VAT Calculator
About this tool
Korean VAT is 10% of the net (supply) amount. Net → Total: VAT = net × 0.1 and total = net + VAT, so 1,000,000 won becomes 100,000 VAT and 1,100,000 total.
Total → Net divides back: VAT = total ÷ 11. A 10,000 won item including VAT has 909 won VAT and a 9,091 won net amount — multiplying the total by 10% (1,000 won) is wrong.
Fractions of a won are dropped.
FAQ
Can I just take 10% off the total?
No. The total is 110% of the net amount, so VAT is total ÷ 11.
How are fractions handled?
Dropped, as on most Korean tax invoices.
Exempt items?
VAT-exempt or zero-rated items carry no VAT, so this calculation does not apply.