Most grocery stores allow the use of four of the exact same coupons per order. This means, for example, if you have four 50 cents off one Eggo Waffles coupons you can use all four coupons providing you bought four boxes of Eggo Waffles. Each store sets it’s own limit so it’s a good idea to check your store’s policy. If you have extra coupons and something is on sale, go for the max and buy four! As far as my experience goes, there has never been a total limit of coupons allowed to be used per transaction. Just the four “like” coupon limit.