There are two main types of coupons:
1) Manufacturer’s Coupons: You guessed it — these come from the manufacturer of the product! They are accepted at most stores. There are two types of manufacturer’s coupons: paper coupons and E-coupons.
2) Store Coupons: These are only valid at the store where they are issued.
Many stores will allow you to “stack” a manufacturer’s coupon and a store coupon (Target and Walgreens, for example). You can often find great bargains this way!
Also, some stores do not have store coupons, but they will double manufacturer’s coupons up to a certain amount. For example: At my Dillons, manufacturer’s coupons double up to $1. So, if you have a coupon for 50 cents, the store will match it and “double” it with another 50 cents. If your coupon was 70 cents, the store would only match 30 cents (total equals $1).