Lost a receipt? How to still prove a business expense

Does the IRS require a receipt for every business expense?

No. Federal tax law requires you to keep records that are sufficient to show your income and deductions, and IRS guidance on what kind of records to keep lists receipts alongside canceled checks, account statements, invoices and credit card slips. For ordinary expenses — office supplies, software, a replacement phone charger — the question is whether your records as a whole show the amount, the date, the payee and the business purpose.

The stricter rules sit in section 274(d) of the tax code, which covers travel away from home, gifts and listed property such as cars. The IRS applies the same substantiation elements to business meals in Publication 463. Under Treasury Regulation §1.274-5(c)(2)(iii), documentary evidence such as a receipt or paid bill is required for any lodging expense while traveling away from home, and for any other expenditure of $75 or more.

What should you do first when a receipt goes missing?

Get a copy from the merchant before trying anything else. A duplicate issued by the seller is the same kind of evidence as the original, while every other option is something you assembled yourself. Work through these in order:

1. Search your email and accounts. Online orders, subscriptions, rideshares, airlines and hotels almost always send an electronic receipt or keep one in your account history. Search your inbox for the merchant name and the amount.
2. Ask the merchant for a reprint. Many retailers can look up a transaction by the card used, the date and the store, and reprint it. Service providers can resend an invoice. Do it quickly; some point-of-sale systems only keep searchable history for a limited time.
3. Download the card or bank statement. It proves the date, the amount and the merchant name, which are three of the elements you need.
4. Collect corroborating evidence. A calendar entry for the client meeting, the email that set it up, a photo of the equipment you bought, a delivery confirmation or a project file that shows the item in use.
5. Write a dated note. Record what was bought, why, and what happened to the receipt (see the template below), then file it with everything else.

Is a bank or credit card statement enough without the receipt?

Usually not on its own. IRS Publication 583 is direct about it: proof of payment of an amount, by itself, does not establish that you are entitled to a deduction, and you should also keep documents such as invoices and sales slips to show you incurred the cost. A statement line reading “HOME DEPOT #4410 — $184.37” proves you paid a hardware store. It does not show whether you bought shelving for your workshop or a grill for your patio.

A statement becomes strong evidence once something else supplies the missing half: an order confirmation listing the items, a client email referring to the purchase, or a note written at the time. The combination is what does the work.

What should a lost-receipt note include?

There is no official IRS form for a missing receipt, so the note is your own record. Its value comes from being specific, being written close to the date of the purchase, and pointing to independent evidence. Keep it short and factual:

The “written on” line matters. A note made the following week is a near-contemporaneous record. The same note written after an audit letter arrives is a reconstruction, and it will be treated with far more skepticism. For meals, add who attended and their business relationship to you, because those elements have no other source.

What is the Cohan rule, and can you rely on it?

The Cohan rule comes from Cohan v. Commissioner, a 1930 decision of the Second Circuit involving the entertainer George M. Cohan. It lets a court estimate a deductible expense when the evidence shows the taxpayer clearly spent the money, even though exact records are missing. It is a real protection, but a weak one to plan around, for three reasons:

• The court needs a reasonable basis. Under Vanicek v. Commissioner (1985), if there is no rational basis for an estimate, nothing is allowed, even when some expense obviously occurred.
• Estimates lean against you. Courts applying Cohan typically weigh heavily against the taxpayer whose recordkeeping created the uncertainty, so the estimate is often well below what you actually spent.
• It does not apply to section 274(d) items. Travel, gifts and car expenses must be substantiated; they cannot be estimated. This is why a missing mileage log is so much more costly than a missing receipt for printer ink.

What if your records were destroyed in a fire, flood or theft?

The rules are more forgiving when losing the records was outside your control. Regulation §1.274-5T(c)(5) gives taxpayers the right to substantiate even travel, gift and car deductions by reasonable reconstruction when records were lost through circumstances beyond their control, such as fire, flood, earthquake or other casualty. The IRS publishes practical guidance on reconstructing records after a disaster: request statement copies from your bank and card issuers, ask suppliers and clients for copies of invoices, and document the event that destroyed the originals.

“Beyond your control” means an actual casualty. A receipt that faded in a wallet or went through the washing machine does not qualify, which is one more reason to digitize receipts as soon as you get them.

How do you stop losing receipts in the first place?

Capture the receipt at the moment you are handed it. Thermal paper fades, wallets get emptied, and a stack of loose receipts is exactly where the $75 one goes missing. The IRS has accepted electronic records since Revenue Procedure 97-22, provided they are legible and can be reproduced in hard copy; our guide to scanning receipts on iPhone covers what a usable scan needs. A weekly ten-minute review, as described in our receipt organization system, catches missing receipts while the merchant can still reprint them. And for anything unusual, the free receipt documentation helper walks through what supporting evidence a purchase should have.

Frequently asked questions