How long the card should be, why a head start works, and what to put on it. Written for independent coffee shops, from running the numbers on real cards.
Most punch cards fail the same way. The shop picks a round number, prints it, and watches almost nobody get to the end. The card was not too generous or too stingy. It was too long to feel possible, and it started at zero.
Decide what the free thing is first, in your own words. "Any handcrafted drink" is a reward. "A free item" is a coupon nobody pictures. The wording goes on every surface a customer sees, so it should be the wording you would say out loud across the counter.
Then the length falls out of it. The card has to be long enough that the visits before the reward pay for the reward, at your own ticket. If a free drink costs you the price of a drink, the card needs enough paid visits to cover it and leave the visit worth having. Shorter than that and you are running a discount. Much longer and the customer does the arithmetic, decides it is not happening, and the card does nothing at all.
Twelve stamps is the default we use, and it holds up for a normal drink at a normal ticket. A genuinely expensive reward wants a longer card. A cheap one wants a shorter one. The number is yours; what matters is that you can say why it is that number.
A card that looks begun gets finished far more often than an identical card that looks untouched. This is not a trick anyone invented for coffee. It comes from research on loyalty cards where two groups were given cards needing the same number of purchases, and the group whose card arrived with some already filled finished at a noticeably higher rate. Same work, different starting line.
So a twelve stamp card that opens at two of twelve beats a ten stamp card that opens at zero, even though the customer buys the same ten drinks either way. The gap is entirely in how it feels on the first day.
The head start only works if you say why. Two stamps that appear with no explanation read as a glitch or a rounding error. Two stamps with "two on the house for joining" printed beside them read as a gift, and a gift is what starts the effect. If your system will not let you write the reason, write it on the card by hand.
The card is measuring visits, because visits are the thing you want more of. A customer buying four coffees for the office is one visit. Stamping per item turns the card into a volume discount and quietly shortens every card by an unpredictable amount.
It also closes the obvious hole. Per item stamping means a group order fills a card in one morning, and the person who comes in every day for a month gets less than the person who came once with a list.
Whatever you use to stamp, there should be a minimum time between one stamp and the next for the same person. A few hours is enough. Without it, one customer and one distracted barista can fill a card in an afternoon, and it will happen by accident long before anyone does it on purpose.
The same applies to a redemption. The visit where a card fills should not also be the visit where the reward is taken, unless you mean it to be.
What to leave off: expiry dates you will not enforce, terms nobody reads, and any rule that requires a barista to make a judgment call at the register.
A punch card is a reason to come back, not a reason to spend more. Shops that treat it as a discount lengthen the card until the reward is nearly free to give, and the card stops being worth carrying. Shops that treat it as a habit keep it short enough to finish and let the repeat visits be the point.
The people who never finish a card still came in more often than they would have. That is most of the return, and it does not show up in the count of redeemed rewards.
Long enough that the paid visits cover the reward at your own ticket, and short enough that a regular can picture finishing it. Twelve with two given at signup is our default for a normal drink. Set it against what the reward actually costs you rather than against a round number.
No. A card that looks begun gets finished far more often than an identical card that starts empty, and the effect only holds when the customer is told why they have the head start. Two on the house for joining, said out loud, beats two that appear with no explanation.
Per visit. The card exists to bring people back, so it should measure visits. Stamping per item turns it into a volume discount and lets one group order fill a card in a single morning.
A minimum gap between stamps for the same person, a cap on stamps per day, and a rule that the barista holds the card at the moment of purchase. Most abuse is accidental rather than deliberate, and a few hours between stamps prevents nearly all of it.
We are myReturners. We run the whole thing for independent coffee shops: the signup, the card, the emails and one campaign a month the owner approves. The numbers on this page are the settings we actually ship with, not projections.