Donation Acknowledgment Letters: IRS Rules, a Template, and Best Practices

A donation acknowledgment letter does two jobs. It gives your donor what they need for their taxes, and it tells them their gift mattered. Most organizations are good at one of these. The best are good at both.

In our work with nonprofits, we often saw acknowledgment letters that were compliant but cold, or warm but missing key details. We also saw letters that went out weeks late because someone had to build each one by hand. This guide covers the IRS rules, a template you can adapt, and how to make every letter feel personal without adding hours of work. It is general guidance, not tax advice, so check specifics with your accountant.

The IRS written acknowledgment rule

For US donors, the IRS requires a written acknowledgment for any single contribution of $250 or more before the donor can claim a deduction. According to the IRS page on written acknowledgments, the acknowledgment should include:

• The name of the organization
• The amount of a cash contribution
• A description, but not the value, of a non-cash contribution
• A statement that no goods or services were provided in return, if that is the case
• A description and good-faith estimate of the value of any goods or services provided
• A statement about intangible religious benefits, if any were provided
• The $75 quid pro quo rule

If a donor gives more than $75 and receives something in return, such as a dinner ticket, you must provide a written disclosure. According to the IRS page on quid pro quo contributions, it must tell the donor that the deductible amount is limited to the amount given above the value of what they received, and it must give a good-faith estimate of that value.

A worked example. A donor pays $150 for a gala ticket. The meal and entertainment are worth $60. Your disclosure should explain that only $90 is deductible and state the $60 estimate.

The full rules are in IRS Publication 1771. Canadian charities have different requirements. See our guide to CRA donation receipt requirements.

A simple donation acknowledgment letter template

Adapt this to your voice. Bracketed items come from your donor records.

Dear [First name],

Thank you for your gift of [amount] to [fund or campaign] on [date]. Because of you, [one specific sentence about impact].

[Organization name] did not provide any goods or services in exchange for this contribution. [Or: In exchange for your contribution, you received (description), with an estimated value of (amount). The deductible portion of your gift is limited to (amount).]

Please keep this letter for your tax records.

With gratitude,

[Name, title]

[Phone or email where they can reach a real person]

The personal sentence about impact is the part most organizations skip, and it is the part donors remember.

Making your donation acknowledgment letter personal

Compliance is the floor, not the goal. A good letter also:

• Uses the donor's name, not "Dear Friend."
• Names what the gift supports. "Your gift to the Building Campaign" beats "your generous donation."

Shows impact. One specific, concrete sentence.

Arrives quickly. A prompt thank-you makes a real difference to how donors feel about giving again. Read more in our post on donor retention rate benchmarks.

Comes from a person, with a real signature and a way to reply.

Adjust the letter to the donor

Not every donor should receive the same letter:

First-time donors: Welcome them, explain what happens next, and invite them to learn more.

Monthly donors: A warm welcome when they sign up, then impact updates rather than a letter every month, plus one year-end summary.

Major donors: A personal note or phone call from your director or a board member.

Long-time donors: Recognize their loyalty. "This is your fifth year of giving" means a lot.

Event donors: Include the quid pro quo disclosure where required.

Common acknowledgment mistakes

Sending the letter weeks later. The longer the delay, the less the thank-you means.

Missing the "no goods or services" statement. For US gifts of $250 or more, this line matters.

Forgetting the quid pro quo disclosure on event tickets over $75.

Thanking monthly donors with the same email every month. It quickly starts to feel automated.

Getting the donor's name wrong. Keep one clean record per donor so letters are accurate.

Individual acknowledgments vs. year-end summaries

Many organizations send both, and each has a purpose:

Individual acknowledgments go out right after a gift. They thank the donor and, for US gifts of $250 or more, can serve as the written acknowledgment.

Year-end summaries list all of a donor's gifts for the year in one document. Donors, especially monthly donors, find them easier for tax time.

If you send year-end summaries, make sure they include the same required information as individual acknowledgments, and send them early in the new year.

What to automate and what to keep human

Automate: the tax details, the timing, and the delivery. Every donor should receive an accurate acknowledgment right after giving, without anyone on your team having to remember.

Keep human: a short personal note for first-time donors, major gifts, and anyone who has given for many years. A phone call from a board member can mean more than any letter.

When software handles the routine, your team has time for the personal touches that keep donors coming back.

How DonorsBase handles acknowledgments

DonorsBase sends receipts automatically when a donation is made and generates year-end summaries in bulk, in US and CRA formats. Each gift is tied to its campaign or fund, so your letter can say exactly what the donor supported. Donors can also download past receipts anytime through the donor portal, and donors who support several organizations on DonorsBase can find all their receipts in one place.

You can also use email campaigns in DonorsBase to follow up with impact updates later in the year. Because every gift is tied to a campaign or fund, you always know what a donor supported.

Frequently asked questions

When is a donation acknowledgment letter required?

The IRS requires a written acknowledgment for any single contribution of $250 or more.

What is a quid pro quo contribution?

A payment over $75 that is partly a gift and partly for goods or services. It requires a written disclosure.

How quickly should I send an acknowledgment?

As soon as possible. Automated receipts can go out immediately, with personal follow-up for key donors.

Can the acknowledgment be sent by email?

Yes. Email acknowledgments are common, as long as they contain the required information.