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VAT Calculator — Fixed 10% Rate

Split a VAT-inclusive amount into net amount and tax, or add VAT using a fixed 10% rate and whole-KRW rounding.

Enable JavaScript to use the interactive tool. Instructions and examples are available below.

A LITTLE GUIDANCE

VAT Calculator — Fixed 10% Rate guide

Use this fixed-rate calculator to split transaction amounts, rather than calculate a tax return.

How to use

  1. Choose whether the amount already includes VAT.
  2. Enter an amount as a whole number of Korean won.
  3. Review the net amount, VAT and total.

Worked example

Input
Enter 110,000 KRW as a VAT-inclusive amount.
Result
Net amount is 100,000 KRW, VAT is 10,000 KRW and total is 110,000 KRW.

Common questions

Should I subtract 10% from an inclusive amount?

No. This tool divides the inclusive amount by 1.1 to obtain the net amount before rounding.

How does rounding work?

For inclusive amounts, the net amount is rounded to whole won and tax is the remainder. For exclusive amounts, 10% of the net amount is rounded. This is not a tax-return calculator.