Founder tool
Donation receipt builder
Fill in the gift and get a thank-you acknowledgment with everything the IRS asks for, ready to copy into a letter or an email, or to download.
Your acknowledgment will appear here
Fill in the gift, and you'll get the letter's text with every statement the IRS asks for, a checklist of what it includes and why, and a file to download. Nothing you type is stored or put in the page address.
Golden hint
Send it within a few days, and keep a copy of every acknowledgment you send. One year-end letter listing each gift also works, if it has everything for each one.
The rules in plain words
The full guide: thanking donors the way the IRS requires.
- When donors need it: for any single gift of $250 or more, a donor can't claim a federal tax deduction without a written acknowledgment from you. Smaller gifts don't add up toward the $250, but a thank-you with the same wording never hurts.
- When to send it: it must be “contemporaneous”, meaning the donor has it by the date they file their tax return for that year, or the return's due date with extensions if earlier. Charities usually send them by January 31 of the next year at the latest.
- Letter, email or receipt: there's no IRS form. A letter, postcard, email or computer-generated receipt is fine if it has the required wording. The donor keeps it; they don't attach it to their return.
- When the donor got something back: if a payment over $75 was partly for goods or services (a gala dinner, a ticket), you must tell the donor in writing how much is deductible and give your good-faith estimate of what they received. Small token items with your logo and some low-cost membership benefits are exceptions; the IRS adjusts those limits for inflation each year.
- Keep a copy: of every acknowledgment, with your gift records, in line with your document retention policy.
Source: IRS Publication 1771, Charitable Contributions: Substantiation and Disclosure Requirements (Rev. 11-2023), checked October 21, 2026. Vehicles, boats and planes worth over $500, and conservation easements, have their own rules not covered here. See also our donor thank-you letter template.
General information, not legal or tax advice. If you're unsure, ask your accountant.