How to use this calculator
- Enter your current eligible cart amount and the coupon's minimum spend.
- Enter the dollar amount the coupon takes off.
- See how much more you need, what you would pay, and the effective discount.
Should you add more to qualify?
The calculator compares your current cart with a cart raised exactly to the coupon threshold. It cannot decide whether the extra item is something you actually need.
Check the offer terms
Stores can treat tax, shipping, excluded items, rewards, coupon stacking, and the qualifying subtotal differently. Check the specific offer before checking out.
Frequently asked questions
Is “Spend $50, get $10 off” always 20% off?
It is 20% off at exactly $50. At $60, it is about 16.7% off, and at $100, it is 10% off.
Is it always worth adding an item to qualify?
No. The payment comparison helps with the math, but an added item is only useful if you needed it anyway.
What if the coupon amount is bigger than the cart?
The discount is capped at the purchase amount, so this calculator never shows a negative payment.