Sales Tax Calculator

Tool description

This sales tax calculator helps you estimate the tax amount and total purchase price from a pre-tax price and tax rate. It also supports reverse calculation (when you only know the tax-included total).

How to use

1. Select whether you’re starting from the pre-tax price or the tax-included total.
2. Enter the amount and tax rate (include local taxes if applicable).
3. Click Calculate to see the breakdown and formulas.
4. Use Copy results to save the output for receipts or budgeting.

Why it’s useful

• Estimate final prices while shopping or budgeting.
• Split receipts into pre-tax and tax for reimbursements.
• Compare costs across locations with different tax rates.

Use cases & interpretation

• Budgeting: Use the total to estimate what you’ll actually pay at checkout.
• Expense reports: Use reverse mode to reconstruct the pre-tax amount when only a total is known.
• Price comparison: Keep the pre-tax price constant, vary the rate, and compare totals.

FAQs