# Percent Off Calculator

> Percent off calculator: stack multiple discounts, apply a coupon, then add sales tax to see the true final price. Free, private, runs in your browser.

- **Canonical URL:** https://boringtoolskit.com/discount-percent-off-calculator/
- **Category:** Seller & Business
- **Evidence level:** authored-methodology
- **Reviewed:** July 2026
- **Last verified:** 2026-09-20
- **Privacy:** Inputs and results stay in this browser unless the page clearly labels an external request.

## How it works

After first discount = original price × (1 − first rate ÷ 100). After second discount = first result × (1 − second rate ÷ 100). Pre-tax final = max(0, second result − coupon). Tax = pre-tax final × tax rate ÷ 100.

## Worked example

A $200 item discounted 20%, then 10%, with a $5 coupon becomes $139 before tax. At 8% tax, the checkout total is $150.12 and effective pre-tax savings are 30.5%.

## Assumptions

- Percentage discounts are applied sequentially rather than added together.
- The fixed coupon is applied after percentage discounts and cannot make the price negative.
- Tax is an editable estimate; taxable bases and local rules can differ.

## Common questions

### How do you calculate stacked discounts?

Apply the first percentage discount to the original price, then apply the second percentage to the reduced price. Do not add the percentages together.

### Is a coupon applied before or after the discounts?

This calculator subtracts the coupon after discount 1 and discount 2 have been applied, then calculates tax on the resulting amount.

### How do you calculate sale price with tax?

Apply both percentage discounts in sequence, subtract the coupon, then multiply the remaining amount by one plus the tax rate.

## Related tools

- /percentage-calc/
- /profit-margin-markup-calculator/
- /sales-tax-vat-calculator/

## Sources

- [Calculator methodology and reference cases](https://boringtoolskit.com/methodology/)

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