the store I shop at allows a crt and a coupon to be used in one transaction. It was a manager so if there would have been problems I would think they would not allow it. I then was able to use one coupon per item. This may be a YMMV but I have not had a problem doing this. I cannot use say 2 2/10 crts at the same time unless it is over $20, and I cannot use 2 coupons unless it is over $20 but I used one of each and they had no questions or problems.