The final three days of December are the most predictable fundraising window of the year. You know the dates. You know donors will be giving. And yet a lot of small nonprofits write those emails on December 30, between a holiday party and a database export.
That’s backwards. The last 72 hours of the year deserve more planning than almost any other email you send, and October is the right time to do it. This article walks through why those final days work the way they do, what the emails should actually accomplish, and a simple plan you can build this month.
How much is really riding on the last week
The 2026 M+R Benchmarks Study, which looked at 2025 online giving, found that nonprofits received 37% of their online revenue in December. The last week of the year accounted for 10% of annual online revenue, and the last day alone accounted for 4%.
Put that in terms of your own budget. Imagine a community food pantry that raises $60,000 a year online. If its pattern looks like the benchmark average, about $22,200 comes in during December, about $6,000 in the final week, and about $2,400 on December 31. One day out of 365 is carrying 4% of the pantry’s online year.
Your numbers won’t match the benchmark exactly. Some sectors lean even harder on December, and some lean less. So before you plan anything, pull last year’s online gifts by date. Look at December 29, 30, and 31. That’s your baseline.
Late-December donors have mostly decided already
Most of your emails during the year have to do the hard work of persuasion. They need to make the case, tell the story, and give a reason to act now.
The final days of December work differently. Plenty of people giving on December 31 have already decided they want to give before the year ends. Some are thinking about taxes. Some made a mental note in November and never got around to it. Some planned all along to give to a handful of organizations and are working through the list.
Those donors don’t need a five-paragraph story. They need a reminder, a reason to choose you, and a donation page that works on the first try.
That changes what you should spend your time on. The final emails should be short. Most of your planning effort should go into the things around the emails: who gets them, when they arrive, and what happens after someone clicks.
There’s one more thing working for you: a deadline that’s real. Your organization didn’t invent December 31. For donors who itemize or who want to use the new charitable deduction for non-itemizers starting with 2026 gifts, the calendar year matters. Under the IRS rules in Publication 526, a credit card gift generally counts in the year it’s charged, and a mailed check counts on the date it’s mailed. You can mention the deadline plainly, without manufacturing urgency. (Run any tax wording past your accountant.)
Decide who should not get these emails
The most common mistake in late-December email isn’t bad copy. It’s sending the same three emails to everyone, including people who gave on December 15.
Few things irritate a donor faster than “There’s still time to give!” two weeks after they gave. Some will shrug it off. Some will wonder whether you track anything at all.
Before December, set up your suppression rules:
- Anyone who gave online or by mail since December 1. They get a thank-you, not an ask. If your mail gifts get entered slowly, decide how you’ll handle that gap. A quick note that says “If you’ve already given this month, thank you” helps in the email itself.
- Active monthly donors. Many organizations ask monthly donors for an extra year-end gift, and that can work. But it should be a deliberate choice with its own message, not an accident.
- Major donors you’re talking to personally. If a gift officer is in conversation with someone about a year-end gift, a mass email can step on that conversation.
Then think about the people who should get these emails. Last December’s donors who haven’t given yet this year are your most important group. If you haven’t planned for them already, your year-end appeal starts with last December’s donors.
A simple plan for December 29, 30, and 31
In 2026, December 29 falls on a Tuesday and December 31 on a Thursday. Here’s a sequence a small team can write in October and schedule in early December.
December 29: The reminder. This is the closest of the three to a regular appeal. Remind donors what their gift does, tie it to a specific need, and mention that the year is ending. Keep it to a few short paragraphs. If you have a matching gift, this is where you introduce or repeat it.
December 30: The short note. Shorter than the first. One concrete picture of what a gift does, the deadline, and the link. Some organizations send this from the executive director’s name. That can work well, but only if the executive director has been a real presence in your email during the year.
December 31: The last call. Many organizations send two emails on the final day, one in the morning and one in the afternoon or evening. The morning email can be very brief: the deadline, one sentence about the impact, and a button. If you send a second one, send it only to people who haven’t given since the first, and make it shorter still.
How many emails is too many? There isn’t a universal answer. More sends can raise more money and also cost you subscribers, and the M+R study found nonprofits lost 12% of the email subscribers they started 2025 with to unsubscribes over the year. If your list is small and you rarely email, three or four messages in three days may feel like a lot to your donors. Watch your unsubscribe rate after each send and look at it again in January. Some organizations test this by holding back a random portion of the list from the extra December 31 send and comparing results.
For subject lines, plainer usually beats clever in the final hours. “Midnight tonight” tells the donor everything. If you need ideas, here are hundreds of real holiday-season appeal subject lines to borrow from.
Fix the donation page before you write a word
By December 31, the email has done most of its job once someone clicks. What happens next decides whether you get the gift.
Spend an hour in early December testing your donation experience the way a donor would, on a phone, at 10 p.m.:
- Does the email link go directly to a giving form, or to a general page where the donor has to hunt for a button?
- Does the page load quickly and work without zooming?
- Is the form asking for anything you don’t actually need?
- Do the confirmation page and email arrive right away, with a receipt the donor can save for taxes?
- If you mention a match or a specific need in the email, does the page say the same thing?
Also check who’s on call. If your payment processor or form breaks at 3 p.m. on December 31, who will notice, and do they have the logins to fix it? For a two-person shop, this might mean agreeing that someone checks the form and the gift report a few times that day. It isn’t glamorous, but it protects what may be your biggest online giving day.
What to do this month
Don’t try to write your whole year-end campaign this week. Start with these:
- Pull your online gifts by date for December 29 to 31 of last year, so you know what’s at stake.
- Write down your suppression rules and confirm your database can actually pull those lists.
- Draft the three final emails now, while you have time to think. They should be short enough that this takes an afternoon.
- Put a donation page test and a December 31 on-call plan on the calendar.
When January comes, the work continues. A donor who gives on December 31 is a donor you’ll need to keep, and many year-end donors disappear by March without a good follow-up plan.
If you’d like a structured way to plan the whole season, my workbook, Finish Strong: The 90-Day Year-End Fundraising Plan, walks you through October to December on a 13-week calendar. The worksheets build into a complete year-end plan, and there are AI prompts throughout to help you draft faster.
