Sales tax calculator

Total with sales tax = taxable price × (1 + tax rate ÷ 100).

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Sales tax calculator processes your input in this browser. Inputs and results are excluded from analytics. Recent tools save tool names, visit counts and last-visit times. Saved tools store only their names. Draft saving is optional and stays on this device; delete saved text with the draft controls. Loading text from a URL is optional and contacts that server; its URL and your IP address are visible to the server. An optional “Use in” action keeps a handoff in this tab. The next tool removes it on arrival and ignores it if more than a minute has passed.

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Taxable price

Sales tax rate (%)

Answer

…

Total with sales tax = taxable price × (1 + tax rate ÷ 100).

More results

Precision and calculation record

Decimal places in numeric results and text downloads

Rounding changes displayed numbers, not the calculation. Text, fractions, matrices and CSV schedules keep their own formatting. Automatic keeps up to 12 significant digits, with money shown to cents where applicable.

Step-by-step calculation

Inputs are substituted below. Each line evaluates the next operation; intermediate values are displayed to 12 significant digits while the calculation uses full precision.

Saved scenario

Save the current answer, then change an input to compare. This clears when you leave.

Formula and assumptions

Enter the applicable combined rate yourself. No local rates, exemptions, item classifications or jurisdiction rounding rules are inferred.

Automatic precision shows money to two decimal places and other numbers to 12 significant digits. Thousands separators such as 1,000 are accepted; use a dot for decimals.

Scratch calculator

Check another calculation

Use +, −, ×, ÷, parentheses and %. A percentage is divided by 100. This does not change the main tool.

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Updated 2026-09-26

Using Sales tax calculator

Total with sales tax = taxable price × (1 + tax rate ÷ 100).

Enter the applicable combined rate yourself. No local rates, exemptions, item classifications or jurisdiction rounding rules are inferred.

Next: Unit price calculator

A worked example

With taxable price = 100, sales tax rate (%) = 8, the total with sales tax is 108.00 (rounded to two decimal places).

Next: Calculate VAT

Before you use the result

Enter the applicable combined rate yourself. No local rates, exemptions, item classifications or jurisdiction rounding rules are inferred. Calculations keep full browser-number precision. Money amounts are displayed to two decimal places; other results use up to 12 significant digits. Very large values may lose precision.

Example results for taxable price

These examples use Sales tax rate (%): 8. They are reference calculations, not recommended settings.

Taxable price	Total with sales tax
50	54.00
100	108.00
200	216.00

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ToolOctopus. “Sales tax calculator.” Updated 2026-09-26. https://tooloctopus.com/sales-tax-calculator.

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