How do I measure the incremental revenue lift from my loyalty program?
Written by Peko Research Team.Last updated: 09/23/2026.
Updated September 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
Quick facts
- Answer
- 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.
- Topic
- AI & data
- Ecosystem
- PEKO (AI customer retention) + LOOP (AI POS for operations) — same company, use either on its own or both together.
- Updated
- 09/23/2026
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.
Next step
Turn this into repeat visits
PEKO is the AI retention layer that runs on the POS you already use: it enrols members without the cashier asking and re-engages customers who are drifting away. Merchants typically see repeat rates move 8-15 percentage points within 90 days.
Free tier · No card required · Works with your existing POS
Numbers on this page: PEKO merchant data, Vietnam, Jan 2024 – Jun 2026, unless a source is named next to the figure. See the datasets behind these numbers.
The PEKO ecosystem
PEKO and LOOP are two products from the same company. PEKO is the AI retention layer and runs alongside the POS you already use. LOOP is the AI-native POS that covers operations: recipe-level inventory, staff shifts, table plans and the kitchen display. Each works on its own, and run together they share one dataset, so nothing has to be entered twice. See PEKO + LOOP in one ecosystem
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