A cost is real before the bill arrives
A lot of the costs a business runs up don't come with an invoice the same day you incur them. Your team earns wages all month but gets paid after the period ends. Interest builds on a loan day by day, but the lender bills you on a cycle. You use electricity in June and the utility statement shows up in July. In each case the cost is genuinely yours during the period you used it — and accrual accounting insists you record it then, not whenever the paperwork or the payment finally lands. That recorded-but-unpaid cost is an accrued expense. (General education, not accounting advice.)
What an accrued expense is
An accrued expense is a cost you have incurred but not yet paid and, often, not yet even been billed for. Recording it does two things at once: it puts the expense on your profit & loss statement in the period the cost belongs to, and it creates a matching liability — an accrued liability — on your balance sheet for the amount you still owe.
This is the matching principle at work, the same idea behind adjusting entries: expenses should land in the same period as the activity that caused them. If your staff earned three thousand dollars in wages during the last week of the month but you pay those wages in the first week of the next month, accrual accounting records a three-thousand wage expense now and a three-thousand wages-payable liability now. The month that got the work also carries its cost.
Accrued expense versus accounts payable
These two look similar — both are amounts you owe and both sit among your liabilities — but the distinction is worth keeping straight:
- Accounts payable is a bill you have actually received and not yet paid. There's a vendor invoice in hand with a number on it. This is what fills your accounts payable aging report.
- An accrued expense is a cost you owe for which no invoice has arrived yet. You're estimating the amount from what you know — hours worked, the loan's interest rate, your typical utility usage — because the cost is real even though the paperwork hasn't caught up.
In practice, accrued expenses are usually recorded as part of the month-end close, then reversed or cleared when the actual bill arrives and moves into accounts payable or gets paid directly.
Common accrued expenses
A few show up again and again for small businesses:
- Accrued wages and payroll — work performed before period end but paid in the next payroll run.
- Accrued interest — interest that has built up on a loan or credit line but isn't billed until the next statement.
- Accrued utilities and services — electricity, water, or services used in the period with the invoice still to come.
- Accrued taxes — amounts like payroll taxes owed on wages already earned.
The thread tying them together is that the value was consumed inside the period, so the cost belongs inside the period — regardless of when cash actually leaves the account.
The reversal: don't double-count
The one trap with accruals is recording the cost twice. You accrue the utility expense at month end, then the real bill shows up and, if you're not careful, you book it again — overstating expenses. The fix is a reversing entry: at the start of the new period you reverse the accrual, so when the actual invoice arrives and you record it normally, the net effect is correct and the cost only hits once. Many systems handle this automatically once you flag an entry as an accrual.
Why it matters
Skip accruals and your monthly numbers get jumpy in a way that hides the truth — a month with no payroll cycle looks unusually profitable, then the following month looks worse when two pay runs land in it. Accruing the costs to the period that incurred them, the mirror image of the deferred revenue you record on the income side, gives you a profit figure you can actually trust and compare month to month.
Hosting Books lets you record accrued expenses as period-end adjustments and carry the matching liability until the real bill arrives, so each period reflects the costs it actually ran up rather than just the checks that happened to clear.
This article is general educational information about accounting concepts and is not accounting advice for your specific situation.