unless either coupon prohibits it, here is part of Targets coupon policy...I have family who works for them and a lot of people try and use 2 coupons for an item and 1 will say its not allowed;
When accepting coupons, we use the following guidelines:
• We accept two kinds of coupons: Target-issued coupons and manufacturer-issued.
• We'll accept one Target coupon and one manufacturer coupon for the same item, unless either coupon prohibits it.
• Coupon amount may be reduced if it exceeds the value of the item after other discounts or coupons are applied.
• We can't give cash back if the face value of a coupon is greater than the purchase value of the item.
• We can't accept coupons from other retailers, or coupons for products not carried in our stores.
• All valid coupons should be presented to the cashier while you're checking out.