IRS 170(f)(8): Acknowledgment Rules, Deadline, and Quid Pro Quo

To deduct a donation of $250 or more, you need an IRS 170(f)(8) written acknowledgment from the charity in your hands before you file, and it has to say three specific things: the amount of cash or a description of the property, whether the charity gave you anything in return, and if so, a good-faith estimate of what those goods or services were worth.¹ Miss any piece of that and the deduction is denied, even if the gift plainly happened.

When the $250 Rule Kicks In

The requirement attaches to any single contribution of $250 or more to a qualified organization. One $300 check triggers it. Two separate $150 checks written the same day for different purposes do not, because the IRS does not add smaller gifts together to reach the threshold. The test is per contribution, not per charity and not per year.

The charity is expected to send the acknowledgment, but the legal burden sits entirely on you to obtain and keep it.² A charity that forgets to send one faces no penalty under this rule. A donor who forgets to get one loses the deduction. That asymmetry catches people out later, especially when the organization has closed, merged, or lost track of donors by the time an audit begins.

The Three Things the Acknowledgment Must Say

A valid acknowledgment under Section 170(f)(8) covers three items. If one is missing, the whole document fails.

The amount of cash contributed, or a description (but not a value) of any donated property. A charity acknowledging a donated instrument would write something like “one Steinway Model B grand piano” without attaching a dollar figure. Fair market value is your job to determine, not the charity’s.³
Whether the organization provided any goods or services in exchange. If nothing was given back, the document must say so explicitly. A generic “thank you for your generous donation” that never addresses this question does not satisfy the statute.
A description and good-faith estimate of the value of anything you received. You can only deduct the amount that exceeds what came back to you.

The charity is specifically prohibited from stating the fair market value of donated non-cash property in the acknowledgment.³ This surprises donors who expect the charity to confirm what their donated car or artwork was worth. Valuation stays with the donor, and for high-value property a separate qualified appraisal may be required under different rules.

Intangible Religious Benefits

One narrow substitute exists for the third item. If the only thing you received in return was an intangible religious benefit from an organization operated exclusively for religious purposes, the acknowledgment can simply say so instead of estimating a value.¹ An intangible religious benefit is one that would not normally be sold in a commercial transaction. Admission to a religious ceremony qualifies. A church dinner with an actual meal does not.

The Deadline: What “Contemporaneous” Means

You must have the acknowledgment by the earlier of two dates: the day you file the return for the year of the contribution, or the due date for that return including extensions.¹ For most individuals on the calendar year, that means April 15 of the following year, or October 15 if you extended.

You cannot wait until an audit and then go back to the charity for paperwork. The Tax Court treats the timing rule as a hard statutory condition. In Albrecht v. Commissioner (T.C. Memo. 2022-53), the court denied a charitable deduction solely because the written acknowledgment was not contemporaneous. Many charities send annual summary statements by January 31, which meets the timing requirement for every gift made the previous year.

Format: What Counts as Written

The IRS does not require any particular format. A letter, an email, a postcard, or a receipt printed at the bottom of an online donation confirmation all work. Letterhead is not required and neither is notarization. What matters is the content.³

One document can cover multiple contributions of $250 or more, provided each gift’s required information is listed separately and you receive the document within the contemporaneous window. A canceled check alone is not enough for any single gift of $250 or more.⁴ A bank record proves the money left your account. It says nothing about whether the charity gave you goods or services in return, and that is one of the three required elements.

Workplace Payroll Deductions Follow Different Rules

If you give through employer payroll deductions, the substantiation setup is not the single acknowledgment described above. You need two documents: a pay stub, Form W-2, or similar employer record showing the amount withheld, and a pledge card or document from the charity stating its name and confirming that no goods or services were provided in return.⁵

When $250 or more is withheld from a single paycheck, the same two-document approach applies, but the pledge card must specifically state that the organization does not provide goods or services in exchange for payroll-deducted contributions. A single pledge card can cover the whole year’s payroll gifts as long as it contains all the required information. If neither the pay stub nor the pledge card shows the contribution date, you need a separate document establishing it.⁵

When You Got Something in Return: Quid Pro Quo

A quid pro quo contribution is a payment that is partly a gift and partly a purchase. Pay $500 for a gala ticket where the dinner and entertainment are worth $150, and only $350 is deductible.

When a quid pro quo payment exceeds $75, the charity itself has a separate legal obligation to give you a written disclosure telling you that only the amount above the value of the goods or services is deductible, and providing a good-faith estimate of that value.⁶ This $75 disclosure rule is separate from the $250 acknowledgment rule and can apply even when the deductible portion falls below $250. When the deductible portion reaches $250, both requirements apply, and in practice a well-drafted charity letter can satisfy both at once.

The IRS treats very small benefits as insubstantial and does not require you to reduce the deductible amount for them. For 2025, a benefit was considered insubstantial if its fair market value did not exceed the lesser of 2 percent of the payment or $136. The charity also does not owe a quid pro quo disclosure when the only thing provided is an intangible religious benefit.⁷

What Happens If the Acknowledgment Is Missing or Defective

The IRS and the Tax Court treat Section 170(f)(8) as a threshold. Miss it and you lose the deduction entirely, even for a gift that was generous, legitimate, and made to an unquestionably qualified charity.¹ In 15 West 17th Street LLC v. Commissioner (147 T.C. 557, 2016), the Tax Court denied a substantial charitable deduction because the acknowledgment did not satisfy the statutory content requirements, even though no one disputed that the contribution actually occurred.

A denied deduction on audit produces a tax deficiency, interest running from the original due date, and potential accuracy-related penalties of 20 percent on the underpaid tax. On large contributions, those numbers grow quickly. The charity’s exposure is much smaller: no penalty under (f)(8) for failing to send an acknowledgment, and only a $10-per-contribution penalty (capped at $5,000 per event or mailing) for failing to make the separate quid pro quo disclosure when required.⁶

The safest habit is to treat the acknowledgment as part of the donation itself. Ask for it at the time of giving, read it to confirm all three elements are present, and file it with your tax records before you sit down with the return. Chasing paperwork after the fact is where most deductions come apart.

1
Office of the Law Revision Counsel. 26 USC 170 – Charitable, Etc., Contributions and Gifts
2
Internal Revenue Service. Publication 1771 – Charitable Contributions Substantiation and Disclosure Requirements
3
Internal Revenue Service. Charitable Contributions – Written Acknowledgments
4
Internal Revenue Service. Charitable Organizations – Substantiation and Disclosure Requirements
5
Internal Revenue Service. Publication 526 (2025) – Charitable Contributions
6
Internal Revenue Service. Charitable Contributions – Quid Pro Quo Contributions
7
Internal Revenue Service. Substantiating Charitable Contributions