South Korea Tax Calculator (2026) — Add or Reverse Tax
South Korea charges a 10% VAT, a 26.4% corporate tax rate, and a 45% top personal income tax rate.
How to use this calculator:
- Purchase mode — add VAT to a pre-tax price, or reverse a tax-included total to find the pre-tax price and exact tax paid.
- Profit / salary modes — enter an amount to see the corporate tax owed or a ceiling estimate of personal tax at the top marginal rate.
Understanding South Korea's Tax System
South Korea levies VAT at a standard rate of 10%. Its statutory corporate income tax rate is 26.4%, above the 23.37% global average. The top personal income tax rate is 45%.
Local income tax raises the effective top personal rate to 49.5%.
Region
Asia
VAT rate
10%
vs. world average corporate rate
+3.0 points above the 23.37% global average
Why Reverse Tax Calculation Matters
Receipts and invoices usually show only the tax-included total — not the pre-tax price. Reversing the calculation matters for bookkeeping, expense claims, and cross-border price comparisons. Because dividing by (1 + rate) isn't the same as simply subtracting the rate, doing this by hand is a common source of errors — select "Reverse" in the purchase-mode calculator above to handle it exactly.
History & Context
South Korea applies a progressive corporate tax structure — from 10% on the first ₩200 million of taxable income up to 25% above ₩300 billion — rather than a single flat corporate rate, meaning the effective rate a company pays depends heavily on its size and profitability.
On top of national corporate tax, South Korea layers a separate local income tax generally equal to 10% of the national corporate tax due — a structure similar to Japan's local inhabitant taxes, meaning the effective total corporate burden runs above the headline national rate alone.
Business Use Case
A large South Korean conglomerate (chaebol) subsidiary with over ₩300 billion in taxable income pays the top 25% national bracket plus the additional local income tax layered on top — while a small business with under ₩200 million in income pays just 10% nationally, a far more progressive corporate structure than most flat-rate systems.
Real-World Examples
VAT on a purchase
A ₩1,000.00 purchase in South Korea at 10%:
- Tax: ₩1,000.00 × 10% = ₩100.00
- Total: ₩1,100.00
Corporate tax on profit
₩1,000.00 in company profit in South Korea at 26.4%:
- Tax: ₩1,000.00 × 26.4% = ₩264.00
- After-tax profit: ₩736.00
Frequently Asked Questions — South Korea Taxes
What is the VAT rate in South Korea?▾
What is the corporate tax rate in South Korea?▾
What is the top personal income tax rate in South Korea?▾
How is tax calculated on a purchase in South Korea?▾
How do I reverse South Korea's VAT to find the price before tax?▾
References & Sources
Rates last verified for 2026. Tax rates change through national budgets — always confirm current figures with a qualified local tax advisor before making business or relocation decisions. This tool is for estimation and educational purposes only and is not tax, legal, or accounting advice.
Jordan Hayes
Verified AuthorLead Content Editor & Personal Finance Specialist
Jordan Hayes is a personal finance content strategist with 9+ years building educational finance and health resources. He has written and fact-checked over 200 personal finance guides covering mortgage amortization, retirement planning, tax strategy, and budgeting. His work applies IRS publications, Federal Reserve data, and peer-reviewed research to make complex calculations accessible.