How to Use
- Enter amount
Input the net price (before VAT) or gross price (including VAT).
- Select calculation mode
Choose to add VAT to a net price or extract VAT from a gross price.
- View results
See the net price, VAT amount, and total gross price.
What is Value Added Tax (VAT)?
Value Added Tax (VAT) is an indirect tax levied on the value added at each stage of producing and distributing goods or services. Korea's standard rate is 10% and has remained a single rate since its introduction in 1977.
A tax charged at every stage of a transaction
A business pays only the difference between the output tax collected on sales and the input tax borne on purchases. In effect, the real tax burden is passed on to the final consumer, while the business simply collects and reports the tax on the state's behalf.
What you can do with this calculator
- Add VAT to a net price when issuing a tax invoice to obtain the total
- Work backward from a VAT-inclusive payment to separate the net price and the tax (reverse calculation)
- Quickly convert between pre-tax and post-tax amounts for quotes and settlements
Calculation Formula
Adding VAT (net price → total):
VAT = net price × (VAT rate ÷ 100)Total = net price + VAT
e.g. Net price ₩100,000 at 10% → VAT = 100,000 × 0.1 = ₩10,000, total = ₩110,000.
Reverse calculation (total → net price):
Net price = total ÷ (1 + VAT rate ÷ 100)VAT = total − net price
e.g. Total ₩110,000 at 10% → net price = 110,000 ÷ 1.1 = ₩100,000, VAT = ₩10,000. Results are rounded to the nearest won.