Most stores have a policy that you can only use one coupon per transaction, so to get the best discount you'll have to split up your purchases. If a store is not busy they are usually happy to ring up the transactions separately at the register, one after another. In other cases you might need to take separate trips or go back in line. Once you figure out what the extra savings will be worth, you can decide whether to go through any extra hassle.
The first thing you need to do is assess the value of each coupon to figure out which is worth the most. That's easy to do when you are comparing coupons like $5 off $25 vs. $10 off $25, but harder when the coupons are in different "flavors".
LOZO recommends first adjusting everything to the equivalent "percentage discount" so you can compare apples to apples.
Then you start by trying to use up the best coupon first. There are a couple of cases when this approach might not be the best strategy for you, so we recommend double-checking before you checkout!
Click on this tip to read more details and see some real examples in action.