unearned revenue
Imagine a customer prepays you 600 today for six months of lawn mowing you haven't done yet. The cash is sitting in your pocket, which feels great — but it isn't really yours to claim as earnings. You owe that customer six months of work. If you ran off with the money tomorrow, you'd owe them a refund. Unearned revenue is the accounting name for cash you've collected but haven't yet earned.
Despite the word 'revenue' in its name, unearned revenue is a liability, not income. It represents an obligation to deliver goods or services in the future to a customer who has already paid. Each period, as you actually perform, you move a slice from this liability into real revenue. In the lawn example, you'd recognize 100 of revenue each month while the unearned revenue liability shrinks from 600 toward 0. Common real-world examples include magazine subscriptions, annual software licenses, gym memberships, gift cards, and airline tickets sold before the flight — all cash in hand for promises not yet kept.
This concept is the direct flip side of revenue recognition: it is exactly where the cash a company has collected, but not yet earned, parks itself on the balance sheet. For subscription and software businesses, the unearned revenue balance is watched closely as a signal of future, already-paid-for sales. The persistent beginner trap is reading 'revenue' in the name and assuming it boosts profit — it does the opposite at first, sitting as a debt until the company performs.
A software firm collects 1,200 on January 1 for a one-year license. On that day it records 1,200 of cash and 1,200 of unearned revenue (a liability) — and 0 revenue. Each month it recognizes 100 of revenue, so the liability falls to 0 and revenue reaches 1,200 only by year-end.
Cash up front becomes a liability first, then turns into revenue bit by bit as the service is delivered.
Despite its name, unearned revenue is a liability, not income; it raises profit only later, gradually, as the company actually delivers what was prepaid.