Deferred revenue is cash collected for service not yet delivered — a balance-sheet liability you earn into revenue over the term.
Deferred revenue = cash collected for subscriptions − revenue recognised to date
A customer pays £1,200 upfront on 1 January for a twelve-month plan. By 30 June you have delivered six months.
£1,200 collected − £600 recognised (6 × £100) = £600 deferred revenue remaining
Deferred revenue (also called unearned revenue) is money in the bank that you are not yet allowed to call revenue. When a customer pays for an annual plan upfront, you hold their cash but have only delivered one month of service at a time. The unearned portion sits on the balance sheet as a liability, because you still owe the customer the rest of the year.
It is the direct consequence of billing ahead of delivery. A £1,200 annual plan billed upfront creates £1,200 of deferred revenue on day one; each month you deliver, £100 moves off the balance sheet and onto the income statement as recognised revenue. After six months, £600 has been earned and £600 remains deferred.
Deferred revenue is the bridge between cash and accrual accounting, and it is why billings can run far ahead of recognised revenue. A growing deferred-revenue balance is usually a healthy sign — it means you are collecting cash upfront and have contracted revenue waiting to be earned — but it is an obligation, not a windfall.
Deferred revenue is real cash with strings attached: it funds your runway today but represents service you still owe. Watching the balance tells you how much contracted revenue is queued up to be recognised, and the change in it is the cleanest way to back into billings — the difference between collecting a year upfront and billing monthly is one of the biggest levers a SaaS has over its cash position.
There is no target balance — deferred revenue scales with how much you bill annually upfront. The useful read is the ratio to annual recognised revenue: a high deferred balance signals strong upfront collection and a cash-rich, runway-friendly billing mix.
A liability. You have taken the customer's cash but not yet delivered the service, so you owe them future product. It only becomes revenue as you earn it month by month.
The change in deferred revenue plus recognised revenue gives you billings for a period. A rising deferred balance means you billed and collected more than you recognised.
Mostly current. The portion you will deliver within the next twelve months sits in current liabilities; anything beyond twelve months — typical on multi-year prepaid contracts — is split out as non-current (long-term) deferred revenue. A £1,200 annual plan is entirely current, but a two-year prepay would book the second year as non-current until it rolls inside the twelve-month window.
Historically, under ASC 805, an acquirer measured assumed deferred revenue at fair value — the cost to deliver the remaining service plus a normal margin — not at the seller's book balance. Because the original selling and marketing cost was already incurred, the written-down balance was usually far lower; in software deals a 40–70% haircut was common, so post-close revenue temporarily looked understated. ASU 2021-08 changed this: acquirers now measure acquired deferred revenue from customer contracts under ASC 606 (at transaction price, as if they had originated the contract) rather than at fair value, which eliminates the haircut for that revenue. It is fully effective for acquisitions from fiscal years beginning after 15 Dec 2022 (public) / 15 Dec 2023 (all others), so the 40–70% write-down described above is largely historical for deals closing today — though deferred revenue outside ASC 606 (non-customer arrangements) can still be written to fair value.
They are opposites. Deferred revenue is cash you have collected but not yet earned (a liability); accounts receivable is revenue you have earned or invoiced but not yet collected (an asset). Annual upfront billing creates deferred revenue; billing in arrears or on net terms creates receivables.
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