Proving Business Expenses

Everyone in business must keep records. Among other things, good records will help a business prepare the business tax returns, and will support items reported on tax returns. Taxpayers also must keep their business records available for inspection by the IRS.

In order to claim any deduction, a business owner, like any taxpayer, must prove two things: what expenses were for and that the expense was in fact paid or incurred. Supporting documents may include sales slips, paid bills, invoices, receipts, deposit slips, and canceled checks. The documents should show the amount paid and the reason for the expense. Businesses must keep their records as long as needed to qualify under the Tax Code. Generally, this means until the period of limitations for auditing the return expires.