Stacked Double Discount Calculator
- Tooloraa Coupon Sizer

A '20% off plus an extra 10% off' sign is a classic retail tactic, but the true discount is not 30%. Tooloraa's Stacked Double Discount Calculator - Tooloraa Coupon Sizer reveals the true price behind these sequential markdowns. This specialized tool lets you model a stacked discount. You enter the original price, the first discount (say, 20%), and the second discount (the extra 10%). The tool correctly applies them sequentially—the 10% is taken off the already reduced price, not the original. This reveals the true, slightly lower effective discount percentage. The tool can also add sales tax or VAT onto the final discounted price, giving you the exact, all-in 'out-the-door' price. This is a vital tool for serious budgeters, accountants auditing a purchase, and anyone who wants to see the real math behind the marketing. As always, your financial calculations are performed privately and locally in your browser. Unmask the true cost of those tempting offers with Tooloraa's precise Coupon Sizer.