Hypothesis
Duration
Timing
Audience
Group split
What this means for you
Keep fee-coverage copy short. 'Cover fees ($X)' beat longer, more explanatory wording, so Bloomerang's making it the new default, and it's worth matching anywhere you've written your own version.
Key results
With the shorter prompt, 70.0% of donors covered fees, compared with 64.0% for the current copy—a 9.53% relative increase. Donation completion rose slightly, while average gift size remained steady.
Segment insights
The experiment included nonprofits across eligible Standard Donation Forms using GiftAssist’s standard prompt. Forms with customized copy and other excluded giving flows weren’t part of the test.
Conclusion
The shorter, more direct prompt increased fee coverage and donation completion without meaningfully changing gift size, making it the stronger-performing variation in this experiment.