Japan Consumption Tax

Convert between tax-exclusive and tax-inclusive amounts, and choose the rounding method for calculated tax.

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Calculation basis and official references

Reviewed on:

Formula basis

For a net amount, tax = amount × rate. For a gross amount, tax = amount × rate ÷ (1 + rate). The selected floor, half-up, or ceiling rule is applied to tax.

Calculation method

This calculator treats the entered amount as tax-exclusive or tax-inclusive and separates the net price, Japan consumption tax, and gross price at the selected rate.

Exclusions and checks required

  • It does not decide whether a transaction is taxable, exempt, outside scope, or eligible for Japan’s reduced rate.
  • It does not calculate a business’s return liability, input-tax credit, invoice-system treatment, or invoice-level rounding.

Example input:：10% tax on a tax-exclusive amount of JPY 10,000

basis
Tax-exclusive
amountYen
10000
ratePercent
10
rounding
Round down

This is a one-transaction price split; it does not determine the transaction’s legal classification or the tax payable on a return.

Official references

FAQ

Who is this calculator for? Japan Consumption Tax

Convert between tax-exclusive and tax-inclusive amounts, and choose the rounding method for calculated tax.

What values should I enter?

Applies to: Japan Consumption and Asset Taxes / Net input: tax = amount × rate; Gross input: tax = gross amount × rate ÷ (1 + rate)

How should I interpret this estimate?

This calculator treats the entered amount as tax-exclusive or tax-inclusive and separates the net price, Japan consumption tax, and gross price at the selected rate.

How to use

  1. Enter your input values and press Calculate.
  2. Review the result and compare it with expected context.
  3. For a net amount, tax = amount × rate. For a gross amount, tax = amount × rate ÷ (1 + rate). The selected floor, half-up, or ceiling rule is applied to tax.

Official references