What Is a Donation Letter for Tax Purposes?

A donation letter for tax purposes is the written acknowledgment a charity sends confirming your gift, and federal law requires you to have one in hand for any single contribution of $250 or more before you can deduct it. Without that letter, the IRS can disallow the deduction even if your bank records prove the money left your account.

The $250 Rule and When You Need the Letter

Internal Revenue Code Section 170(f)(8) bars any deduction for a single contribution of $250 or more unless the donor obtains a contemporaneous written acknowledgment from the charity. Contemporaneous has a specific meaning: you must hold the letter by the earlier of the day you actually file your return or the due date of that return, including extensions.¹

File on March 15 and receive the letter April 1, and the window has closed. There is no late-filing workaround. The IRS has successfully disallowed deductions in court for taxpayers who had every other form of proof but lacked the written acknowledgment at the time of filing.

The $250 figure applies per contribution, not as an annual total. Three separate $200 gifts to the same charity don’t trigger the requirement, but a single $250 check does. Charities that handle this well send acknowledgments shortly after each qualifying gift, and many batch remaining letters by January 31 of the following year.

What the Letter Must Contain

The IRS does not prescribe a template, but the acknowledgment has to include a defined set of information to be valid. A note that just says “thank you for your generous donation” accomplishes nothing for tax purposes. The required elements, drawn from the statute and IRS guidance, are:²

The charity’s full legal name as registered with the IRS.
The dollar amount of any cash contribution.
For property, a description of what was given. The charity should not assign a dollar value to donated goods.
A clear statement of whether the organization provided any goods or services in return. If it provided nothing, the letter must say so explicitly.
If the donor did receive something in return, a good-faith estimate of its fair market value.
If the only thing provided in return was an intangible religious benefit, such as admission to a worship service, a statement to that effect instead of a dollar estimate.

The date of the contribution is not technically a statutory element of the acknowledgment itself, but nearly every organization includes it because donors need it for their records and the IRS expects to see it on the return.

When You Received Something in Return

If the charity gave you something in exchange for the gift, such as a gala dinner, concert tickets, or merchandise, only the portion of your payment above the value of what you received is deductible. A $500 payment for a gala where the dinner is worth $150 produces a $350 deduction, not $500.

The charity’s disclosure obligation kicks in whenever the total payment exceeds $75. The written statement must inform you that your deduction is limited to the amount exceeding the value of what you received, and it must include a good-faith estimate of that value.³ A charity that skips the disclosure faces a penalty of $10 per contribution, capped at $5,000 per fundraising event or mailing, waivable for reasonable cause.⁴

Gifts Under $250 Don’t Need a Letter, But They Need Something

Smaller cash gifts have their own documentation rule. Section 170(f)(17) prohibits any deduction for a cash, check, or electronic contribution of any amount unless you keep either a bank record or a written communication from the charity showing the organization’s name, the date, and the dollar amount.⁵ A credit card statement, canceled check, or bank statement satisfies this rule as long as it shows those three pieces of information.⁶ Notes in a check register are not enough on their own.

For payroll deduction, keep both a pay stub or W-2 showing the withheld amount and a pledge card from the charity showing its name.⁶ Dropping $20 in a collection plate with nothing to show for it will not support a deduction.

Property, Clothing, and Household Items

Donating property instead of cash adds documentation that scales with the claimed value. The acknowledgment letter itself follows the same rules as for a cash gift, except the charity describes the property without assigning a value. You determine fair market value, and at higher amounts the IRS demands independent verification.

Over $500: file Form 8283 (Noncash Charitable Contributions) with your return.⁷
Over $5,000: generally get a qualified appraisal from an independent appraiser and complete Form 8283, Section B. Publicly traded securities and certain other property are excepted.⁸

Clothing and household items must be in good used condition or better to be deductible at all, and any single item you value above $500 requires a qualified appraisal even if the total is well below the $5,000 general threshold.⁸ A letter that just reads “one bag of clothing” leaves you thin if you’re claiming $600 in designer items.

Vehicle Donations Use a Different Form

Donating a car, boat, or airplane worth more than $500 triggers a specific process. The charity files Form 1098-C with the IRS and gives you a copy that serves as the written acknowledgment. The form requires the vehicle identification number, year, make, and model, odometer mileage for motor vehicles, and the date the organization received the vehicle.⁹

If the charity sells the vehicle rather than using it in operations, your deduction is generally limited to the gross sale proceeds, not what you thought the vehicle was worth. The organization must report the sale date and the amount it received.⁹ A charity that knowingly provides a false or fraudulent acknowledgment for a vehicle donation, or fails to provide one, faces penalties tied to the higher of the claimed value or $5,000.¹⁰

Volunteer Expenses

You can’t deduct the value of your time, but you can deduct unreimbursed out-of-pocket costs you pay while volunteering for a qualified charity. If those expenses total $250 or more, you need a written acknowledgment from the organization just as you would for a cash gift. The letter has to describe the services you provided and state whether the charity gave you anything to reimburse your costs.¹¹

The expenses must be directly connected to your volunteer work and cannot be personal or family costs.¹¹ The same timing rule applies: you need the acknowledgment before you file or before the return’s due date, whichever comes first.

Solicitation Letters Are Not Acknowledgment Letters

“Donation letter” covers two very different documents. A solicitation letter is the ask, a fundraising appeal that describes the organization’s mission and requests support. It has no tax function and creates no record of a completed gift. An acknowledgment letter is the receipt sent after the gift is made, and it is the document the IRS rules describe. When people refer to donation letters in a tax context, they almost always mean the acknowledgment.

Grants From a Donor Advised Fund

If a gift arrives through a donor advised fund, the acknowledgment plays a different role. The tax deduction happened when the donor originally funded the DAF account, and the sponsoring institution issued the receipt at that point. A later grant from the DAF to a charity is not a separate deductible event. The charity should send a thank-you note without tax-receipt language, because the donor cannot claim a second deduction for money that was already deducted going into the fund.

How the Letter Fits Into Your Return

Traditionally, charitable deductions only reduced your tax bill if you itemized on Schedule A rather than taking the standard deduction. Starting in 2026, taxpayers who claim the standard deduction can also deduct up to $1,000 in cash charitable contributions, or $2,000 for married couples filing jointly, as an above-the-line deduction.¹² That change makes donation letters relevant to a far wider group of filers.

Email delivery of the acknowledgment is acceptable and has become the default for many organizations because it puts the letter in the donor’s hands right after the gift. Once you have it, keep it with your permanent tax records for as long as the IRS could audit the return, which is generally three years from the filing date and can extend to six years if the agency suspects a substantial understatement of income.

1
Office of the Law Revision Counsel. 26 USC 170 – Charitable, Etc., Contributions and Gifts – Section: Substantiation Requirement for Certain Contributions
2
Internal Revenue Service. Charitable Contributions – Written Acknowledgments
3
Office of the Law Revision Counsel. 26 USC 6115 – Disclosure Related to Quid Pro Quo Contributions
4
Internal Revenue Service. Charitable Contributions – Quid Pro Quo Contributions
5
Office of the Law Revision Counsel. 26 USC 170 – Charitable, Etc., Contributions and Gifts – Section: Recordkeeping
6
Internal Revenue Service. Substantiating Charitable Contributions
7
Internal Revenue Service. Topic No. 506 – Charitable Contributions
8
Internal Revenue Service. Publication 561 – Determining the Value of Donated Property
9
Internal Revenue Service. Instructions for Form 1098-C – Contributions of Motor Vehicles, Boats, and Airplanes
10
Office of the Law Revision Counsel. 26 USC 6720 – Fraudulent Acknowledgments With Respect to Donations of Motor Vehicles, Boats, and Airplanes
11
Internal Revenue Service. Publication 526 – Charitable Contributions
12
Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026