Kensington Fundraising Group
Free tool

Donor retention rate calculator.

See your donor retention rate in seconds, and what keeping a few more donors would be worth.

Updated Nov. 9, 2026 · Kensington Fundraising Group · 3-minute read

How it works

  • Retention rate = donors from last year who gave again this year ÷ all of last year's donors.
  • Enter your own numbers below. Nothing you type is sent anywhere.
  • Track new and repeat donors separately; their rates are very different.

Calculate your retention rate

The default numbers are an example only. Replace them with your own.

How to read your result

Compare your rate with your own past years first; that trend matters more than any benchmark. For sector-wide figures, see our charitable giving statistics and donor retention guide. Measure separately for first-time donors and repeat donors, because first-time donors are far less likely to give again.

Ways to improve retention

  • Thank new donors within days; a thank-you call stands out.
  • Ask for the second gift within the first year.
  • Invite regular donors to give monthly.
  • Reach out to lapsed donors before they've been gone for years.

How KFG helps

Kensington Fundraising Group's thank-you, renewal and reactivation calls are built to lift retention, with respectful, no-pressure conversations in English and Spanish.

FAQ

Frequently asked questions

How do you calculate donor retention rate?
Divide the number of last year's donors who gave again this year by the total number of last year's donors, then multiply by 100. For example, 420 of 1,000 is 42%.
Should new and repeat donors be measured separately?
Yes. First-time donors give again at much lower rates than repeat donors, so a single blended number can hide problems.
Does this calculator store my numbers?
No. The calculation runs in your browser, and nothing you type is sent or saved.
Talk to us

Let's start more donor conversations.

Book a 30-minute call or send us a note. We'll talk through your goals, your supporters and whether an outreach team is the right fit.

  • See how we'd approach your donor database
  • Talk through the campaigns that fit your goals
  • No commitment — just a straight conversation
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