Stamp Card: What It Is and How Points Do the Same Job

By Alva Chew · Updated 2026-11-01

Definition A stamp card is a loyalty card that gives the customer one stamp per visit or qualifying item and a reward after a set number, such as a free coffee after nine paid ones. It is easy to explain but rewards a US$4 order and a US$40 order the same. A points program can match the same reward for a single product while also scaling with what the customer spends.

What is a stamp card?

A stamp card is a loyalty card that counts visits or items. Each time the customer buys something that qualifies, they get a stamp, a punch or a sticker. When the card is full, they get a reward, and a new card starts. “Buy nine coffees, get the tenth free” is the classic version.

Stamp cards come on paper or on a phone. A digital stamp card works the same way, except staff scan a code instead of pressing an ink stamp.

What does research say about stamp cards?

Two well-known studies looked at how people behave as a card fills up.

At a Columbia University café, members bought coffee about 20% more often as they got close to a free drink. A 12-stamp card with 2 bonus stamps was completed in 12.7 days on average, against 15.6 days for a plain 10-stamp card.
At a car wash, a 10-stamp card with 2 stamps already filled was completed 34% of the time, against 19% for a blank 8-stamp card needing the same 8 purchases.

Sources: Kivetz, Urminsky and Zheng, Journal of Marketing Research, 2006. Nunes and Drèze, Journal of Consumer Research, 2006.

The lesson is about distance to the reward, not about stamps. Customers try harder when the reward feels close and when they feel they have a head start. Any program can use that.

Where does a stamp card fall short?

Question	Stamp card	Points program
Does a bigger order earn more?	No, one stamp each time	Yes, points follow spend
Can you give a head start?	Pre-filled stamps	Welcome bonus points
Works across a varied menu?	Only with rules per item	Yes, one earn rate
Can the reward be money off?	Usually a fixed free item	Yes, any amount
Is the balance easy to read?	Count the stamps	Shown in points and dollars

The main gap is fairness across bill sizes. A customer who buys one US$4 drink and a customer who buys a US$40 family order each get one stamp. Owners often patch this with rules such as “one stamp per drink” or “food does not count”, which staff must remember during a rush.

How does a points program do the same job?

A points-based loyalty program can reproduce a stamp card exactly for your main product, then keep going where the stamp card stops.

Take a café whose coffee costs US$5. Give 2 points per US$1, so each coffee earns 10 points. Set a free coffee at 90 points.

Order	Spend	Points earned	Coffees to a free one
One coffee	US$5	10	9, the same as a stamp card
Coffee and pastry	US$9	18	Fewer than 5 visits
Office order of six coffees	US$30	60	Close to a free coffee in one visit

The coffee-only regular sees the familiar deal. The customer who adds a pastry reaches the reward faster, and the office order is rewarded for its size. For the pre-filled effect from the research, add 20 welcome points at sign-up. The earn rate page shows how to set these numbers.

What changes for staff?

On a stamp card, staff decide what counts. With points, staff enter the bill amount and the digital loyalty card updates. There is one rule to remember instead of a list of exceptions.

How Gimify handles this

Gimify is a points program. Points follow the purchase amount at the earn rate you set, and members carry the balance on a Google Wallet card.

Questions owners ask

How does a stamp card work?

The customer gets one stamp, punch or sticker each time they buy a qualifying item or visit. When the card is full, usually after 8 to 10 stamps, they get a reward such as a free drink, and a new card starts.

What is a digital stamp card?

The same idea kept on a phone instead of paper. Staff scan a code to add a stamp, and the card shows how many are left. It removes lost cards, but keeps the one-stamp-per-visit rule.

Can a points program copy a stamp card?

Yes. If a coffee costs US$5 and you give 2 points per US$1, each coffee earns 10 points. Set the free coffee at 90 points and the customer gets the 10th coffee free, just as on a stamp card, while a larger order earns more.

Why do stamp cards with pre-filled stamps work?

Customers feel closer to the reward. In a 2006 study, a 10-stamp card with 2 stamps already filled was completed more often than a blank 8-stamp card needing the same number of purchases. A points program gets the same effect with a welcome bonus.