Donor economics
Average Gift Size, and What It Hides
A single average sits on top of a lopsided file. Read past it before you trust it.
By Donor Insights · Published August 15, 2026 · Updated August 27, 2026 · 7 min read
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Key takeaways
- Average gift size is a mean: total dollars divided by the number of gifts, and a few large gifts pull it well above the gift a typical donor actually makes.
- The median gift, the one in the middle of the file, is usually far below the mean, and the gap between them is a quick read on how concentrated your giving is.
- A rising average can mask a shrinking base: across the sector, dollars rose 5.0% in 2025, the strongest growth in five years, while the number of donors fell 3.6%, the fifth straight year of decline (Fundraising Effectiveness Project).
- Small gifts lapse first, so as a file loses its smaller donors the average climbs on its own, which means a rising average is sometimes the sign of a file losing people, not gaining ground.
- Donor Insights reads your own giving records to show the median, the full distribution, and the donor count behind the average, so the number does not flatter a file that is quietly leaking.
Average gift size is a mean: your total dollars divided by the number of gifts behind them. On its own it hides more than it tells, because a handful of large gifts pulls it well above what a typical donor gives. The same math means the average can rise even as your file shrinks. Across the sector in 2025, dollars raised rose 5.0%, the strongest growth in five years, while the number of donors fell 3.6%, according to the Fundraising Effectiveness Project. Read the average alone and that looks like a good year. Read the donor count next to it and it looks like a base wearing thin.
What is average gift size, and what does it leave out?
It is the arithmetic mean of your gifts, and it answers the question you actually care about, how big is a typical gift, only when gifts cluster near the middle. On a donor file they almost never do. Most files have many small and mid-size gifts and a short tail of large ones, and that tail drags the mean upward. A one-time online donor gave about $183 across the year in 2025, and the average online gift ran $168 on desktop against $88 on mobile (M+R Benchmarks 2026), but every one of those figures sits on top of a very lopsided distribution where the middle gift is smaller than the mean suggests.
How do a few large gifts skew the average?
They pull the mean away from the median. The median is the middle gift: line every gift up smallest to largest, and the median is the one in the center, the amount half your donors gave more than and half gave less. When a file has even a few outsized gifts, the mean lands well above the median. The mean answers what the whole file adds up to; the median answers what a normal donor does. Consider a small illustrative file of ten gifts.
| Ten gifts, smallest to largest | Measure | Result |
|---|---|---|
| $25, $30, $40, $50, $50, $75, $100, $150, $300, $5,000 | Average (mean) | $582 |
| The same ten gifts | Median (middle gift) | $63 |
One $5,000 gift lifts the average to $582, while nine of the ten donors gave $300 or less and the median gift is just $63. Report only the average and you would picture a file of $582 donors who do not exist. The gap between mean and median is the tell: the wider it runs, the more of your total rides on a few large gifts, which is the same reading you get from donor concentration risk.
Why can a rising average gift hide a shrinking base?
Because the average can go up for a bad reason: you are losing your smaller donors. Overall donor retention held at 43.3% in 2025, up 0.2 points on the topline, and that small rise is itself a mix effect: retention fell inside every donor-size segment but the largest, and the topline improved only because the lowest-retention donors are now a smaller share of the base. Donors fell 3.6% for the fifth year running even as total dollars rose 5.0% (Fundraising Effectiveness Project). When the people who leave are mostly small givers, the gifts left behind are larger on average. The average climbs while the base erodes, and a metric that should sound an alarm reads like good news instead.
“Unadjusted for late data, retention rates declined across all donor segments except Supersize donors.”
Which donors leave first as the average climbs?
The smallest ones. Retention rises with gift size: in 2025, donors who gave $100 or less were retained at 31.3%, donors in the $101 to $500 range at 49.7%, and donors giving $5,000 or more at 66.9%, with $50,000-plus donors at 69.5% (Fundraising Effectiveness Project). Small gifts are the most fragile part of the file, so they lapse fastest, and every one that leaves nudges the average upward. That is why a rising average is sometimes the fever chart of a file losing its people rather than a sign of donors giving more.
| Prior-year giving | Retained to the next year |
|---|---|
| $100 or less | 31.3% |
| $101 to $500 | 49.7% |
| $501 to $5,000 | 61.7% |
| $5,000 to $50,000 | 66.9% |
| $50,000 or more | 69.5% |
What should you track instead of the average alone?
Keep the average, but never read it by itself. Put four numbers beside it:
- 1.The median gift, so you know what a typical donor actually gives, not just what the file sums to.
- 2.The full distribution, giving broken into bands, so you can see how much of your total rides on the largest gifts.
- 3.Donor count and retention by band, so a shrinking base cannot hide behind a rising average.
- 4.New donors acquired, so you can tell whether the file is being refilled or slowly drained.
Those five numbers together tell you whether an average moved because donors gave more or because donors left. Donor Insights reads your own giving records and shows the median, the distribution, and the donor count behind every average, so the headline number cannot flatter a file that is thinning out. For the fuller picture of what each retained donor is worth over time, see our guide to donor lifetime value, and for the small set of numbers that reveal a file's health at a glance, our fundraising KPIs guide.
A worked example: when the average lies
Picture a fictional organization, Harborlight Rescue. The numbers below are illustrative, chosen to show the pattern rather than to stand as a benchmark. In its first year Harborlight has 1,000 donors giving $120,000, an average gift of $120. The next year it loses smaller donors and lands a few larger ones. The donor count falls to 820, but total dollars edge up to $126,000, and the average gift jumps to about $154.
| Measure | Year 1 | Year 2 |
|---|---|---|
| Donors | 1,000 | 820 |
| Total dollars | $120,000 | $126,000 |
| Average gift | $120 | ≈ $154 |
The average gift rose 28% while Harborlight lost 180 donors. Read only the average and the year looks strong; read the donor count and it looks like the file is being carried by fewer, larger gifts, which is exactly the fragile position the sector as a whole has been sliding toward. The methodology behind these distribution and retention views, and the platform that shows them, both start from your own giving records rather than a sector average.
Frequently asked questions
- What is the difference between average gift size and median gift?
- The average is the mean, total dollars divided by the number of gifts, and a few large gifts pull it up. The median is the middle gift, what a typical donor actually gives. The median usually sits well below the mean, and the gap between them shows how concentrated your giving is.
- Why did our average gift go up while revenue stayed flat?
- Often because you lost smaller donors. When small gifts lapse, the gifts left behind are larger on average, so the average climbs even though the base shrank. Across the sector in 2025, dollars rose 5.0% while donors fell 3.6% (Fundraising Effectiveness Project), the same pattern on a large scale.
- Is a higher average gift always good?
- No. A higher average can mean donors gave more, or it can mean your smaller donors left and only larger gifts remain. Read the average next to your donor count, retention by gift band, and new-donor numbers before you decide which is happening.
- What should we track alongside average gift size?
- The median gift, the full gift distribution, donor count and retention by band, and new donors acquired. Together those numbers tell you whether an average moved because donors gave more or because the file is quietly losing people.
Sources
Related articles
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How to Calculate Donor Lifetime Value (and Why the Simple Formula Lies)
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