The recommendation: 6 stamps for most washes, 10 for weekly regulars only
A 6-stamp threshold (the 7th wash free) is roughly a 14% discount and pays out inside two to three months for most car wash customers — fast enough to stay motivating without needing a customer to visit unusually often. A 10-stamp threshold (the 11th free) drops the discount to about 9% but takes noticeably longer, which only stays reasonable if your regulars genuinely wash on a near-weekly basis.
This question is closely related to choosing a 5-stamp vs 10-stamp threshold, but the framing here is payout time against a specific visit cadence, which is the more useful lens once you already know roughly how often your regulars come in.
Payout time by visit frequency
The same threshold pays out at very different speeds depending on how often a customer actually returns, which is the real variable that should drive the decision.
| Visit frequency | 6-stamp payout | 10-stamp payout |
|---|---|---|
| Weekly (every 7 days) | ~7 weeks | ~11 weeks |
| Every 10 days | ~9 weeks | ~15 weeks |
| Every 2 weeks | ~14 weeks | ~22 weeks |
| Monthly | ~26 weeks | ~44 weeks |
A concrete example: two washes with different customer bases
A wash near a taxi or delivery-driver hub, where regulars wash every 7-10 days out of necessity, can comfortably run a 10-stamp threshold — the reward still lands within 11-15 weeks, which is a reasonable wait for a customer who's already highly frequent. A residential-area wash where the typical regular comes every two to three weeks should stay at 6 stamps, since 10 stamps would stretch the wait past 20 weeks — five months — which is long enough for many customers to lose track of the card entirely.
Neither wash is wrong to pick its respective threshold; the mistake would be copying a competitor's 10-stamp card without checking whether your own customer base visits often enough to make that threshold pay out in a reasonable window.
- Weekly or near-weekly regulars → 10-stamp threshold pays out in 11-15 weeks, a reasonable wait
- Every-2-to-3-weeks regulars → 6-stamp threshold keeps payout under about 15 weeks
- Monthly regulars → even 6 stamps takes half a year; consider a shorter threshold or a smaller add-on reward
- Mixed customer base → default to 6 stamps, since it serves the slower-visiting segment without punishing the frequent one
The discount trade-off between 6 and 10 stamps
Beyond payout time, the two thresholds also differ meaningfully in cost: 6 stamps (7th free) works out to roughly a 14% discount across the cycle, while 10 stamps (11th free) is closer to 9%. That's a real margin difference — on a 30 SAR wash, the 6-stamp threshold gives away about 30 SAR for every 210 SAR in paid washes, while the 10-stamp threshold gives away the same 30 SAR against 300 SAR in paid washes.
If your margin is tight enough that the 14% rate genuinely concerns you, the better fix is often switching the reward from a full free wash to a cheaper add-on rather than stretching the threshold to 10 and risking the payout-time problem above.
Measuring your own visit cadence before deciding
The customer profile dashboard shows visit history directly, which removes the guesswork from this decision.
- Open the customer profile dashboard
Look at visit intervals for your most active returning customers.
- Find the median gap between visits
Use the middle value, not the average, since a few very frequent or very rare visitors can skew an average.
- Divide 15 weeks by that gap in weeks
That gives a rough stamp count that keeps payout inside a reasonable 15-week window.
- Round to 6 or 10, whichever is closer
Both are common, well-understood thresholds that are easy to explain at the till.
- Revisit after a season
Visit cadence can shift with summer dust events or Ramadan hours, so recheck the median gap periodically.
What stays constant whichever threshold you pick
Neither threshold changes Waya's core mechanics: no POS or till integration, so staff scan the card on an ordinary phone for every stamp, and no SMS channel — the reward-redeemed message lands as a wallet lock-screen notification once the threshold is hit. Free supports a single stamp card at whichever threshold you choose, capped at 100 customers, with Growth and Premium available once the program needs to scale past that.
Frequently asked questions
Is a 6-stamp or 10-stamp threshold better for a car wash?
6 stamps suits most washes, paying out inside two to three months for a typical regular at roughly a 14% discount. 10 stamps drops the discount to about 9% but only stays reasonable if regulars visit on a near-weekly basis.
How long does a 10-stamp card take to pay out for a biweekly customer?
About 22 weeks, or roughly five months, for a customer visiting every two weeks. That's long enough that many customers lose track of the reward, which is why 10 stamps works best for weekly or near-weekly regulars only.
What's the discount difference between 6 and 10 stamps?
6 stamps with the 7th wash free is roughly a 14% discount across the cycle; 10 stamps with the 11th free is roughly 9% — a meaningful margin difference on a high-volume wash.
How does a car wash find its customers' typical visit cadence?
The customer profile dashboard shows visit history for returning customers directly. Taking the median gap between visits gives a reliable basis for choosing a threshold, rather than guessing or copying a competitor's number.
What should a wash do if 6 stamps still feels too costly on margin?
Consider switching the reward from a full free wash to a cheaper add-on, like a free interior vacuum, rather than stretching the threshold to 10 stamps and risking a payout time that's too slow to stay motivating.