Free Sales Tax Calculator

Calculate sales tax and total purchase cost.

Estimate the sales tax, final price, and tax amount for a purchase. Enter the price before tax and the applicable sales tax rate.

Sales Tax Calculator

Enter the applicable tax rate from your local tax authority. Choose whether additional fees should be included in the taxable amount, if that matches your local rules.

CurrencyUSD — US DollarBDT — Bangladeshi TakaGBP — British PoundEUR — EuroINR — Indian RupeeCAD — Canadian DollarAUD — Australian DollarPKR — Pakistani RupeeOther / no symbol

Purchase Price Before TaxPrice of the item before sales tax.

Sales Tax Rate (%)Enter the tax rate that applies to your purchase.

Discount Before Tax (optional)Any discount applied before sales tax.

Additional Fees (optional)Fees or charges added to the purchase.

Tax additional fees?No — calculate tax on discounted item price onlyYes — include additional fees in taxable amountChoose the option that matches the rules for your transaction.

Estimated Purchase Cost

Results are estimates based on the values you entered.

Price After Discount

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Sales Tax Amount

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Additional Fees

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Total Purchase Cost

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Important: This calculator provides an estimate using the single tax rate you enter. Tax rules differ by country and locality, including which products, discounts, and fees are taxable. Confirm the correct rate and taxable amount with your local tax authority. This tool does not automatically look up local rates, exemptions, or multiple combined taxes.

How to Use the Free Sales Tax Calculator

• Select the currency for displaying the results.
• Enter the purchase price before tax.
• Enter the sales tax rate as a percentage.
• Add a discount if it reduces the price before tax.
• Enter additional fees, if applicable, and choose whether those fees are taxable under your local rules.
• Select Calculate Sales Tax to see the tax amount and estimated final cost.
• Use Clear All to reset the fields and start a new calculation.

What Is a Sales Tax Calculator?

A sales tax calculator estimates the tax added to a purchase and the total amount you may pay at checkout. It is useful when planning a purchase, comparing prices, or working out how much of the final bill is tax.

This calculator is designed for international use: you enter the tax rate that applies to your purchase and choose whether additional fees are taxable. It does not automatically detect your location or retrieve current tax rules. For the closest estimate, confirm the rate, discount treatment, and taxable fees with your local tax authority or seller.

Frequently Asked Questions

How is sales tax calculated?

Sales tax is calculated by multiplying the discounted purchase price by the percentage rate you enter. If you choose to tax additional fees, those fees are included in the taxable amount.

Does the discount reduce sales tax?

This calculator assumes the discount is applied before sales tax. Some transactions may have different discount or tax rules, so confirm the treatment that applies to your purchase.

What does total purchase cost include?

The total includes the price after discount, estimated sales tax, and any additional fees you enter.

Can I use this calculator in any country?

You can use it in any country if you know the applicable rate and taxable amount. It does not automatically look up location-specific rates, exemptions, or combined taxes.

Are the results official tax advice?

No. The results are estimates for planning and may not reflect all local tax rules, exemptions, or fees.