Investment Accounting Training for Staff Accountants: Build ASC 320 and ASC 321 Competence

Last updated: September 9, 2026  |  42-minute read

What Is Investment Accounting Training for Staff Accountants?

Investment accounting training develops a staff accountant’s ability to classify, measure, reconcile, and report investments in debt and equity securities under the accounting model that actually applies.

The first mistake is assuming “investment” is an accounting category.

It is not.

A company can call all of the following “investments”:

• U.S. Treasury notes,
• corporate bonds,
• municipal debt,
• preferred securities,
• public common stock,
• private-company shares,
• convertible instruments,
• a 30% strategic ownership interest,
• a controlled subsidiary,
• a loan to another company,
• a derivative-linked instrument,
• a fund interest measured using NAV.

Those instruments can land in different Topics.

This guide focuses on the two core Topics that cover many ordinary investment portfolios: ASC 320 for debt securities and ASC 321 for equity securities. It connects directly to SkillAbility’s Fair Value Accounting Training for Staff Accountants, CECL Training for Accountants, Statement of Cash Flows Training for Staff Accountants, Equity Accounting Training for Staff Accountants, and Workpaper Review Checklist.

Why Investment Accounting Is a Judgment-Development Topic

I have practiced public accounting since 1990, founded my accounting firm in 1993, and helped grow Howard, Howard and Hodges from three people to approximately 50 staff. Since 2020, I have built SkillAbility around a recurring development problem: staff often learn how to update investment schedules before they learn why one security belongs in earnings, another belongs partly in OCI, and another remains at amortized cost while an allowance changes separately.

A preparer can reconcile the broker statement to the general ledger and still get the accounting wrong by:

• classifying a bond as HTM because management “probably won’t sell it,”
• running an AFS interest-rate-driven unrealized loss through earnings,
• ignoring the separate AFS credit-loss assessment,
• failing to book CECL on an HTM security because its coupon is current,
• posting a public-stock unrealized gain to OCI instead of earnings,
• leaving a private-company equity investment at cost after a new financing round establishes an observable price,
• using an old “other-than-temporary impairment” model for an ASC 321 equity security,
• discounting a publicly traded restricted share solely because the reporting entity signed a lock-up agreement,
• capitalizing transaction costs on an investment measured at fair value through earnings,
• selling an HTM security for liquidity without considering whether the sale calls the remaining HTM portfolio into question,
• missing AOCI recycling when an AFS security is sold, or
• continuing ASC 321 after a purchase creates significant influence.

The market price is only one input.

The accounting conclusion depends on scope + classification + measurement + credit + presentation.

What Is Current in Investment Accounting in 2026?

KPMG released its latest Investments Handbook in August 2026. The guide specifically covers debt securities under ASC 320, equity securities under ASC 321, the fair value option, classification, and a new chapter on imputation of interest. KPMG states that the 2026 edition is effective immediately.

Chart: Where Investment-Accounting Judgment Concentrates

SkillAbility training heat map—not a FASB or SEC risk ranking. Actual complexity depends on instrument terms, portfolio purpose, liquidity needs, credit quality, valuation inputs, restrictions, ownership rights, foreign currency, tax position, and industry-specific guidance.

The MARKET READY Framework

M + A — Scope: Which Accounting Model Owns the Investment?

Before asking whether an investment is trading, AFS, HTM, or fair value through earnings, staff should determine whether ASC 320 or ASC 321 applies at all.

Common routing questions

• Is the instrument a debt security?
• Is it an equity security?
• Does the investor control the issuer under ASC 810?
• Does the investor have significant influence requiring ASC 323?
• Is the instrument a loan/receivable rather than a debt security?
• Does ASC 815 derivative accounting apply?
• Is the reporting entity itself an investment company under ASC 946?
• Does a specialized industry Topic apply?
• Has the fair value option under ASC 825 been elected?

Debt security vs. loan

The fact that both instruments pay principal and interest does not make them interchangeable.

Legal form, transferability, contractual rights, market characteristics, and the Codification definitions matter. Staff should not force a privately negotiated receivable into ASC 320 merely because management calls it a “note investment.”

Equity security vs. equity method

ASC 321 is generally the equity-security model when the investment is not consolidated and the equity method does not apply. If significant influence emerges, ASC 323 can replace ASC 321 from the applicable date.

This is why the portfolio register should include:

• issuer,
• instrument type,
• voting rights,
• ownership percentage,
• board / governance rights,
• convertibility or other embedded features,
• accounting Topic,
• measurement model.

R — ASC 320 Debt Securities: Trading, Available for Sale, or Held to Maturity

HTM is an assertion—not a default bucket

“We don’t plan to sell it right now” is weaker than the required positive intent and ability to hold to maturity.

The file should consider:

• liquidity needs,
• funding plans,
• debt maturities,
• regulatory capital needs,
• historical sales behavior,
• portfolio policy,
• asset-liability management,
• anticipated business combinations or other cash needs.

AFS is not “management might sell someday”

AFS is the residual category for ASC 320 debt securities that are neither trading nor HTM. Staff should document why a security fits the category instead of treating AFS as a vague intention.

K — Initial Measurement and Transaction Costs

Transaction-cost treatment changes with the measurement model.

Internal portfolio-management costs, general diligence, and advisory expenses can follow different treatment from direct incremental transaction costs. Staff should label each cost before deciding whether it belongs in basis.

K — Premium, Discount, and Interest Income

A debt-security schedule needs more than face value and coupon.

Core fields include:

• par amount,
• purchase price,
• capitalized qualifying transaction costs,
• premium or discount,
• coupon rate,
• effective yield,
• maturity,
• call features,
• periodic cash interest,
• premium amortization / discount accretion,
• ending amortized cost.

Worked premium example

Assume a company purchases a $1,000,000 bond for $1,040,000, excluding simplified qualifying costs, and classifies it AFS.

The $40,000 premium is not an immediate loss.

It affects the effective yield and is amortized over the applicable period under ASC 310-20 guidance. The resulting amortized cost becomes the benchmark used in the AFS fair-value and credit-loss analysis.

Callable debt purchased at a premium can have specialized premium-amortization requirements. Staff should not mechanically amortize every premium to contractual maturity.

E — Fair Value and Pricing Controls

ASC 320 trading and AFS securities and most ASC 321 equity securities depend on ASC 820 fair value.

That means the investment workpaper needs to answer:

• What is the unit of account?
• What market is used?
• Is a quoted price directly available?
• Is the price from an exchange, broker, dealer, pricing service, or model?
• What hierarchy level applies?
• Were stale, matrix-priced, or model-derived inputs challenged?
• Does the price reflect an orderly transaction?
• Did the portfolio experience unusual spreads or market dislocation?
• Are contractual restrictions entity-specific or a characteristic of the asset?

For full valuation training, use Fair Value Accounting Training for Staff Accountants.

Pricing service does not eliminate accounting responsibility

A third-party price should be evaluated when:

• multiple pricing sources disagree materially,
• trading volume collapses,
• the security is Level 2 or Level 3,
• the issuer’s credit deteriorates suddenly,
• the security has unusual call, conversion, subordination, or restriction terms,
• there is evidence of a recent transaction at a different price.

T — Trading Debt Securities: Fair Value Through Earnings

Trading debt securities are carried at fair value with unrealized holding gains and losses in current earnings.

Example

Amortized cost before fair-value adjustment: $980,000

Period-end fair value: $1,015,000

Illustrative entry:

Dr. Trading Debt Security / Fair Value Adjustment $35,000
Cr. Unrealized Gain — Earnings $35,000

Because the security is measured at fair value through net income, a separate ASC 326 credit-loss allowance is not layered on top of the fair-value accounting.

T + R — Available-for-Sale Debt Securities: Fair Value, OCI, and Credit

AFS debt securities are carried at fair value.

But a decline below amortized cost has to be separated into:

1. credit-related impairment, and
2. other factors, such as interest-rate or market-spread changes.

The basic AFS structure

ASC 326-30 limits the credit-loss allowance to the amount by which fair value is below amortized cost.

That makes AFS different from HTM.

Worked AFS example

Assume:

• amortized cost = $1,000,000,
• fair value = $920,000,
• total fair-value decline = $80,000,
• supported credit-loss component = $25,000,
• remaining $55,000 decline relates to noncredit factors.

The exact entries depend on the entity’s allowance and AFS rollforward architecture, taxes, and prior balances, but the conceptual split should be visible in the staff workpaper.

Intent to sell changes the model

If the entity intends to sell the impaired AFS security—or it is more likely than not the entity will be required to sell it before recovery of amortized cost—the accounting can require a write-down to fair value through earnings rather than the ordinary allowance split.

R — Held-to-Maturity Debt Securities: Amortized Cost Is Not “Ignore Market Risk”

HTM debt securities are reported at amortized cost because the entity asserts positive intent and ability to hold them to maturity.

That means ordinary market-value changes caused by interest rates are not recorded as unrealized gains/losses.

But HTM still requires:

• interest income / premium-discount accounting,
• ASC 326-20 expected-credit-loss allowance,
• fair-value disclosures when required,
• ongoing intent-and-ability support,
• evaluation of sales or transfers.

HTM is not a way to avoid volatility after the fact

Management cannot wait for market prices to fall and then decide the investment was “really HTM all along.” Classification is established based on the facts and intent at acquisition and must remain supportable.

Sales can taint the assertion

Sales or transfers of HTM securities outside limited permitted circumstances can call into question the entity’s intent to hold the remaining HTM portfolio to maturity.

ASC 320 includes limited situations that can avoid tainting, such as specified significant credit deterioration and certain isolated, nonrecurring, unusual, and not reasonably anticipated events.

R — ASC 326 Credit Losses: HTM and AFS Use Different Models

This is one of the most important connections between investment accounting and CECL Training for Accountants.

HTM example

A bond has amortized cost of $2,000,000.

The company’s CECL analysis estimates lifetime expected credit losses of $18,000.

Illustrative entry:

Dr. Credit Loss Expense $18,000
Cr. Allowance for Credit Losses — HTM $18,000

A fair value of $1.85 million does not automatically mean the $150,000 decline is the CECL amount.

Credit deterioration can also affect HTM classification behavior

If issuer credit deteriorates significantly, a later sale can fall within specified ASC 320 exceptions that do not necessarily taint the remaining HTM portfolio. Staff still need to document why the exception actually applies.

A + E + T — ASC 321 Equity Securities: Fair Value Changes Generally Go to Earnings

For equity securities within ASC 321, the general subsequent-measurement model is straightforward:

Public-stock example

Company owns 10,000 shares of a public company.

• Beginning carrying value = $500,000
• Period-end quoted fair value = $575,000

Unrealized gain:

Do not post the $75,000 to OCI simply because the security is “available to sell.” ASC 321 removed the old ordinary AFS equity-security model for these investments.

Scope exceptions matter

ASC 321 does not override:

• consolidation,
• equity method,
• certain derivative models,
• investment-company accounting,
• other specialized guidance.

E — ASC 321 Measurement Alternative for Equity Securities Without Readily Determinable Fair Value

For a qualifying equity security without a readily determinable fair value that does not qualify for the applicable NAV practical expedient, an entity may elect the ASC 321 measurement alternative.

The election is made investment by investment.

The security must continue to be reassessed for eligibility.

The measurement alternative is not permanent “cost accounting”

Staff must search each reporting period for:

• impairment indicators,
• new financing rounds,
• secondary transactions,
• share issuances,
• repurchases,
• transactions in identical securities,
• transactions in similar securities of the same issuer,
• changes that make fair value readily determinable.

If an observable price change or impairment remeasurement occurs, the resulting measurement is a fair-value measurement under ASC 820.

E — Observable Transactions: “Similar Security” Requires Judgment

A new financing round can create an observable price change.

But the new security may not be identical to the company’s existing investment.

Staff should compare:

• seniority,
• liquidation preference,
• dividend rights,
• conversion rights,
• voting rights,
• redemption features,
• participation rights,
• anti-dilution features,
• other contractual preferences.

Example

Company holds common shares measured under the ASC 321 alternative at $1.0 million.

The issuer completes a Series C preferred financing at a price implying $1.8 million for the same number of shares if the securities were economically identical.

They are not necessarily identical.

The Series C has a 1.5x liquidation preference and downside protection.

Staff should not simply multiply the Series C price by the common-share count.

The observable transaction is evidence, but the common interest may require valuation adjustments to reach the fair value of the investment actually held.

R — ASC 321 Measurement-Alternative Impairment

At each reporting period, the investor qualitatively evaluates whether an equity security measured under the alternative is impaired.

Potential indicators can include:

• significant deterioration in the issuer’s earnings, cash flows, or financial position,
• adverse changes in the issuer’s industry or market,
• adverse regulatory/economic environment,
• concerns about the issuer’s ability to continue as a going concern,
• significant deterioration in credit rating or capital raising ability where relevant,
• offers or transactions indicating a lower value.

If the qualitative assessment indicates impairment, the security is remeasured to fair value and the impairment loss is recognized in earnings.

Do not use the old OTTI model

ASC 321’s measurement-alternative impairment is not the legacy “other than temporary” test used historically for many equity securities.

Staff should use the current one-step qualitative-trigger-to-fair-value model.

E — Contractual Sale Restrictions: Current GAAP and the 2026 Standards Watch

Restricted equity securities are a particularly current investment-accounting topic.

Current broad ASC 820 principle under ASU 2022-03

ASU 2022-03 clarified that a contractual restriction on the sale of an equity security is generally an entity-specific restriction rather than a characteristic of the equity security itself.

As a result, the contractual sale restriction generally is not reflected as a discount in measuring the fair value of the security.

The ASU also added disclosures including:

• fair value of equity securities subject to contractual sale restrictions,
• nature and remaining duration of the restrictions,
• circumstances that could cause the restriction to lapse.

2026 FASB investment-company proposal

On July 1, 2026, FASB issued a proposed ASU that would create an exception for investment companies holding equity securities subject to contractual sale restrictions. The proposal would require a qualifying investment company to consider the restriction in fair value and disclose the related discount.

This is narrow.

A — Sales, Realized Gains/Losses, AOCI Recycling, and Transfers

Trading debt securities

Because changes in fair value have already run through earnings, sale accounting removes the security and recognizes the remaining difference between proceeds and carrying value in earnings.

AFS debt securities

When an AFS security is sold, the related accumulated unrealized gain or loss in AOCI is reclassified to earnings as part of the sale accounting.

Staff should reconcile:

• proceeds,
• amortized cost,
• fair-value carrying amount,
• AOCI amount,
• credit allowance,
• realized gain/loss.

HTM securities

Before recording a sale, ask:

• Why was the security sold?
• Does an ASC 320 permitted circumstance apply?
• Does the sale call intent for other HTM securities into question?
• Does the portfolio need reclassification?
• Were audit committee / treasury / investment policy implications considered?

Transfers between ASC 320 categories

Transfers can change measurement and OCI/earnings treatment. Transfers into or out of trading should be rare. Transfers involving HTM deserve technical review because they can affect the credibility of the positive-intent assertion.

A — Crossing Into or Out of the Equity Method

ASC 321 and ASC 323 interact when ownership or influence changes.

ASC 321 → ASC 323

An investor may buy additional shares or gain governance rights that create significant influence.

ASU 2020-01 clarified that observable transactions causing an investor to begin applying the equity method are considered for purposes of applying the ASC 321 measurement alternative immediately before the transition.

ASC 323 → ASC 321

If significant influence is lost, the retained equity security moves to ASC 321 as applicable. An observable transaction that causes the discontinuation of the equity method can be relevant to remeasurement under the ASC 321 alternative.

D — Foreign-Currency Debt and Equity Investments

Foreign currency adds another layer to investment accounting.

Equity securities at recurring fair value

For an ASC 321 equity security measured at fair value, changes in fair value—including the effect of exchange-rate changes reflected in the fair value—flow through earnings.

Measurement-alternative equity securities

A foreign-currency-denominated equity security using the ASC 321 measurement alternative generally retains historical-currency mechanics until a remeasurement event occurs. When an impairment or observable transaction triggers fair-value remeasurement, current exchange rates become part of the resulting fair value measurement.

Debt securities

Foreign-currency debt securities require careful coordination of ASC 320, ASC 830, and the applicable fair-value/OCI model. Do not assume the foreign-exchange component automatically follows the same presentation as the market-rate component.

D — Statement of Cash Flows and Tax Coordination

Cash flows

Purchases and sales of investments often appear in investing activities.

But ASC 230 contains a specific principle for trading debt securities and equity securities: cash receipts and payments are presented consistently with the nature and purpose for which the securities were acquired.

That means classification should not be copied automatically from a generic “investment = investing” rule.

See Statement of Cash Flows Training for Staff Accountants.

Income taxes

Book unrealized gains/losses, OCI, allowances, basis adjustments, and realized gains can create tax consequences that do not follow the same recognition timing as book accounting.

Coordinate:

• tax basis,
• deferred taxes on AOCI,
• unrealized book gains/losses,
• capital loss limitations,
• worthless-security rules,
• foreign withholding/tax credits,
• state tax treatment.

Worked ASC 320 Example: Same Bond, Three Different Accounting Outcomes

Assume Company A buys a corporate bond for $1,000,000 amortized-cost basis for this simplified example.

At quarter-end:

• fair value = $940,000,
• market decline = $60,000,
• credit analysis indicates $12,000 of expected credit loss under the relevant model,
• remaining decline primarily reflects market interest rates / spread factors.

If classified trading

Fair value through earnings:

No separate $12,000 ASC 326 allowance is layered on.

If classified AFS

Illustratively, assuming the ordinary ASC 326-30 allowance model applies and the entity does not intend/expect to be required to sell before recovery:

The security remains presented at $940,000 fair value.

If classified HTM

The $60,000 fair-value decline does not itself change the amortized-cost carrying amount.

The investor recognizes the appropriate ASC 326-20 allowance based on expected credit losses—assume $12,000 in this simplified case.

Training lesson

Worked ASC 321 Example: Private Equity With an Observable Financing Round

Assume Company B invested $800,000 in common shares of a private software company.

The shares do not have a readily determinable fair value, and Company B elected the ASC 321 measurement alternative.

Year 1

No observable transactions and no impairment indicators.

Carrying amount remains $800,000.

Year 2 financing round

The issuer sells preferred shares to new investors in an orderly transaction.

The new preferred shares have:

• liquidation preference,
• conversion rights,
• downside protection not held by Company B’s common shares.

A valuation analysis concludes that after adjusting the financing-round price for those rights, the fair value of Company B’s common investment is $1,150,000.

New carrying amount: $1,150,000.

Year 3 impairment

The issuer loses its principal customer and cannot complete a planned financing.

Qualitative indicators show impairment.

Fair value is estimated at $700,000.

New carrying amount: $700,000.

Training lesson

The measurement alternative did not mean “leave the investment at $800,000 until sold.” Staff had to monitor observable financing and impairment events each reporting period.

Monthly / Quarterly Investment Accounting Workflow

Build one controlled investment register

Suggested fields:

• Issuer
• CUSIP / security ID
• Instrument type
• Debt vs equity
• Accounting Topic
• ASC 320 category if debt
• ASC 321 measurement alternative elected?
• Fair value option elected?
• Ownership percentage / governance rights
• Trade date
• Settlement date
• Par / shares
• Purchase price
• Transaction costs
• Premium / discount
• Coupon / effective yield
• Maturity / call date
• Beginning amortized cost
• Interest income
• Ending amortized cost
• Fair value
• Pricing source
• ASC 820 hierarchy level
• Unrealized gain/loss
• Earnings amount
• OCI amount
• AOCI balance
• Credit-loss allowance
• Impairment flag
• Observable transaction flag
• Restriction flag / disclosure
• Sale / transfer activity
• Realized gain/loss
• FX impact
• Tax basis / DTA/DTL flag
• Cash-flow classification
• Reviewer

Investment Accounting Self-Review Checklist Before Manager Review

• Did I reconcile the complete investment population to custody/broker/private-investment records?
• Did I identify every new security acquired during the period?
• Did I identify every sale, maturity, call, conversion, or transfer?
• Did I determine whether each instrument is debt or equity for accounting scope?
• Did I identify loans/receivables that are not ASC 320 debt securities?
• Did I identify instruments potentially within ASC 815?
• Did I identify controlled entities requiring ASC 810?
• Did I identify significant-influence investments potentially requiring ASC 323?
• Did I identify whether ASC 946 investment-company guidance applies to the reporting entity?
• Did I document the accounting Topic for each material investment?
• For each ASC 320 debt security, did I document trading, AFS, or HTM classification?
• For HTM, did I support positive intent to hold to maturity?
• For HTM, did I support ability to hold to maturity?
• Did I consider current/future liquidity needs when supporting HTM?
• Did I compare HTM classification with historical sale behavior?
• Did I identify any HTM sale or transfer?
• If an HTM security was sold/transferred, did I document why?
• Did I determine whether an ASC 320 permitted circumstance applies?
• Did I evaluate potential tainting of the remaining HTM portfolio?
• Did I identify rare transfers into/out of trading?
• Did I trace purchase price to trade confirmation?
• Did I classify direct incremental acquisition costs correctly?
• Did I expense transaction costs for investments measured at recurring FV through earnings when required?
• Did I capitalize qualifying AFS/HTM transaction costs?
• Did I include qualifying transaction costs in initial ASC 321 measurement-alternative basis?
• Did I identify face/par amount?
• Did I identify premium or discount?
• Did I calculate effective interest income?
• Did I reconcile cash coupon to bank/custodian support?
• Did I update premium amortization / discount accretion?
• Did I identify callable debt requiring specialized premium treatment?
• Did I reconcile ending amortized cost?
• Did I obtain a period-end fair value where required?
• Did I document the pricing source?
• Did I identify Level 1, Level 2, or Level 3 hierarchy classification?
• Did I investigate stale or outlier prices?
• Did I compare multiple pricing sources where appropriate?
• Did I challenge pricing-service data for unusual securities?
• Did I avoid adjusting fair value for transaction costs?
• For trading debt, did I record the full fair-value change in earnings?
• Did I avoid creating a separate ASC 326 allowance for trading debt measured at FV through earnings?
• For AFS debt, did I compare fair value with amortized cost at the individual security level?
• Did I evaluate whether any AFS decline includes a credit component?
• Did I record the AFS credit component through an allowance/earnings when appropriate?
• Did I route the remaining noncredit AFS decline to OCI when appropriate?
• Did I respect the AFS allowance cap based on the fair-value shortfall?
• Did I evaluate intent to sell an impaired AFS security?
• Did I evaluate whether it is more likely than not the entity will be required to sell before recovery?
• For HTM debt, did I perform the ASC 326-20 expected-credit-loss assessment?
• Did I avoid treating fair-value decline as the HTM CECL amount automatically?
• Did I reconcile HTM allowance changes to credit-loss expense?
• For public equity securities under ASC 321, did I record fair-value changes in earnings?
• Did I avoid putting ordinary ASC 321 public-equity unrealized gains/losses in OCI?
• For private equity, did I determine whether fair value is readily determinable?
• Did I confirm the investment is eligible for the ASC 321 measurement alternative?
• Did I document the measurement-alternative election by investment?
• Did I reassess eligibility each reporting period?
• Did I search for observable transactions during the period?
• Did I search for new financing rounds?
• Did I search for secondary transactions and issuer repurchases?
• For a similar-security transaction, did I compare liquidation rights?
• Did I compare voting rights?
• Did I compare conversion and redemption rights?
• Did I compare dividend and participation rights?
• Did I adjust the observed price when material differences in rights require valuation judgment?
• Did I treat the resulting observable-transaction remeasurement as an ASC 820 fair-value measurement?
• Did I perform the ASC 321 qualitative impairment assessment each reporting period?
• Did I identify issuer operating losses or liquidity deterioration?
• Did I identify adverse industry/regulatory developments?
• Did I identify going-concern or capital-raising problems at the issuer?
• If impaired, did I remeasure the ASC 321 investment to fair value?
• Did I recognize ASC 321 impairment in earnings?
• Did I avoid using a legacy OTTI test for ASC 321?
• For restricted equity securities, did I identify whether the restriction is contractual/entity-specific?
• Did I apply current ASU 2022-03 fair-value guidance?
• Did I capture required sale-restriction disclosures?
• Did I avoid applying the 2026 proposed investment-company exception to ordinary entities?
• Did I identify any sale of an AFS security?
• Did I recycle related AOCI to earnings on sale?
• Did I calculate realized gain/loss from supportable carrying amounts and proceeds?
• Did I identify any ownership change that could create significant influence?
• Did I identify any loss of significant influence moving an investment back into ASC 321?
• Did I consider observable transactions associated with the ASC 321/323 transition?
• Did I identify foreign-currency denominated investments?
• Did I apply the correct ASC 830 interaction?
• Did I reconcile cash receipts and payments to the statement-of-cash-flows classification?
• Did I consider the nature/purpose rule for trading debt and equity securities?
• Did I coordinate book/tax basis and deferred taxes?
• Did I reconcile investment income to the income statement?
• Did I reconcile OCI/AOCI to the statement of comprehensive income and equity?
• Did I reconcile credit allowances to the balance sheet and note disclosures?
• Did I reconcile fair-value hierarchy disclosures?
• Did I capture ASC 321 measurement-alternative disclosures?
• Did I capture AFS credit-loss disclosures where applicable?
• Did I investigate large unrealized movements?
• Did I document open pricing or credit questions before submitting for review?
• Can another accountant reconstruct each material security from trade confirmation through ending carrying amount and financial-statement presentation?

100-Point Investment Accounting Readiness Scorecard

Suggested readiness bands

• 90–100: Ready to own recurring investment-accounting workstreams with normal manager/technical review.
• 82–89: Generally review-ready; targeted coaching remains in credit losses, private-equity valuation, or HTM transfers.
• 72–81: Controlled ownership with checkpoints before classification, fair-value exceptions, and impairment conclusions.
• Below 72: Continue structured ASC 320/321 practice before independent preparation.

Override the numerical score for knowingly misclassifying securities to manage earnings/OCI, unsupported HTM assertions, hiding an observable private-equity transaction, manipulating a pricing input, omitting a known credit issue, ignoring a sale that taints HTM intent, or intentionally avoiding required fair-value/impairment recognition.

A 30/60/90-Day Investment Accounting Training Plan

15 Realistic Investment Accounting Training Scenarios

1. Corporate bond acquired for liquidity reserve

Staff evaluates trading/AFS/HTM based on documented intent and ability rather than assuming “investment-grade bond = HTM.”

2. HTM bond drops 12% when interest rates rise

Staff does not book the market decline as an unrealized loss but separately performs ASC 326-20 credit-loss analysis.

3. AFS bond falls below amortized cost

Staff separates credit from noncredit decline and routes amounts to earnings/allowance versus OCI.

4. Management decides to sell an impaired AFS bond

Staff identifies the intent-to-sell consequence rather than continuing the ordinary allowance model.

5. Trading bond has issuer credit deterioration

Staff recognizes fair value through earnings and does not layer a separate ASC 326 allowance onto the security.

6. Company buys public common stock

Staff records subsequent fair-value changes in earnings, not OCI.

7. Private equity stays at cost for two years

Staff verifies there truly were no observable transactions or impairment indicators instead of simply carrying cost forward.

8. New preferred financing round occurs

Staff compares the rights of the new preferred shares with the common investment and adjusts the observable price when required.

9. Private issuer loses major customer

Staff performs ASC 321 qualitative impairment and remeasures to fair value if impaired.

10. Restricted public shares are subject to a lock-up

Staff applies current ASU 2022-03 guidance and does not automatically create a discount solely for an entity-specific contractual sale restriction.

11. Investment company holds locked-up shares

Staff flags the 2026 FASB standards project and confirms whether final guidance has been issued/effective before changing current accounting.

12. Company sells an AFS bond

Staff recycles related AOCI and reconciles the realized gain/loss to proceeds and carrying amount.

13. Company sells an HTM bond to fund payroll

Staff escalates the sale because liquidity-driven disposal can call the remaining HTM intent assertion into question unless a permitted exception applies.

14. Company increases private-company ownership from 12% to 28% and gains a board seat

Staff evaluates ASC 321-to-ASC 323 transition rather than continuing the measurement alternative.

15. Foreign-currency equity investment appreciates while currency weakens

Staff applies the ASC 321/ASC 830 interaction rather than separating FX mechanically into OCI.

What CPA Firms Should Measure

Connect these measures to the Workpaper Review Checklist and the firm’s staff competency framework.

Common Investment Accounting Training Mistakes

Mistake 1: Treat every investment as a fair-value asset

HTM, equity method, loans, and specialized investments can use different models.

Mistake 2: Treat HTM as “probably won’t sell”

The positive intent and ability assertion is not documented.

Mistake 3: Put all AFS unrealized losses in OCI

The required ASC 326-30 credit-loss analysis is skipped.

Mistake 4: Use fair-value decline as HTM CECL

Market-rate decline is confused with expected credit loss.

Mistake 5: Put public equity gains/losses in OCI

The current ASC 321 fair-value-through-earnings model is ignored.

Mistake 6: Treat private-equity measurement alternative as permanent cost

Observable transactions and impairment indicators are not monitored.

Mistake 7: Copy a preferred financing price directly to common stock

Differences in rights and preferences are ignored.

Mistake 8: Use legacy OTTI for ASC 321 private equity

The current qualitative impairment-to-fair-value model is missed.

Mistake 9: Discount restricted shares automatically

ASU 2022-03’s entity-specific contractual restriction principle is ignored.

Mistake 10: Treat a proposed 2026 investment-company exception as broad GAAP

A narrow pending project is applied outside its scope before final guidance exists.

Mistake 11: Sell HTM for liquidity without evaluating tainting

The sale entry is correct but the portfolio accounting assertion is not.

Mistake 12: Reconcile market value without reconciling income, OCI, allowance, and AOCI

The investment balance ties while financial statement presentation remains wrong.

How SkillAbility Builds Investment Accounting Capability

BASE — Scope, classification, and recurring mechanics

• debt vs equity scope
• trading / AFS / HTM
• transaction costs
• premium/discount
• interest income
• public equity FV through earnings
• basic portfolio rollforward

MAPS — Fair value, OCI, and credit judgment

• ASC 820 pricing hierarchy
• pricing-service challenge
• AFS credit vs noncredit
• HTM CECL
• AOCI
• realized gains/losses
• foreign-currency interaction

SUMMIT — Private equity and portfolio-risk readiness

• ASC 321 measurement alternative
• observable financing rounds
• similar-security valuation
• ASC 321 impairment
• contractual sale restrictions
• HTM sales / tainting
• ASC 321/323 ownership transitions
• standards monitoring
• coaching staff without rebuilding the portfolio

Frequently Asked Questions About Investment Accounting Training

What is ASC 320?

ASC 320 is the U.S. GAAP Topic governing many investments in debt securities. Debt securities are classified as trading, available for sale, or held to maturity, with different subsequent measurement and presentation.

What is ASC 321?

ASC 321 is the U.S. GAAP Topic governing many equity securities that are not consolidated, accounted for under the equity method, or subject to another specialized model.

What are the three ASC 320 debt-security categories?

Trading, available for sale, and held to maturity.

How are trading debt securities measured?

Trading debt securities are measured at fair value with unrealized holding gains and losses recognized in earnings.

How are available-for-sale debt securities measured?

AFS debt securities are presented at fair value. Noncredit unrealized changes generally flow through OCI, while credit losses are evaluated under ASC 326-30 and can be recognized through an allowance and earnings.

How are held-to-maturity securities measured?

HTM debt securities are measured at amortized cost, subject to an allowance for expected credit losses under ASC 326-20.

What is required for held-to-maturity classification?

The investor must have the positive intent and ability to hold the debt security to maturity. The assertion should be supportable in light of liquidity needs, portfolio policy, historical sales, and other facts.

Does a decline in HTM fair value create an accounting loss?

Not merely because market value falls. HTM debt is measured at amortized cost, but the investor separately evaluates expected credit losses under ASC 326-20.

Can selling an HTM security affect the rest of the portfolio?

Yes. A sale or transfer outside limited ASC 320 circumstances can call into question the entity’s intent to hold other securities to maturity and can require broader reclassification analysis.

How do AFS credit losses differ from HTM CECL?

HTM uses the ASC 326-20 expected-credit-loss model for amortized-cost assets. AFS uses the separate ASC 326-30 security-level model, with the credit-loss allowance limited by the amount fair value is below amortized cost.

How are equity securities accounted for under ASC 321?

Equity securities within ASC 321 are generally measured at fair value with changes in fair value recognized in net income, unless a qualifying measurement alternative is elected or another accounting model applies.

What is the ASC 321 measurement alternative?

For a qualifying equity security without a readily determinable fair value, an investor may elect to measure the investment at cost less impairment, plus or minus observable price changes in orderly transactions for an identical or similar security of the same issuer.

Is the ASC 321 measurement alternative the same as cost accounting?

No. The investor must monitor observable transactions and impairment each reporting period, and remeasurement events are fair-value measurements under ASC 820.

What is an observable price change under ASC 321?

It is a price change from an orderly transaction involving the identical investment or a similar investment of the same issuer. When the security is only similar, differences in rights and preferences may require valuation adjustments.

How is an ASC 321 measurement-alternative investment tested for impairment?

At each reporting period the investor performs a qualitative assessment. If impairment exists, the investment is written down to fair value through earnings.

Does ASC 321 use the old other-than-temporary impairment model?

No. The current measurement-alternative impairment model uses a qualitative assessment followed by fair-value remeasurement when impaired.

Do contractual sale restrictions reduce fair value?

Under the broad current principle clarified by ASU 2022-03, an entity-specific contractual sale restriction generally is not incorporated into the fair value of the equity security itself. Specialized transition and investment-company considerations can apply.

What is FASB considering for investment companies in 2026?

FASB issued a July 2026 proposal for qualifying investment companies holding equity securities subject to contractual sale restrictions. The proposal would create a targeted exception requiring the restriction to be considered in fair value. Verify whether a final ASU has been issued and is effective before applying it.

When does an ASC 321 investment move to ASC 323?

When changes in ownership, governance rights, or other facts create significant influence under ASC 323, subject to the applicable scope analysis. The transition can require remeasurement considerations under ASC 321 immediately before equity-method accounting begins.

Are investment purchases and sales always investing cash flows?

No. ASC 230 contains special guidance for trading debt securities and equity securities based on the nature and purpose for which the securities were acquired. The cash-flow conclusion should be documented rather than assumed.

How do you know when a staff accountant is review-ready for ASC 320 and ASC 321?

Review-ready staff can route each instrument to the correct model, defend debt classification, build amortized cost, evaluate fair value, separate AFS credit from OCI, apply HTM CECL, account for equity securities and the measurement alternative, identify sales and ownership transitions, and reconcile the portfolio through earnings, OCI, allowances, cash flows, and disclosures.

Current Research and Authority Resources

• KPMG — Investments Handbook, August 2026
• SkillAbility — Fair Value Accounting Training for Staff Accountants
• SkillAbility — CECL Training for Accountants
• Deloitte DART — ASC 326-30 AFS Debt Security Impairment
• Deloitte DART — ASC 321 Measurement Alternative and ASC 820
• FASB — ASU 2022-03, Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions
• FASB — 2026 Investment Companies—Contractual Sale Restrictions Project
• FASB — ASU 2020-01, Interactions Between ASC 321, ASC 323, and ASC 815
• Google Search Central — AI Features and Your Website
• Google Search Central — Optimizing for Generative AI Features

Investment accounting can intersect with ASC 310-20, ASC 320, ASC 321, ASC 323, ASC 326, ASC 815, ASC 820, ASC 825, ASC 830, ASC 230, ASC 740, ASC 946, ASC 810, tax law, securities-law requirements, broker/custodian data, and valuation guidance. Verify current authoritative guidance, instrument terms, and entity-specific facts for live work.

The Bottom Line

Investment accounting training should not produce staff who only know how to import a brokerage statement.

It should produce accountants who can explain why the security has the carrying amount, earnings effect, OCI effect, allowance, and disclosure it has.

Map the instrument before choosing the accounting model.

Separate debt securities from equity securities.

Classify ASC 320 debt as trading, AFS, or HTM before measuring it.

Treat HTM as a positive intent-and-ability assertion.

Build amortized cost before comparing fair value.

Use ASC 820 pricing evidence rather than accepting a black-box number.

Keep trading fair-value changes in earnings.

Separate AFS credit losses from noncredit OCI.

Apply CECL to HTM rather than ignoring credit because the security is not marked to market.

Put ordinary ASC 321 equity fair-value changes in earnings.

Do not let the private-equity measurement alternative become permanent stale cost.

Search for observable transactions and impairment every reporting period.

Apply current sale-restriction guidance and keep pending investment-company proposals in a standards-watch lane.

Escalate HTM sales and ASC 321/323 transitions before the entry is posted.

Reconcile investment balances through earnings, OCI, allowances, cash flows, taxes, and disclosures.

That is MARKET READY.

Protect Knowledge. Develop People. Scale the Firm.

To staff who can explain the portfolio before review has to reverse-engineer it,

Vincent Howard, CPA
Managing Partner, Howard, Howard and Hodges
SkillAbility for Accounting Firms

© 2026 SkillAbility for Accounting Firms. This article provides general educational information and does not replace client-specific U.S. GAAP, audit, legal, tax, valuation, investment, securities-law, SEC, broker-dealer, investment-company, or financial-reporting advice.