ASC 606 and Sales Commissions: What Finance Teams Need to Know

Most sales teams don't think about how their commission expense appears on the income statement. That's finance's job. But how commissions are paid and tracked directly affects whether finance can comply with ASC 340-40—the FASB standard that governs commission accounting for companies reporting under US GAAP.

This post covers how the standard works in practice, where companies make mistakes in applying it, and what data you need to do it right.

How ASC 340-40 fits into the ASC 606 framework

ASC 606 (Revenue from Contracts with Customers) changed how companies recognize revenue. Its companion standard, ASC 340-40 (Other Assets and Deferred Costs — Contracts with Customers), extended that logic to the costs of obtaining contracts.

The underlying principle: if you defer revenue recognition because performance obligations haven't been satisfied yet, you should also defer the cost of acquiring that revenue. Commissions paid to close a deal are the primary cost at issue.

Under ASC 340-40-25-1, companies must recognize an asset for the incremental costs of obtaining a contract when they expect to recover those costs. That asset is then amortized over the period the costs are expected to benefit.

The standard applies to all for-profit entities reporting under US GAAP. Public companies adopted for fiscal years beginning after December 15, 2017. After several deferrals — including one related to COVID-19 — private companies were required to adopt for fiscal years beginning after December 15, 2021. Calendar-year private companies that hadn't adopted by FY2022 were out of compliance.

What qualifies as an incremental cost

An incremental cost is any cost the entity would not have incurred if the contract had not been obtained.

This is a strict definition. Commission paid only upon deal close — where a rep receives $0 if the deal doesn't close — is the clearest qualifying example. The commission is conditional on the outcome, making it incremental.

The following typically do not qualify:

• Base salary (paid regardless of any specific deal closing)
• Pre-sale travel or demo costs (incurred during the sales process, not conditional on the outcome)
• Sales manager salaries and overhead
• Legal fees for contract review (incurred during negotiation regardless of outcome)

If a rep receives a bonus that's partially tied to deal close rates but also paid for other performance metrics, that bonus requires allocation. The incremental portion qualifies; the rest does not. Companies should document their analysis and align with auditors before the first reporting period.

The amortization period: where most companies struggle

Identifying which commissions to capitalize is relatively straightforward. Determining the right amortization period is where meaningful judgment enters.

The period must reflect how long the capitalized cost is expected to benefit the company. This is not simply the initial contract term.

According to the KPMG Revenue for Software and SaaS Handbook (February 2025), companies must consider anticipated renewals when the commission was intended to benefit the full customer relationship — not just the initial contract. PwC's Viewpoint guidance takes the same position: the amortization period may extend well beyond the stated contract term for SaaS businesses with high retention rates.

In practice, for a SaaS company that sells one-year contracts with historical retention rates above 80%, the appropriate amortization period is the estimated customer lifetime — often 3 to 5 years, not 12 months.

The commensurate test

There is one exception: if renewal commissions are commensurate with initial commissions, companies may amortize initial commissions over just the initial contract term.

"Commensurate" was clarified by the FASB Transition Resource Group in November 2016 and codified in ASU 2014-09 Basis for Conclusions paragraph BC309. The test is value-based: if the commission rate relative to contract value is proportionally equivalent between new contracts and renewals, the renewal commission is commensurate with the initial commission.

For example: a company pays 8% commission on new contracts and 8% on renewal contracts of equal value. Each commission can be amortized over its own contract term. No extension needed.

If the same company pays 8% on new contracts and 2% on renewals, the initial commission was not meant to benefit just the initial term — it was intended to benefit the relationship including those low-cost renewals. The initial commission must be amortized over the expected customer lifetime.

The documentation burden here is real. Finance teams need to document:

• Initial commission rate
• Renewal commission rate (if different)
• Basis for determining the commissions are or are not commensurate
• Supporting data: historical renewal rates, average customer lifetime, how you derived the amortization period

Auditors will ask for all of it.

The practical expedient

Companies may elect to expense incremental contract costs immediately when the amortization period of the asset would be one year or less. This is the practical expedient in ASC 340-40-25-4.

Three conditions govern its use:

1. It is a policy election, not a deal-by-deal decision
2. It must be applied consistently to all contracts with similar characteristics
3. It must be disclosed in financial statements

Companies that sell short-term contracts with expected customer relationships under one year can use the expedient. Most SaaS companies with multi-year expected customer relationships cannot — even if they sell month-to-month or annual contracts — because the amortization period of the capitalized asset would exceed one year.

When assessing whether the expedient is available, the question is not "how long is the contract" but "how long would we amortize this asset?" If historical retention data shows customers stay for an average of 4 years, the amortization period is approximately 4 years, regardless of the stated contract length.

Required disclosures under ASC 340-40-50

Companies subject to the standard must disclose the following in their financial statements:

Balance sheet: The closing balance of the capitalized contract cost asset. This typically appears as "Deferred commission expense" or "Contract acquisition costs" on the face of the balance sheet or in the notes, classified as current or non-current depending on when amortization is expected.

Income statement: The amortization recognized in the reporting period, typically reported within sales and marketing expense.

Impairment: Any impairment losses recognized — the amount, the reason for impairment, and the method used to determine it. A customer cancellation before the asset is fully amortized triggers impairment of the unamortized balance.

Methodology note: The footnotes must explain the judgment used to identify incremental costs, the method for determining the amortization period, and the rationale for the chosen period.

Practical expedient disclosure: If the company has elected the practical expedient, that election and its basis must be stated.

A note on impairment: when a customer churns mid-contract, the unamortized commission balance must be written off immediately. If the company has a clawback policy that recovers some of the commission from the rep, that recovery partially offsets the write-off. Finance needs visibility into both the original commission amount and the churn event to record both entries correctly.

What data finance actually needs

The standard lives in accounting, but the data it requires comes from commission operations. For each deal, finance needs:

• Commission amount paid and payment date
• Contract start date and initial contract term
• Rep and territory (for audit trail)
• Renewal commission rate (to assess commensurate standard)
• Churn or modification events and their dates

If commission payouts are tracked in a spreadsheet and deal data lives in the CRM, someone is manually reconciling these every period. Any adjustment — a deal retraction, a clawback, a mid-period rep departure — requires an update in multiple systems.

This is where commission tracking software changes the workflow. Carvd stores commission payouts at the deal level with the close date, contract term, and rep assignment finance needs to maintain amortization schedules. The payout data and the accounting data come from the same source rather than being reconciled after the fact.

For a broader look at what to evaluate in commission tools, see commission tracking software: what to look for (2026 guide).

Common implementation mistakes

Amortizing only over the contract term. The most common error. A company sells one-year contracts with 80% renewal rates and amortizes commissions over 12 months, applying the expedient without confirming the amortization period would actually be one year or less. Auditors have become more focused on this since 2022.

Inconsistent policy election. Using the practical expedient for some contracts and full capitalization for others without a documented policy distinguishing them. The expedient must be applied consistently to contracts with similar characteristics.

No documentation on amortization period. Finance chose 3 years, but there's no supporting analysis — no historical retention data, no written rationale. When auditors ask, the answer "we estimated" is not sufficient.

Missing commensurate analysis. For companies with different initial and renewal commission rates, no documented analysis of whether those rates meet the commensurate standard. This changes whether the amortization period is the contract term or the customer lifetime.

Failing to impair on churn. A customer cancels; no one flags the unamortized commission balance to finance. The asset stays on the books past the point of benefit, which is incorrect under the standard.

Related reading

• Commission accounting: revenue recognition under ASC 606 — overview of ASC 340-40, journal entry examples, and how amortization works
• Commission reporting: what sales ops actually needs — the reports that connect payout data to finance
• Commission errors: the most common mistakes — data integrity issues that affect both payout accuracy and accounting entries
• How to calculate sales commission (formulas and examples) — the calculation mechanics underlying commission payouts