At the end of each fiscal period, certain general ledger accounts need to be updated and temporary accounts must be closed out. Temporary accounts, like revenue and expense accounts, have their balances reset to zero through closing entries. Closing entries credit revenue accounts and debit expense accounts, then transfer the net income or loss to the owner's capital account through an income summary account. Once adjusting and closing entries are posted, a post-closing trial balance is prepared to verify the accounting cycle for the period is complete.