Stackable offers let more than one promotion apply to the same transaction. A member might combine a tier multiplier, a category bonus, and a limited-time promotion on a single purchase, with the offer engine resolving the order in which each applies and the total value granted.
Picture a beauty program where a Gold member buys skincare during a double-points event while holding a personal welcome-back offer. All three could fire together. The program decides whether they stack, in what sequence, and up to what ceiling, so a single basket cannot accidentally earn many times its normal value.
For an operator, stacking is a balance between generosity and control. Allowing offers to combine rewards genuine high-value moments and makes the program feel rich, but uncontrolled stacking drains promotional budget and is a favorite target for abuse. The discipline is explicit rules on which offers combine and hard caps on total earn, so the program can be generous by design rather than by accident.
