This calculator adds a tax rate to the base subtotal and shows the total charged after tax.

Tax amount: $9.60
Total with tax: $129.60
Tax rate: 8.0%

Subtotal
$120.00

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Tax

Sales Tax Calculator

Use this when you need a quick pre-tax versus after-tax total for an order or invoice.

This calculator keeps tax math simple so sellers and contractors can see the tax amount and full billed total without opening a spreadsheet.

How to use this page

Start with your best current estimate, adjust the inputs until the result feels realistic, and use the related tools below when you want to pressure-test price, profit, or payout from another angle.

Add a tax rate to a pre-tax amount and see the tax collected and total charged.

Use the calculator with the examples below to test ideas quickly and come back to the same setup later.

Worked examples

Start from a realistic scenario

Each example opens the same calculator with shareable URL state.

Retail tax estimate

A quick tax amount and total charged estimate.

$9.60tax amount

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FAQ

Quick answers

Short answers for the questions that usually come up first.

Does this handle location-specific tax rules?

No. It is a simple rate-based calculator designed for quick estimates, not jurisdiction-specific compliance.

Can I use this with a percentage from my billing system?

Yes. Enter the same rate you expect to apply and the calculator will show the amount added to the subtotal.