Discount & Sales Tax Calculator

How this calculation works

Sales tax rates vary dramatically by state and even by county/city within a state. A $100 purchase could cost $108 in Oregon (no tax) or $110.25 in California (7.25% state + local taxes).

When comparing prices across online retailers, always factor in shipping costs and sales tax. Amazon collects sales tax in most states now, which can significantly change the "best" deal.

How this Discount & Sales Tax Calculator works — 2026 guide

A 20% off sticker is only half the story — the price you actually pay also depends on your state's sales tax, and whether the discount applies before or after tax. This 2026 discount and sales tax calculator handles the order of operations the way US states do it: discount first, then sales tax on the discounted price. Example: $120 item, 25% off, 7.25% tax (California) → $90.00 discounted, then $96.53 with tax. Rates vary from 0% (Alaska, Delaware, Montana, New Hampshire, Oregon) to over 10% in some local jurisdictions, so pick your state or enter a custom rate.

How to use it in 3 steps

1. Enter the original price of the item.
2. Enter the discount percentage and your state's sales tax rate (or choose from the list).
3. Read the discounted price, the tax amount, and the true final price — step by step.

Who this is for

Shoppers comparing sale prices, small businesses pricing merchandise, and anyone tired of math at checkout. Read the [final price after discount and tax guide](/blog/how-to-calculate-final-price-after-discount-and-tax/) and the [how sales tax impacts your budget guide](/blog/how-sales-tax-impacts-your-everyday-shopping-budget/) for the full picture.

Data sources & authoritative references

This calculator is built on official U.S. rules and published statistics. Key sources:

• Tax Foundation — State Sales Tax Rates
• Streamlined Sales Tax — State Rate Lookup