A written receipt is a short record that two parties exchanged money, and to do its job it needs both names, the date, the amount, a description of what the payment covered, and the payee’s signature. That single document can settle a payment dispute, unlock a warranty claim, or defend a deduction if the IRS ever asks how you spent your money.1Internal Revenue Service. Burden of Proof
What Belongs on a Written Receipt
No single federal statute prescribes a universal receipt format. But a receipt only helps you if someone reading it months later can tell exactly what happened. Five elements do that work:
- Names. The full legal names of the person paying and the person receiving. Nicknames and business abbreviations invite confusion if the document ever surfaces in court.
- Date. The exact calendar date of the payment. This anchors warranty periods, contract deadlines, and the IRS statute of limitations.
- Amount. The total paid. Writing it in both numerals and words (“$1,200 / one thousand two hundred dollars”) removes ambiguity if one version is smudged or altered.
- Description. A short line stating what the payment was for. “March 2026 rent at 412 Oak Street” works. “Payment” does not. Specificity stops anyone from later claiming the money applied to a different debt.
- Signature. The payee’s signature confirms the money was actually received. On a pre-printed form, fill every field or mark unused lines “N/A” so no one can add terms afterward.
A receipt missing one of these can still be useful, but it becomes harder to defend if the other party disputes the transaction.
When the IRS Requires a Written Receipt
Section 274(d) of the tax code sets a bright line for business expenses. You need documentary evidence — a receipt, paid bill, or equivalent — for any travel, meal, gift, or transportation expense of $75 or more. Lodging while traveling away from home always requires a receipt, no matter the cost.2Internal Revenue Service. Publication 463 – Travel, Gift, and Car Expenses
Below $75, you still have to record the amount, date, place, and business purpose; you just have more flexibility about how. A credit card statement plus a note in an expense log can do the job. A vague memory cannot. The substantiation rules require four things for each expense: the amount, the time and place, the business purpose, and the business relationship of anyone else who benefited.3Office of the Law Revision Counsel. 26 U.S. Code 274 – Disallowance of Certain Entertainment, Etc., Expenses
If you cannot back up a claimed deduction, the IRS can impose an accuracy-related penalty of 20% on the underpayment tied to negligence or disregard of the rules, on top of losing the deduction itself.4Internal Revenue Service. Accuracy-Related Penalty
Receipts for Charitable Donations
Charitable contributions have their own rules. For any cash or check gift, even a small one, you need either a bank record or a written communication from the organization showing its name, the amount, and the date.5Internal Revenue Service. Charitable Contributions
At $250 or more, the bar rises. You must obtain a contemporaneous written acknowledgment from the charity before you file your return (or before the return’s due date, including extensions). The acknowledgment has to state the cash amount or describe any property donated, say whether the charity gave you any goods or services in return, and if it did, provide a good-faith estimate of their value.6Office of the Law Revision Counsel. 26 USC 170 – Charitable, Etc., Contributions and Gifts Without that acknowledgment, the IRS can deny the entire deduction, no matter how generous the gift.
When a payment over $75 buys you something in return — say, a $150 gala ticket that includes a $60 dinner — the charity itself must give you a written disclosure statement explaining that only $90 is deductible and estimating the dinner’s value.7Internal Revenue Service. Substantiating Charitable Contributions
Receipts for Employee Reimbursements
If your employer pays you back for business expenses, the receipt is what keeps that reimbursement from becoming taxable income. Under an “accountable plan,” three conditions apply: the expense must have a business connection, you must substantiate it with adequate records, and you must return any excess. Substantiation follows the same Section 274(d) standards used for deductions.8Internal Revenue Service. Revenue Ruling 2003-106
The safe-harbor deadline for turning in receipts is 60 days after you pay or incur the expense.8Internal Revenue Service. Revenue Ruling 2003-106 Miss the window and the reimbursement gets reclassified as wages. Your employer must add it to your W-2, withhold income tax, and pay employment taxes on it.
Everyday Situations Where a Receipt Protects You
Some routine transactions carry outsized risk without paper. Cash rent is a common one. Once the money leaves your hand there is no bank record to fall back on, and many states require landlords to issue a written receipt when a tenant pays in cash. Even in states without such a mandate, a receipt heads off the “I never got it” defense.
Private vehicle sales are another. A receipt listing the buyer, seller, VIN, sale price, and date is what your motor vehicle office wants to see when you transfer the title. Without it, the buyer may struggle to register the car and the seller may struggle to prove they no longer own it.
Professional services paid in cash or by personal check deserve the same treatment. A receipt from a contractor, consultant, or freelancer is both proof of payment and your evidence for a business expense deduction.
Paper Receipts vs. Digital Receipts
Paper is still valid, but electronic records carry the same legal weight. The Electronic Signatures in Global and National Commerce Act says a signature or record cannot be denied legal effect solely because it is electronic.9Office of the Law Revision Counsel. 15 USC 7001 – General Rule of Validity A PDF emailed to you, a signed digital form, or a receipt stored in a cloud accounting system all qualify as documentary evidence.
Digital receipts also come with practical advantages. They timestamp themselves, they are harder to alter undetectably, and they are much easier to find when a dispute or audit arrives.
How Long to Keep Receipts
The IRS ties record retention to the statute of limitations on your return. The default is three years from the filing date, but certain situations stretch that window:10Internal Revenue Service. How Long Should I Keep Records?
- Three years is the default. Returns filed before the due date are treated as filed on the due date.
- Six years applies if you fail to report income totaling more than 25% of the gross income shown on your return, or if the omission involves foreign financial assets over $5,000.11Internal Revenue Service. Topic No. 305 – Recordkeeping
- Seven years applies to refund claims tied to bad debt deductions or losses from worthless securities.11Internal Revenue Service. Topic No. 305 – Recordkeeping
For most people, three years is the working number. If you run a business or carry complex deductions, six or seven years of records is cheap insurance.
If You Lose a Receipt
A lost receipt does not automatically mean a lost deduction. Under the Cohan rule, a doctrine from a 1930 court decision, a taxpayer who can prove they paid or incurred a deductible expense but cannot show the exact amount may claim a reasonable estimate. You still need a factual basis for the number; guessing is not enough.12Cornell Law Institute. Cohan Rule Bank statements, credit card records, calendar entries, and testimony from the other party can help rebuild the record.
The rule has a firm limit. It does not apply to expenses covered by Section 274(d) — travel, meals, gifts, and listed property — where strict substantiation is required.12Cornell Law Institute. Cohan Rule For those categories, no receipt and no equivalent documentary evidence means no deduction. Photographing or scanning receipts at the point of purchase takes seconds and removes the risk.