Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Sales Tax Calculator
Calculate the sales tax owed on an ecommerce purchase given the pre-tax order amount and the applicable tax rate. Use it for collecting the right tax from customers at checkout, estimating tax liability for a sale, or verifying that your store's tax calculation matches the destination jurisdiction's rate.
Discount Percentage Calculator
Work out what percentage discount you are actually getting when a retailer advertises a dollar saving rather than a percentage off. Enter the original sticker price and the dollar amount you are saving (or have been told you will save), and the calculator returns the implied discount rate. Useful for comparing a "$20 off" deal against a "15% off" deal on differently priced items, for verifying that the discount you see at checkout matches what was advertised, and for spotting inflated "original price" claims that turn modest savings into impressive-sounding percentages.
Key differences
| Sales Tax Calculator | Discount Percentage Calculator | |
|---|---|---|
| Category | Ecommerce | Ecommerce |
| Inputs required | 2 | 2 |
| Result | Sales Tax Amount ($) | Discount Percentage (%) |
| What it does | Calculate the sales tax owed on an ecommerce purchase given the pre-tax order amount and the applicable tax rate. Use it for collecting the right tax from customers at checkout, estimating tax liability for a sale, or verifying that your store's tax calculation matches the destination jurisdiction's rate. | Work out what percentage discount you are actually getting when a retailer advertises a dollar saving rather than a percentage off. Enter the original sticker price and the dollar amount you are saving (or have been told you will save), and the calculator returns the implied discount rate. Useful for comparing a "$20 off" deal against a "15% off" deal on differently priced items, for verifying that the discount you see at checkout matches what was advertised, and for spotting inflated "original price" claims that turn modest savings into impressive-sounding percentages. |