Who this is for
- US software-as-a-service corporations whose customers prepay annual or multi-year plans
- Startups preparing monthly financials or a data room for investors
- Corporations whose taxable income does not match book revenue
Not covered here
- Detailed revenue-standard analysis of bundled contracts, usage fees or contract changes
- How to file Form 3115 to start deferring or to switch from cash to accrual
- Sales tax on subscriptions
- Audits or reviews of financial statements
Is a prepaid annual SaaS plan revenue when the cash arrives?
No, not on accrual books. When a customer prepays a SaaS plan, the company owes a year (or more) of service, so the cash is first booked as a liability called deferred revenue. Each month of service moves one month's share from deferred revenue to revenue. Investors call the book rule ASC 606, the US revenue standard.
Tax follows its own rules. A cash-method corporation is taxed when it receives the money, and an accrual-method corporation can defer the unearned part only to the next tax year (26 USC 451(c); Publication 538). So book revenue and taxable income often differ in the year of a large prepayment.
A case is not simple when:
- a customer prepays more than one year, so the books spread the money over the full term but tax does not;
- the company has audited financial statements, which change how the tax deferral is measured;
- the return uses the cash method while the books are accrual;
- one invoice bundles the subscription with setup, training or custom work that may be earned at a different time;
- the company is being acquired, which can pull deferred amounts into an earlier tax year.
A common trap: a bank feed books every customer payment straight to revenue. A prepaid annual plan then shows twelve months of revenue in the month it was paid, and the balance sheet shows no deferred revenue at all.
Gather each contract's start and end dates, the invoices, refund and cancellation terms, and a billing-system export of every subscription.
How do we book deferred revenue each month?
Book the cash to deferred revenue when it arrives, then move one period's share to revenue at each month-end. The entries are the same under any accounting system:
| Event | Debit | Credit |
|---|---|---|
| Customer pays a plan in advance | Cash | Deferred revenue |
| Each month of service given | Deferred revenue | Subscription revenue |
| Invoice issued that the customer is bound to pay, before payment | Accounts receivable | Deferred revenue |
| That invoice is paid | Cash | Accounts receivable |
| Unused part refunded or owed back | Deferred revenue | Refund owed (then cash) |
At month-end, the deferred revenue balance on the balance sheet should equal the total of the schedule below. If it does not, the difference is usually a payment posted straight to revenue or a contract missing from the schedule.
What is a deferred revenue schedule, and why do investors ask for it?
A deferred revenue schedule (often called a waterfall) lists every prepaid contract and shows how much is earned each month and how much is still owed in service. It is the proof behind both the revenue line and the deferred revenue liability.
Each row is one contract: customer, start date, end date, amount billed, monthly amount, and the unearned balance at each month-end. A summary rolls forward: opening deferred revenue, plus new billings, minus revenue earned, minus refunds, equals closing deferred revenue.
Investors ask for it because it lets them check that revenue is earned as service is given rather than when cash comes in, and see how much revenue is already contracted for future months. It also ties billings, cash and revenue together in one place. What goes in the monthly board package is covered in monthly financials for investors and the board.
How do multi-year deals, mid-month starts and refunds fit the schedule?
All three use the same row; only the dates and amounts change.
- Multi-year prepayment: spread the full amount over the full term, month by month, even across several fiscal years. The part to be earned within the next twelve months is often shown as current deferred revenue and the rest as noncurrent.
- Mid-month start: choose one convention, such as a daily proration or treating any start in the first half of a month as a full month, and use it for every contract. Write it into the revenue policy.
- Refund or cancellation: revenue already earned for past months stays revenue. The unearned balance leaves deferred revenue and becomes a refund owed until it is paid. Past months are not restated as negative revenue.
- Upgrade or renewal: treat the new amount from its own start date; add a row rather than rewriting the old one, so the history stays traceable.
How a refund or an expired credit changes taxable income is covered in customer prepayments and deposits.
An invoice is sent but unpaid: is that deferred revenue or a receivable?
On the books, it depends on whether the customer is already bound to pay. If the contract is signed and the customer cannot cancel without paying, the usual entry is accounts receivable on one side and deferred revenue on the other. If the customer can still walk away without paying, many companies leave the invoice off the balance sheet until it is due or paid. Either way, an unpaid invoice is not revenue until the service is given. Write the chosen rule into the revenue policy so it is applied the same way every month.
For tax, timing turns on the method. A cash-method corporation includes income when it is actually or constructively received (Publication 538). For an accrual-method corporation, an amount counts as received once it is due and payable, even if unpaid (26 CFR 1.451-8(a)(14)), so a past-due annual invoice can start the one-year deferral clock before any cash arrives.
Is ARR the same as revenue in the books?
No. Annual recurring revenue (ARR) is an operating metric: the yearly value of subscriptions in force on a given day. Revenue in the books is what was actually earned in the period as service was given. Neither accounting standards nor tax law define ARR, so each company sets its own definition.
The two differ because ARR annualizes today's contracts, usually leaves out one-time setup and service fees, and ignores when the cash came in or when service started. A company that signs a large annual plan on the last day of a quarter adds the full yearly amount to ARR that day but earns almost no revenue from it in that quarter. State the ARR definition in writing and reconcile it to the deferred revenue schedule. Tying deck ARR to the books in a data room is covered in financial records investors ask for in due diligence.
Is deferred revenue taxable? Why taxable income differs from book revenue
Deferred revenue is taxable sooner than the books recognize it in three common cases: the return uses the cash method, an accrual return does not use the deferral method, or a prepayment covers more than the rest of this year and next year. The tax treatment depends on the return's method and on whether the company has an applicable financial statement.
| Return | When a prepayment is taxed |
|---|---|
| Cash method | All of it in the year received (Publication 538) |
| Accrual, no deferral election | All of it in the year received (26 USC 451(c)(1)(A)) |
| Accrual, deferral, no applicable financial statement | The part earned this year; the rest next year (26 CFR 1.451-8(d)) |
| Accrual, deferral, with an applicable financial statement | The part shown as revenue in that statement this year; the rest next year (26 CFR 1.451-8(c)) |
- Next year is the limit. Under the deferral method, whatever is not taxed in the year received is taxed in the following tax year, even if the contract runs three years (26 USC 451(c)(1)(B); Publication 538).
- Cash method eligibility. A C corporation can generally use the cash method only while its average annual gross receipts stay at or under $32,000,000; see switching from cash to accrual accounting.
- Applicable financial statement. For a private startup this usually means audited financial statements, its own or a parent's that include its results (26 USC 451(b)(5)), used for credit, for reporting to shareholders, or for another substantial non-tax purpose (26 CFR 1.451-3(a)(5)). Unaudited monthly statements are not one. With an applicable financial statement, income is taxed no later than it is booked as revenue there (26 USC 451(b)), and changing how that statement recognizes revenue can itself be a tax method change (26 CFR 1.451-8(g)(2)).
- Starting the deferral. A company adopts it by filing a return that uses it, or with Form 3115 if that changes an existing method, and keeps it unless the IRS consents to revoke it (26 CFR 1.451-8(g)(1); 26 USC 451(c)(2)(B)); see customer prepayments and deposits.
- Acquisitions. If the company ceases to exist, or its obligation to serve the customers ends (for example, the contracts are sold with the business), in a transaction not covered by section 381(a) (most tax-free mergers are covered), all deferred amounts not yet taxed are taxed in that year (26 CFR 1.451-8(c)(4) and (d)(5)).
The return reconciles the gap on Schedule M-1: line 4 shows income taxed this year but not yet booked as revenue, and line 7 shows revenue booked this year that was already taxed or is not taxable this year (Form 1120). A corporation whose total receipts and year-end total assets are both under $250,000 may skip Schedule M-1 (Schedule K, question 13); one with total assets of $10,000,000 or more at year-end files Schedule M-3 instead (Form 1120 instructions). Keep the deferred revenue schedule with the tax file: it is the support for these lines.
What revenue policy should we write down for investors?
A one- or two-page revenue policy states the choices the books apply every month, so an investor, auditor or new bookkeeper gets the same answer. It should cover:
- When a subscription starts earning: contract start date, access date or go-live.
- The proration convention for mid-month starts and the period used (daily or monthly).
- When an unpaid invoice is booked as a receivable with deferred revenue.
- How setup, onboarding, training and custom work are treated, together with or apart from the subscription.
- How discounts, free months, upgrades, downgrades and renewals are recorded.
- How refunds, credits and cancellations are handled, and who approves them.
- How usage or overage fees are recognized.
- The ARR definition and how it reconciles to booked revenue.
- How sales tax on invoices is kept out of revenue; which states tax the subscription is covered in sales tax on SaaS and software.
Bundled contracts, usage pricing and contract changes can involve real judgment under the revenue standard. If the company expects an audit, settle those points with the auditor before the policy is final.
Example
All amounts are illustrative and in US dollars. Each company is a calendar-year C corporation.
An annual plan paid July 1
A customer pays $120,000 on July 1 for one year. The books earn $10,000 a month. At December 31, $60,000 is revenue and $60,000 is deferred revenue.
- Accrual return with the deferral method: $60,000 taxed this year, $60,000 next year, matching the books.
- Cash-method return: $120,000 taxed this year. If the company completes Schedule M-1, line 4 shows the $60,000 gap this year, and line 7 shows it next year when the books earn it.
A three-year prepayment
A customer pays $360,000 on July 1 for three years. The books earn $10,000 a month:
| Calendar year | Book revenue | Accrual return with deferral |
|---|---|---|
| Year 1 (July–December) | $60,000 | $60,000 |
| Year 2 | $120,000 | $300,000 |
| Year 3 | $120,000 | $0 |
| Year 4 (January–June) | $60,000 | $0 |
The accrual return taxes everything not earned in Year 1 in Year 2. A cash-method return taxes all $360,000 in Year 1.
A refund after four months
A customer pays $24,000 for one year and cancels after four months with a refund of the unused part. The books have earned $8,000, which stays revenue. The remaining $16,000 moves from deferred revenue to a refund owed, then to cash paid out. No past month is restated.
Different for you?
- You need to know exactly when a prepayment is taxed, or how a refund or expired credit changes it: see customer prepayments and deposits.
- The return is on the cash method and the books are accrual, or you passed the gross receipts limit: see switching from cash to accrual accounting, and get corporate tax help before filing Form 3115.
- Your deferred revenue was never booked, or a bank feed posted prepayments to revenue: see cleaning up your books before fundraising and get bookkeeping help to rebuild the schedule.
- Investors want the monthly package or the data room: see monthly financials for investors and the board and financial records investors ask for in due diligence.
- You charge sales tax on subscriptions: see sales tax on SaaS and software.
- The company is being sold: deferred revenue can be taxed early in the final year; see tax clean-up before selling your startup.
Figures on this page
| Figure | Value | Source |
|---|---|---|
| Cash-method gross receipts test for corporations and partnerships Average annual gross receipts for the 3 tax years before the current one, for tax years beginning in 2026 (section 448(c)); aggregation rules apply. Same figure as us.inventory.small-business-gross-receipts-limit, kept separate for the cash-method rule. | $32,000,000 Tax year 2026 | IRS: Rev. Proc. 2025-32, section 4.30 (Internal Revenue Bulletin 2025-45) Checked |
| Form 1120 test for skipping Schedules L, M-1 and M-2 Both total receipts (page 1, line 1a plus lines 4 through 10) and year-end total assets must be less than this amount; Schedule K, question 13. Latest final Form 1120 and instructions are for tax year 2025. | $250,000 Tax year 2025 | IRS: Instructions for Form 1120 Checked |
| Year-end total assets requiring Schedule M-3 Nonconsolidated or consolidated total assets on the last day of the tax year. Partial completion relief may allow Schedule M-1. Latest final Form 1120 instructions are tax year 2025. | $10,000,000 Tax year 2025 | IRS: Instructions for Form 1120 Checked |
Primary sources
- US Code: 26 USC 451, taxable year of inclusion
- eCFR: 26 CFR 1.451-8, advance payments for goods, services and certain other items
- eCFR: 26 CFR 1.451-3, applicable financial statements
- IRS: Publication 538, Accounting Periods and Methods
- IRS: Form 1120 (Schedule M-1)
- IRS: Instructions for Form 1120 (2025)
- IRS: Instructions for Form 3115
About this guide
Edited and reviewed by Di Lu, CPA on . It explains general rules for the tax year shown. It is not advice for your situation.
Changes
- : First published.