Coupon Stacking Calculator: Final Price with Multiple Coupons
Free tool · Updated October 2, 2026 · By CouponTalk
Your result
Enter your measurements to see your result.
Quick answer
Percentage coupons multiply, they do not add: 20% + 10% + 5% off is a 31.6% total discount, not 35%. When a flat ₹ coupon and a % coupon combine, applying the % first and the flat coupon last gives you a lower price, but the site decides the order.
How to use this calculator
- Enter the price before coupons.
- Add each percentage coupon and flat coupon.
- Compare the two orders of applying them.
Formula
% coupons multiply: Price × (1 − c1) × (1 − c2) × (1 − c3)
Flat coupons subtract. Applying % first and flat last gives the lowest price.
Results are estimates to help you plan. Confirm the final price, tax and offer terms at checkout.
Frequently asked questions
Can I use two coupons on one order?
Some sites allow a store coupon plus a bank or app coupon, but most allow only one promo code. Check the offer terms.
Why is 20% + 10% not 30% off?
The second coupon applies to the already-reduced price: ₹1,000 → ₹800 → ₹720, which is 28% off.
Related calculators
Latest from the blog
View all blogs →
Guide
Which Helmet Is ISI Certified and Safe Under Rs. 2000?
Guide
Best Helmet Brands in India: Vega vs Steelbird vs Studds
Guide
Best 7 Solar Geysers for Indian Homes (300L Buyer’s Guide)
Guide
Top 10 Solar Garden Lights for Indian Homes 2026
Guide
5 Types of Solar Collectors: Flat-Plate, Evacuated Tube, and Concentrating
Guide
Types of Solar Panels in India: Region-Specific Buying Guide
