Donor Retention Rate

A charity receives gifts from new and repeat supporters, and retention asks how many of an earlier period's donors gave again, which is different from asking how many donors gave in total this year. Blackbaud describes a common annual calculation: repeat donors this year divided by donors from the prior year.

If 2,000 distinct donors gave last year and 1,100 of those gave again this year, retention is 55% on that basis. Keep the original denominator, because new donors who first gave this year do not enter the earlier-year group.

Adding them to the numerator would mix acquisition with retention and can make the result impossible to interpret. Decide too what counts as a gift, since a completed donation, a pledge that has not been paid, a refunded payment and a purchase at a charity shop are not always equivalent, and use a stated rule from the fundraising system.

Match donor identities carefully, because a person may give through several payment methods or change email address. Duplicate records can make one retained donor appear to be two different people, so merge only when the evidence supports it.

Organisations and individuals may be tracked separately, and a corporate foundation can make one large gift while a family gives many small gifts, so the donor count treats each defined entity once and the amounts need separate inspection. Use comparable periods, because a fiscal-year gift compared with a calendar-year gift can create artificial lapses.

For a quarterly view, account for donors who typically give once per year rather than reading three months of silence as permanent loss. Recurring payments need care as well, since one donor who makes twelve monthly gifts is one donor, not twelve retained donors, and a failed or delayed charge around the year boundary may require review.

The rate does not describe gift size, so retention can improve while donation income falls if returning donors give much less, and retained gift dollars or the average gift should be reported separately. Segment first-time donors, because people who gave for the first time last year may behave differently from long-time supporters and an overall rate can hide a weak second-gift conversion problem.

Consider campaign context too, since an emergency appeal may bring many one-time donors with a different intention from regular programme supporters, so compare cohorts rather than assuming one standard retention target applies to all. Do not assume an individual donor's reasons from the metric, because a lapse can reflect a change in finances, preferred cause, communication or data matching.

Acknowledgement and useful updates can support relationships but are not guaranteed fixes, so thank people promptly, explain the work honestly, honour contact preferences and avoid overcontact. Show the base size, since a rate of 55% among 20 earlier donors is much less stable than 55% among 20,000, and remember that acquisition does not always cost a fixed amount more than retention because costs vary by channel and donor group.