Everything You Need to Know about Donor Acknowledgement Letters

Everything You Need to Know about Donor Acknowledgement Letters

donor acknowledgement letter

When someone feels compelled to support your nonprofit organization, it’s important that you properly acknowledge their generosity with a donor acknowledgment letter.

More than making sure they know how much you appreciate their gift, donors need acknowledgment letters in order for their donation to be tax-deductible. And that letter needs to have the right information. Without it, your donors might be left high and dry–and less willing to support your mission in the future.

In this article, we’ll look at the basics of donor acknowledgment letters: what you need to include, what you should include, and everything in between.

  1. What is a Donor Acknowledgement Letter?
  2. Types of Donations You Need to Send Acknowledgment for
  3. Why Should Nonprofits Acknowledge Donors?
  4. When Should Nonprofits Send Acknowledgement Letters?
  5. Requirements for Donor Acknowledgement Letters
  6. How to Properly Structure a Donor Acknowledgement Letter
  7. Donor Acknowledgement Letter Templates
  8. What Happens If You Don’t Send a Donor Acknowledgement Letter?
  9. Automate Your Donor Acknowledgement Letters

Read on for everything you need to know to make sure your acknowledgment letters check all the right boxes. 


What is a Donor Acknowledgement Letter?

donor acknowledgement letter

Sometimes referred to as a donor thank-you letter or donation receipt, a donor acknowledgment letter is just what it sounds like—a letter that acknowledges the act of a donation. But a good donor acknowledgment letter goes beyond just acknowledging the gift.

These letters are also often used for tax purposes in the case that the donation was given to a nonprofit whose donations are tax-deductible, such as a 501(c) nonprofit.

The right letter should do the following:

  1. Thank your donor for making their gift (you are grateful, after all!). When your donors feel valued, they’re more likely to continue a relationship with your nonprofit.
  2. Provide all the required information about the donation like the amount, the date, the tax status of the gift, and the type of gift (cash, in-kind, stocks, etc.).
  3. Build a lasting relationship with your donor by showing them how their gift directly serves your mission and encouraging them to stay involved with your organization.

Types of Donations You Need to Send Acknowledgment for

donor acknowledgement


1. Cash

This is pretty straightforward—if you receive a donation of liquid money, then you’ve received a cash gift! Regardless of whether you get this contribution through a check, cash, or credit card, “cash” refers to the type of gift and not just the method of giving.


2. In-kind donations

This means instead of getting money, someone donates goods or services to your organization. Usually, large businesses and corporations make these kinds of donations. An example would be a large grocery chain providing your organization with gift cards to purchase materials for a fundraising event.


3. Online donations

When you receive donations through an online donation form on your website or a fundraising page elsewhere, that becomes online donations. Online donations can be generic, for a specific fundraising event, crowdfunding campaigns, peer-to-peer campaigns, text-to-give, and recurring programs.

donor acknowledgement


4. Stock donations

People often donate stock to charities. It is considered more beneficial for the nonprofit and the donor. Since the donation is in stock, the contribution value and tax-deduction both increase up to 20%.


5. Legacy donations

Legacy donations are planned future giving in which the donor leaves a gift in their will for the nonprofit of their choice. It may include a part of one’s property or estate and is made to create a lasting impact.


Why Should Nonprofits Acknowledge Donors?

donor acknowledgement


1. You are legally obligated to

In order for donors to claim contributions of $250 or more, the IRS requires that they must receive a written acknowledgment of their gift.

When you get nonprofit status, one of the huge perks is that donations to your organization are tax-deductible. This is a great incentive for your donors to give to your organization year after year—and it means you need to do everything required to stay in good standing with the IRS and your donors.


2. You want your donor to feel appreciated

Beyond sharing the legal tax-deductible information, it’s vital to acknowledge donors so they don’t have a minute to doubt that their donation was received and appreciated.

Focus on messaging that shows the donor their role in your organization’s mission. How will their donation be used to serve your mission? Donors will be more likely to give again in the future if they can see how their donation is working.

Pro tip: Did you know that 71% of your donors feel more connected with your organization when they receive personalized materials? Personalizing a donor acknowledgment letter is a good way to start a lasting relationship.


When Should Nonprofits Send Acknowledgement Letters?

donation acknowledgement letters

The legal answer: Before January 31st of the year following the year the donation was made. So if you receive a donation on November 23rd, 2021, you technically have until January 31st, 2022 to send an official donor acknowledgment letter.

The practical answer: As soon as possible! You’ll want to send out your acknowledgment letters ASAP for a few reasons:

  1. You don’t want your donor to wonder if their payment went through. Whether they’re giving to your organization online or in person, they want to know that there were no issues with processing and that they were charged for the correct amount.
  2. You want your donor to feel like their gift—and giving in general—is a priority for your organization. If you’re too busy to send an acknowledgment, a donor might think you aren’t running your organization efficiently.
  3. You want to keep up with your donors. More than half of your donors want at least monthly contact, with your Millennial donors wanting twice monthly contact. A donor acknowledgment letter is a great chance for establishing regular contact.

Requirements for Donor Acknowledgement Letters

donation acknowledgement letters

Now that we know how vital it is to acknowledge donors in the right, timely manner, what has to go in an acknowledgment letter for a donation? The IRS requires that all 501(c) nonprofits send letters to acknowledge donations of $250 and over that contain the following information:


1. The full, legal name of the organization and a statement clarifying your nonprofit status.

Although not required by the IRS, some organizations also include their address and their Employer Identification Number (EIN). It’s up to you how much information you put in your letter, but you must clearly state the name of your organization and clarify what kind of nonprofit your organization is—501(c)(3), 501(c)(5), etc.


2. The name of your donor.

This should be the name the donor used to make the gift. If you choose to send physical acknowledgment letters, you may also need to include your donor’s address on the letter to follow proper business letter practice, but this is not required.


3. Date of the donation.

donation acknowledgement letters

Although not required by the IRS, including the date on your acknowledgment letter is a service for your donor. The IRS asks that donors keep records of their donations over $250 like bank statements or credit card statements, but if the donor does not have access to these materials the IRS will accept the donation receipt as evidence of the date.

Pro tip: It can sometimes be tricky to ascertain the date of donation in cases of mailed checks. The best practice is to use the postmarked date for mailed checks. This is especially important around the end of the year when your organization might be getting several checks that you don’t deposit until the following year. You want to be sure your donor gets the tax deduction in the year they intended. Credit card donations are easier—the date of donation is simply the date of the charge!


4. A description of the donation (including amount, sometimes).

If the donation is cash, you should state so and include the amount donated. For non-cash donations, you’ll need to describe the nature of the gift.

In-kind gifts can be tax-deductible for donors, but it is the responsibility of the donor to value the donation. You should still provide an acknowledgment with a description of the goods or services received.

Stock gifts should include both the number of stocks given and the company name. It should not include the fair market value of the stock.

For gifts of property, the physical address/location should be marked on the letter so the IRS can match it with any property appraisals.


5. A statement about whether the donor received any goods or services in return.

If your donor got anything in return like a ticket to your organization’s gala or museum admission, it’s important to say so on the letter and provide a good-faith estimate of the value of whatever goods or services you provided in return for the contribution. If your donor didn’t get anything in return, you still need to include a statement saying so.

You can also include a statement that your donor received intangible religious benefits in return if that’s the case.

Note: Although the IRS doesn’t require you to provide this information for donations under $250, it’s still good practice. You know that donations of every size are helpful to your organization, so you want to make sure donors of every size feel appreciated, too.


How to Properly Structure a Donor Acknowledgement Letter

donation acknowledgement letters

As long as your letter includes all the information listed above, you may format your acknowledgment letter however your organization sees fit. However, keep in mind that your letter is a reflection of your organization—so you want it to reflect you in a good light!

Most organizations choose to send a formal business-style letter. Those kinds of letters have the following features: :

  • Printed on letterhead (or PDF with letterhead). Your letterhead should feature your organization’s logo and address.
  • The date the letter is written and signed. This is on the top left side of the page.
  • The donor’s name and address. This is usually found under the date on the left-hand side of the page.
  • A salutation. The most common choice? “Dear Ms. Donor.” You write “dear” and follow it with your donor’s preferred way of being addressed.
  • One or two brief, clear body paragraphs. The meat of your letter should be where you include the necessary information required by the IRS. This is also your opportunity to show your donor how grateful you are for your gift by including some concrete examples of how their donation can be put to work towards your mission.
  • A valediction. This is your “signing-off” phrase. Most organizations choose “sincerely,” but you can change this depending on the preference of who signs each letter. Other options include “warm regards” or “our many thanks.”
  • Signature. Your donor acknowledgment letters should be signed by an important member of your nonprofit. This can be the development director or even the executive director. It might change depending on if someone in the organization has a stronger relationship with any particular donor. Be sure to include the signer’s title.

This is the most common way to acknowledge donors. You can choose to send your letters through the mail or as an attachment via email. Some organizations have even turned to sending postcards instead of letters, but you should exercise caution with that since you want to protect your donor’s privacy.


Donor Acknowledgement Letter Templates

sample donation acknowledgement letter

Although you’ll of course want to make your acknowledgment letter fit your organization’s needs, here is a downloadable template file with 2 acknowledgment letter templates to get you started that cover your bases for both the IRS requirements and other best-practice inclusions.

Pro tip: When you work up a form letter that you think works for your organization, run it by an attorney who specializes in nonprofit matters. They’ll be able to confirm that you have all the necessary information.


What Happens If You Don’t Send a Donor Acknowledgement Letter?

acknowledgement letter for donation

Simply put, your donor cannot deduct their donation on their taxes. The IRS has refused tax deductions for donors who cannot provide adequate proof. Some cases are even denied based on the timeliness of the acknowledgment or an inadequate amount of information included in the letter.

While there is no penalty to your organization for not providing timely, correct acknowledgment letters, there is a significant negative consequence: you aren’t treating your donors properly.


Automate Your Acknowledgement Letters

The best thing you can do? Automate your acknowledgment letters with your donor management system or nonprofit customer relationship management (CRM) system.

With Donorbox, you can customize your receipt email to fit your needs so no donation goes without being appreciated. This means that once you come up with a form letter that works for your organization, Donorbox can handle the rest and automatically send acknowledgments to your donors. Here’s how it looks on the backend.

acknowledgement letter for donation

Automating this process means you’ll never miss acknowledging a donor. Your donors will appreciate the prompt acknowledgment with all the correct information they need to deduct their donation.

Pro tip: You also need to send a year-end donation receipt with a summary of all gifts a donor has given over the course of the year. This helps your donors when it comes time for them to file their taxes. The good news? Donorbox also automates year-end tax receipts, too, meaning you don’t have to worry about compiling that data yourself. Learn more about Donorbox’s receipt automation here.


Final Thoughts

acknowledgement letter for donation

You know how important donations are to your organization. When someone goes out of their way to support your work, it’s important to provide them with everything they need to feel properly appreciated and to reap all the benefits donating provides them.

By doing the front-end work of making sure your form donor acknowledgment letter has all the necessary info and then automating the actual sending process with Donorbox, you’ll never have to worry that you’ve missed thanking a donor. Use the samples provided in this article as a starting point to craft an acknowledgment letter your donors will be happy to receive.

For more donor management tips, look around the rest of our nonprofit blog.

Donorbox is a powerful fundraising solution having served over 50,000+ organizations across the globe with its advanced features like recurring donation forms, crowdfunding, fundraising pages, peer-to-peer fundraising, Memberships campaigns, and more. Learn more about us on the website.

Lindsey Baker is a writer and nonprofit professional, drawing from her experience working various roles at an art nonprofit. Over the years, she has learned keen administrative and development strategies to make every aspect of a nonprofit's fundraising strategy shine.

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