If the IRS audits you and you do not have proof to back up deductions you have claimed, the IRS can disallow them. This could result in you owing more tax, as well as paying added penalties and interest on that tax. Furthermore, if you fail an IRS audit, it could prompt the IRS to flag your tax return for future audits.

Keep in mind that receipts are just one form of proof that you can provide the IRS for deductions you’ve claimed. Bank and credit card statements, invoices, canceled checks, email confirmations, and sworn statements can all be used to prove deductions.

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Sharon Brucker, CPA Senior Tax Research Analyst Published on: December 17, 2025
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*This content is for general informational purposes only. It is not intended to be comprehensive and should not be construed as professional tax or financial advice for any specific individual tax situation. Taxpayers should always consult a qualified professional for individual guidance. This information constitutes a solicitation under the Treasury Department's Circular 230. Most offices are independently owned and operated.