Tax-Included / Tax-Excluded Calculator
Calculate tax-inclusive prices, tax-exclusive prices, and tax amounts in either direction, with support for common tax rates and selectable rounding rules. It is helpful for quotes, shopping checks, invoices, and expense review when you need a quick browser-based estimate.
Result
Enter an amount and tax rate to see the result.
What you can do with Tax-Included / Tax-Excluded Calculator
- Calculate tax-included prices from tax-excluded amounts.
- Calculate tax-excluded prices from tax-included amounts.
- Choose floor, round, or ceil for fractional results.
How to use
- Choose the calculation mode, then enter an amount and tax rate.
- Use a preset tax rate when helpful, then choose the rounding method.
- Review or copy the calculated result.
How to read the results
After you enter an amount and tax rate, the main result is shown prominently. In tax-excluded to included mode, that is the tax-included price; in tax-included to excluded mode, it is the tax-excluded price.
The breakdown below lists tax-excluded price, tax amount, tax-included price, tax rate, and the rounding method you selected.
For example, 1,000 tax excluded at 10% with floor rounding shows a tax amount of 100 and a tax-included price of 1,100. Changing the rounding method can change the final yen amount.
Ways to use it
Checking quotes or invoices
Calculate tax-inclusive or tax-exclusive amounts before preparing quotes, invoices, or expense summaries.
Confirming tax-included shopping prices
Convert tax-excluded shelf prices into the amount you will actually pay at checkout.
Reviewing tax amounts for expenses
Break down tax-exclusive, tax-inclusive, and tax amounts when reviewing receipts or expense records.
How input data is handled
- This tool provides a simple estimate. Please check the applicable tax and rounding rules for invoices or accounting use.
- Inputs are saved in this browser. Share URLs include amounts and tax rates, so avoid personal information.
FAQ
- How do I calculate a tax-included price?
- Add the tax amount to the tax-excluded price. For example, 1,000 at 10% tax becomes 1,100.
- How do I calculate a tax-excluded price?
- Divide the tax-included price by 1 plus the tax rate. For example, 1,100 divided by 1.10 is 1,000.
- Can I choose rounding?
- Yes. You can choose floor, round, or ceil.
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