1. There are printable CVS coupons: $5/30, $4/20, $2/10, and $2/10 men’s skin care are the current favorites.
2. For most cashiers, you can use the post-tax total. So, if your total only comes to $9.99 before taxes, don’t worry about having to spend that extra penny (good luck finding something that’s only a penny! I’ve found the cheapest filler to be the Charm’s Blow Pops for $0.33 each).
3. You cannot use two coupons with the same code in a transaction, no matter how high your total is.
4. You can stack coupons with different code numbers, but there are stipulations:
   1. You cannot use two of the same type (i.e. 2 $4/20’s) unless your post-tax total comes to twice the amount the coupon is to be used for. For example, you can use 2 $4/20 coupons IF AND ONLY IF they have different code numbers and if your total comes to $40 or more. ($4/20s are the only ones I can find that exist with different codes – however there seems to be a bit of a drought right now and I can only find one at the moment.)
      1. An exception to this would be if you are using two different coupons with two different purposes.  For example:  You should be completely able to use a $2/10 and a $2/10 men’s skin care in the same $10 transaction.  One is for general purchases and the other is for specific purchases.  It’s no different from combining a $/$$ and a CRT coupon found at the end of a receipt.
   2. Your cashier has to be a nice person. There are some cashiers out there that don’t like to give away their products for free. Even though stacking the coupons is completely legitimate.
   3. Again, the code numbers must be different. The cashier can do nothing if the computer won’t accept the coupon.
   4. After using one $/$$ coupon, the new total must be at least as great as the required amount on the second $/$$ coupon. For example, if your total comes to $42, you can use a $4/20 to bring it down to $38 (in order to get away with 2 $4/20s, your original total must be above $40). Then use a $5/30 to bring it down to $33. Then use a differently coded $4/20 to bring it down to $29. Then use a $2/10 and your final total is $27. THEN use your manufacturer coupons.
5. Always give your $/$$ coupons first. After that you can use either your manufacturer coupons or your CRT coupons (found at the end of CVS receipts). Always use your ECBs last. Well, use cash last, if you have to at all!

I can’t think of any more, but if you can, let me know and I’ll update the list. Hope this helps!