Dictionary / Expense
What does Expense mean in accounting?
Quick definition
GeneralExpenditure for operating cost of a present or past period. This term guides how bookkeepers record, classify, and explain related transactions in routine financial reporting.
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Examples
Slip rent that belongs on this month's P&L
You run a kayak-tour company. On July 9, a marina bills $640 for July slip rental and launch fees. Those fees are this month's operating cost, so they are an expense: enter the bill in QuickBooks Online or Xero dated July 9 to Rent expense, and July's P&L takes $640. The later ACH is the expenditure; the P&L line is the expense. Code the bill to Equipment and you capitalize a month of dock use.
A kiln buy that should stay off the P&L
You run a pottery studio. On February 16, a kiln supplier bills $3,650 for a used electric kiln you will fire for years. That payment is still an expenditure, but it is not an expense of February because it is not this period's operating cost. Enter the bill to Shop equipment so the balance sheet rises $3,650 and February's P&L does not take the kiln. Dump it on Supplies expense and one month absorbs a buy meant for later seasons.
Why it matters
Expense is the expenditure that is this or a past period's operating cost: rent already used, supplies already consumed, wages for days already worked. You will post these most weeks, then check them every close so the P&L matches the period you are looking at. Treat a lasting machine buy as expense and one month of profit takes a hit meant for later years; that outlay still happened, but it bought an asset, not this period's operating cost. Mix it with current expense and you forget a past period's cost can still be expense; mix it with deferred expense and unused prepaid hits the P&L as if you already used it.
Further reading
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What is Expense in bookkeeping?
Expenditure for operating cost of a present or past period.
When should I use Expense?
Use Expense when the transaction facts match its definition and you need the ledger and financial statements to reflect the correct account and period.
What is a common mistake with Expense?
Expense is used for expense entries, while Earned Income covers a related but distinct bookkeeping purpose. Review both terms before posting unusual transactions. A common mistake is applying it by label only instead of checking the underlying transaction details.