Sales Tax Calculatorv1.0.0

Enter any two values to calculate the third. Use this sales tax calculator to find the before-tax price, sales tax rate, or after-tax price with accurate results for shopping, invoicing, and compliance.

• Enter the Before Tax Price and Sales Tax Rate to calculate the After Tax Price.
• Enter the After Tax Price and Sales Tax Rate to calculate the Before Tax Price for reverse sales tax.
• Enter the Before Tax Price and After Tax Price to calculate the Sales Tax Rate.

Use common formats. Type dollar amounts with or without a dollar sign. Type tax rates as percentages or decimals. Type simple fractions if needed. Click Calculate to update results or edit any field to recalculate automatically.

Formulas used
After Tax Price = Before Tax Price × (1 + Tax Rate ÷ 100)
Before Tax Price = After Tax Price ÷ (1 + Tax Rate ÷ 100)
Sales Tax Rate = ((After Tax Price − Before Tax Price) ÷ Before Tax Price) × 100

Verify taxes, set correct prices, and document totals with a fast and reliable sales tax calculator that supports shoppers, retailers, bookkeepers, and online sellers.

• Confirm total cost at checkout by calculating after-tax price from a listed price and tax rate.
• Reverse sales tax on receipts to recover the before-tax price for reimbursements or expense reports.
• Build tax-inclusive price lists by converting base prices to final prices for each tax jurisdiction.
• Validate invoices by comparing stated tax amounts with computed figures for audit readiness.
• Estimate cross-state or provincial purchases by testing different sales tax rates.
• Prepare ecommerce pricing by toggling between tax-exclusive and tax-inclusive displays.

Reduce mistakes, standardize calculations, and speed up everyday pricing and accounting tasks.

Plan a $100 purchase with a 7.5 percent rate. Enter 100 for the Before Tax Price and 7.5 percent for the Sales Tax Rate. Calculate to see a $7.50 Sales Tax Amount and a $107.50 After Tax Price. Reverse a receipt that shows $215.90 paid at 8.25 percent. Enter 215.90 for the After Tax Price and 8.25 percent for the Sales Tax Rate. Calculate to see the Before Tax Price and tax amount. Estimate a target shelf price. Enter your desired After Tax Price and your local tax rate to find the required Before Tax Price.

What is a sales tax calculator? A sales tax calculator computes the tax amount and the total price based on an item price and a tax rate. It can also reverse sales tax to find the price before tax or to infer the tax rate from two known values.

How precise are the results? The tool uses standard sales tax formulas and formats currency to two decimals for display while keeping precise internal calculations. Results match typical point of sale rounding in most cases.

Can I enter percentages or decimals? Yes. Enter 7.5 percent as “7.5%” or “0.075,” and the calculator interprets it correctly. Enter dollar amounts with or without a dollar sign.

Does this handle different regions? Yes. Enter any tax rate to model state, provincial, or local taxes. Always verify the current rate for your location.

This tool is intended for informational and educational purposes only. It does not provide financial, investment, or tax advice. The amounts and payments shown are estimates and may not reflect actual figures. Results are not guaranteed and may vary based on individual circumstances. Always consult a qualified financial advisor before making any financial decisions.