Year-End Appeal Letter Writer for Nonprofits

Decide who gets the letter before you write a word. Mail the people who already give, then see how far your budget stretches. In M+R's study, each dollar spent mailing active donors brought back $4.51² on average. Mail to lapsed donors returned 90 cents per dollar, and mail to prospects who had never given, 41 cents.

Open with one person, animal or moment from this year, not with your mission or history. Keep it to one. Psychologist Paul Slovic reviews experiments in which people gave far more to help one sick child than a group of eight³. In another study he describes, two named children together drew smaller gifts than either child alone.

Then move from the story to the need, and from the need to the reader. Say what happened, what changed and what still stands in the way, with one number you can check. Write "you" more often than "we." If you have a case for support, take the facts from it so every appeal tells the same story.

Name an amount by the end of the first page, tied to something a gift really pays for: "$75 covers a week of recovery care for one dog." Use only costs your own budget supports. Ask again near the close, then once more in the P.S. for readers who skim.

Set the amounts from what your donors actually give. Find last year's median gift, set the middle of three suggested amounts just above it, and add a blank for any other amount. To print amounts tailored to each donor, the annual appeal letter template has a sheet that works out three per donor from their giving history.

A match is worth having. Economists Dean Karlan and John List mailed appeals to more than 50,000 past donors of one nonprofit, some offering a match and some not. The match raised both the share who gave and the money raised per letter⁴. Bigger ratios added nothing: $3 for every $1 did no better than $1 for $1.

State the terms exactly, since the match is a promise to donors. If the matcher will give the full amount whatever you raise, present it as a pledge others can join: "Our board has pledged $15,000. Will you join them?" Don't suggest that a donor's gift unlocks money that would otherwise be lost.

• Who is matching, by name or as "a group of board members"
• The cap, such as "up to $15,000 in total"
• The deadline, such as "gifts made by December 31"
• What happens to gifts once the cap is reached
• "Doubled" only while the match lasts

The deadline is real for donors who deduct their gifts, since a gift counts in the year it's made. Under IRS Publication 526, a check counts as given on the date it's mailed⁵, and a credit card gift in the year it's charged.

Postmarks are where that date can slip. The Postal Service's mailing standards say a postmark applied at a processing plant may carry a later date than the day the Postal Service received the letter⁶. A hand postmark, free on request at any Post Office counter, shows the day the letter was accepted. Mention it to anyone mailing a check in the last days, or point them to giving online.

One change for 2026 is worth knowing. Starting that tax year, donors who don't itemize can deduct up to $1,000 in cash gifts to eligible charities, or $2,000 on a joint return⁷. Gifts to donor-advised funds don't qualify. In the letter itself, "gifts made by December 31 count for 2026" is enough.

Make the reply card quick to fill in by hand, since it's what comes back with the gift. Print the donor's name and address, repeat the ask as a headline, and list the letter's amounts with a blank for any other. Add a monthly option, a way to give online and a return envelope.

Treat the email as a shorter letter: the same story in a few lines, one ask and one button. Give it a subject line that sounds like a person wrote it. Send each reminder only to people who haven't given, and refresh that list the morning it goes out, so nobody is asked right after giving.

Many gifts arrive in the last days, so line up the thank-yous before they do: the donor thank-you letter writer drafts each one from the gift's details. To start the appeal itself from a draft, the tool at the top of this page writes the letter, reply card and emails from your story.