Answers / AI & data
How do I measure the incremental revenue lift from my loyalty program?
Written by PEKO Team.Last updated: 05/21/2026.
Compare loyalty members to a matched non-member control cohort over 90 days, controlling for first-visit date and order size. The delta in visits and AOV is the true incremental lift. Most operators overstate impact 2–3× by counting all member sales as 'driven' by the program.
Published: 05/09/2026
The trap: counting every loyalty-tagged sale as 'driven by the program'. Most of those guests would have come anyway. True incrementality requires a control group — either matched non-members or a holdout split.
Practical method: pull all members who joined in month X. Pull a same-size control group of guests with similar first-visit behaviour who didn't join. Compare visit count and AOV at days 30, 60, 90. The delta is your incremental lift. Multiply by gross margin to get incremental profit. Divide by program cost — that's true ROI.
Match on first-visit week and ticket size
These two variables explain 70%+ of return-visit propensity. Matching on them strips out most selection bias.
Measure at days 30, 60, 90
30-day lift can be a sign-up sugar high. 90-day lift is the durable signal.
FAQ
Can I just use a holdout split instead?
Yes — even cleaner. Randomly suppress loyalty for 10% of new sign-ups, then compare. Few platforms support this natively; PEKO does.
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