Due to the fluidity of activity in any given retail season, it may be difficult to determine a solid number for ROI on your customer loyalty program. However, there are some things you can track to make sure your offers are what your customers want, and therefore effective in bringing them back. Track: sign-up rates, redemption rates, and defection rates. If you keep a close eye on these numbers, you will be able to see what is working and what your customers perceive as valuable, and make changes as necessary.
In order to make sure you’re spending your loyalty marketing dollars efficiently, you have to know how well your program is working. Keeping track of the percentage of customers who use it will give you tons of insight.

