Donor Acknowledgment Letters and Tax Receipts: What Nonprofits Must Provide Under IRC 170

A donor’s deduction and a nonprofit’s acknowledgment letter are two sides of the same rule. The donor cannot claim a gift of $250 or more without a written acknowledgment from the organization, and the organization has its own obligation to disclose the value of anything given in return once a payment crosses $75. Most nonprofits treat receipting as an afterthought the bookkeeper handles once a year in January. That works until a donor gets audited, cannot produce the letter, loses the deduction, and calls asking why nobody told them the rules. This guide sets out exactly what the law requires and what happens when it is not followed.

What are the substantiation requirements for contributions?

The IRS runs a two-tier system for charitable contribution substantiation, and the dividing line is $250. Below that number, the burden sits entirely with the donor. At or above it, the burden shifts to the organization, and no amount of donor diligence can substitute for what only the charity can provide.

For any single contribution under $250, the donor needs a bank record (a cancelled check, a bank statement, or a credit card statement) or a written receipt from the organization showing the charity’s name, the date, and the amount. No further documentation is required, and the organization has no independent obligation to issue anything, though most do as a courtesy.

Once a single contribution reaches $250 or more, the rule changes entirely. IRC 170(f)(8) states that no deduction is allowed for any contribution of $250 or more unless the donor substantiates it with a contemporaneous written acknowledgment from the donee organization. The statute is written as a bar on the deduction, not a documentation preference. A cancelled check proving the money moved is not enough, a pledge card is not enough, and the donor’s own testimony that the gift was made is not enough. Only the organization’s written acknowledgment satisfies the statute.

This threshold applies per contribution, not per year. A donor who gives $200 in March and another $200 in September has made two contributions, neither reaching $250, so the requirement does not apply to either one, even though the annual total is $400. A donor who gives $300 in a single check needs the acknowledgment for that gift regardless of what else they gave that year.

The strictness surprises people who assume the IRS applies a reasonable cause exception here the way it does elsewhere in the code. It does not. The Tax Court has repeatedly denied deductions to donors who made real, substantial gifts to legitimate charities but could not produce a compliant letter, sometimes for gifts in the hundreds of thousands of dollars. The organization’s failure to issue the letter, or its issuance of a defective one, becomes the donor’s problem, not the organization’s. That asymmetry is why nonprofits need to treat acknowledgment letters as a core compliance function, not a courtesy.

What must an acknowledgment include for $250+ donations?

The written acknowledgment required by IRC 170(f)(8)(B) must contain three specific elements, and missing any one of them makes the letter defective for substantiation purposes.

• The amount of cash contributed, or a description (not a valuation) of any noncash property contributed. The organization describes what it received; it does not put a dollar figure on donated property, because valuing noncash gifts is the donor’s job, not the charity’s.
• A statement of whether the organization provided any goods or services in exchange for the contribution, in whole or in part.
• If goods or services were provided, a description of those goods or services and a good faith estimate of their fair market value. If nothing was provided, the letter should say so explicitly rather than staying silent on the point, since silence invites the IRS to question whether something was given and just not disclosed.

A short line covers most straightforward gifts: “No goods or services were provided in exchange for this contribution.” That single sentence separates a compliant letter from a defective one, and it costs nothing to include.

Timing matters as much as content. The acknowledgment is “contemporaneous” only if the donor obtains it by the earlier of the date the donor files the return claiming the deduction, or the due date (including extensions) for that return. A letter mailed the following year, after the return has already been filed, does not satisfy the statute even if it contains all the right language. Organizations that wait until late January to send annual receipts are cutting it close for donors who file early.

There is no statutory penalty on the organization for failing to send this letter. The law does not require the charity to issue it at all, it only conditions the donor’s deduction on having received it. In practice the distinction is meaningless: an organization that does not reliably issue compliant letters will have donors who cannot deduct their gifts, and donors who cannot deduct their gifts do not stay donors for long. Every organization should issue these letters as standard practice for every gift of $250 or more, without waiting to be asked.

What’s the quid pro quo disclosure for payments over $75?

Separate from the $250 substantiation rule, IRC 6115 imposes its own disclosure requirement on the organization whenever a donor makes a payment of more than $75 that is partly a contribution and partly a payment for goods or services received in return. This is a quid pro quo contribution, literally “this for that,” and the rule targets events, auctions, and membership benefits where money changes hands for a mix of reasons.

The organization must provide a written statement informing the donor that the deductible amount is limited to the excess of what they paid over the fair market value of what they received, including a good faith estimate of that value. This obligation belongs to the organization, not the donor, who does not have to ask for it or know the rule exists. The charity must furnish it in connection with either the solicitation or the receipt of the payment.

The penalty falls on the organization: $10 for each contribution for which the required statement was not furnished, capped at $5,000 per fundraising event or mailing. A gala that sells 300 tickets without the disclosure is exposed to the full $5,000 cap, not $3,000 (300 times $10), because the per-event cap controls.

Two exceptions keep small-dollar items out of the regime. Token or low-cost items given with a contribution do not reduce the deductible amount and do not trigger disclosure, provided they meet the IRS’s insubstantial value thresholds, indexed annually (for 2024, roughly low-cost articles under $12.50, or items bearing the organization’s name or logo worth up to $62.50 where the contribution is at least $25). The other exception covers memberships: a donor who pays $75 or less for a membership that includes benefits like free admission or a gift-shop discount triggers no disclosure at all.

How does a gala dinner or fundraising event work?

Ticketed fundraising events are the most common place the quid pro quo rule shows up, and where organizations most often get the math wrong by pricing the disclosure off the wrong number.

The fair market value figure has to reflect what the benefit would actually cost someone in the open market, not the organization’s discounted or donated cost for providing it. If a hotel donates the ballroom and a board member’s restaurant caters the meal at no charge, the disclosed value is still what a member of the public would pay for that dinner and venue elsewhere, not zero. Understating fair market value to inflate the deductible portion is exactly the kind of error that draws IRS attention to an event’s substantiation practices.

How are vehicle donations handled?

Vehicle donations run on their own rules, stricter than the general noncash regime, because Congress specifically targeted vehicle donation abuse in 2004. IRC 170(f)(12) governs any donated car, boat, or airplane with a claimed value over $500.

The default rule: if the charity sells the vehicle without significant intervening use or material improvement, the donor’s deduction is capped at the gross proceeds from the sale, not the vehicle’s Blue Book value or any other fair market value estimate. Most donated vehicles go straight to auction, often for far less than the donor assumed.

The organization has 30 days from the sale date to provide a contemporaneous written acknowledgment, typically Form 1098-C, showing the donor’s name and taxpayer ID, the vehicle identification number, confirmation that the sale was an arm’s length transaction, the sale date, and the gross proceeds. The deduction is limited to the figure stated on that form.

The exception is significant intervening use or material improvement. If the charity actually uses the vehicle in its operations (delivering meals, transporting clients) for a meaningful period before selling it, or performs a major repair that materially increases its value, the gross-proceeds cap does not apply and the donor can deduct fair market value instead. In that case the acknowledgment must certify the intended use or improvement, and the 30-day window runs from the date of the contribution rather than the date of any later sale.

The $500 threshold is the trigger for the whole regime. Below it, ordinary noncash substantiation rules apply. At or above it, Form 1098-C and the gross-proceeds limitation take over, and an organization running a vehicle donation program needs a process that gets the form out inside the 30-day window every time, since a late or missing 1098-C leaves the donor with no valid substantiation at all.

How are noncash property donations valued and reported?

Determining the value of donated property is the donor’s job, not the organization’s. The charity’s role is narrower: acknowledge what was received, sign the appropriate forms, and, in specific circumstances, report what happens to the property afterward.

For any noncash contribution over $500, the donor must file Form 8283, Section A. The organization has no signature role at this level; its written acknowledgment under the standard $250 rule, describing the property without valuing it, is sufficient.

Once a single item or a group of similar items exceeds $5,000 in claimed value, the rules tighten. The donor needs a qualified appraisal, and the organization must sign Part V of Form 8283, the donee acknowledgment. That signature only confirms the organization received the described property on the stated date; it is not an endorsement of the appraised value, and staff should make that distinction clear, since donors sometimes present the signature as if the charity validated their number.

For claimed values over $500,000, the donor must attach the appraisal itself to the return, not merely retain it for audit.

Under IRC 170(f)(11), the organization has one further obligation tied to property it signed for on Form 8283: if it disposes of that property within three years of the contribution date, it must file Form 8282 with the IRS and give a copy to the donor. This lets the IRS compare the sale price against the claimed deduction, and it exists because overvalued noncash donations, art and collectibles especially, have been a persistent area of abuse.

What about cash donations under $250?

The $250 threshold does not mean smaller cash gifts are documentation-free. Under IRC 170(f)(17), no deduction is allowed for any cash, check, or monetary gift unless the donor maintains a bank record or a written communication from the organization showing its name, the date, and the amount. This applies regardless of dollar amount: the donor of a $20 gift needs the same basic documentation as the donor of a $200 gift, just without the goods-and-services disclosure that kicks in at $250.

Currency deserves particular attention. Cash in the literal sense (bills in a collection plate or a donation box) leaves no bank record by definition, so IRC 170(f)(17) effectively requires the organization to issue a written receipt for the donor to have any deduction at all, no matter how small the amount. An organization running cash-heavy fundraising should have a receipting process in place for anyone who wants one.

A simple receipt for gifts under $250 should show the organization’s name, the date, the amount, and, if applicable, a statement that no goods or services were provided. Organizations that use one template for every donation regardless of size, always including the goods-and-services language, are applying the stricter standard uniformly, a reasonable way to avoid tracking two templates.

What are the penalties for improper acknowledgments?

There are two entirely separate consequences here, and conflating them is a common mistake. One falls on the organization. The other falls on the donor.

The quid pro quo penalty under IRC 6115 is the organization’s exposure: $10 per contribution for which the required disclosure was not furnished, capped at $5,000 per fundraising event or mailing. It is a real, assessable penalty against the charity, and the only statutory penalty aimed directly at the organization in this area.

The $250-and-over acknowledgment rule works differently. There is no statutory penalty against the organization for failing to send the letter. The consequence lands entirely on the donor, who loses the deduction if the acknowledgment was never obtained, was obtained late, or was missing one of the three required elements. The IRS enforces this rule by denying the donor’s deduction on audit, a far more painful outcome for the donor than any penalty the IRS could assess against the nonprofit.

The Tax Court has been rigid on this point. In Durden v. Commissioner (T.C. Memo 2012-140), the court denied a $25,171 deduction because the church’s acknowledgment letter did not include the statement that no goods or services were provided in exchange. In Kunkel v. Commissioner (T.C. Memo 2015-8), a $60,000 deduction was denied for the same reason. In both cases, the donors had cancelled checks and the organization’s letter, but the letter lacked the required element.

That asymmetry does not mean organizations can treat the $250 rule casually. A nonprofit that routinely sends late or incomplete acknowledgments will lose donors the moment one of them gets audited and loses a deduction because of it. Word travels fast among major donors, and the reputational cost of sloppy receipting is larger, over time, than any penalty on the books.

The IRS has also been consistently strict about what “contemporaneous” means. Courts have denied deductions where the acknowledgment letter was technically accurate but simply arrived after the return was filed, even by a matter of days, even where the charity’s delay was the sole cause. There is no reasonable cause exception written into IRC 170(f)(8), and the Tax Court has declined to create one through interpretation. The fix is to build acknowledgment letters into the gift-processing workflow, generated at the point a gift is recorded, rather than as a year-end batch project that risks missing a donor’s filing deadline.

What should I do next?

Start by pulling the acknowledgment template currently in use and checking it against the three required elements for gifts of $250 or more: amount or description, a statement on goods and services, and a good faith value estimate where applicable. If any event in the past twelve months sold tickets or auction items over $75, confirm the quid pro quo disclosure used the correct fair market value, not the organization’s internal cost. If the organization runs a vehicle donation program, verify the Form 1098-C process turns around inside the 30-day window, the step most commonly missed. And if any noncash gift over $5,000 came in recently, check that Form 8283 Part V was signed and that a system exists to catch a disposal inside the three-year Form 8282 window.

Related reading:

• Nonprofit Form 990 filing guide
• Fundraising event tax rules
• Starting a 501(c)(3): the Form 1023 application
• Nonprofit grant management and restricted funds

This guide is general information, not tax advice for your specific situation. Which points apply, and how, depends on your facts.