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 23.58% 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
+2.8 points above the 23.58% global average
Why Reverse Tax Calculation Matters
Receipts and invoices usually show only the tax-included total, so separating revenue from tax collected — for bookkeeping or cross-border comparisons — means working backward from that total. Dividing by (1 + rate) isn't the same as subtracting the rate, which is why selecting "Reverse" in the purchase-mode calculator above handles 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
Extracting VAT from a receipt total (reverse)
A receipt shows a ₩1,499.00 tax-included total in South Korea at 10%:
- Pre-tax price: ₩1,499.00 ÷ (1 + 10%) = ₩1,362.73
- VAT: ₩1,499.00 − ₩1,362.73 = ₩136.27
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
Methodology: headline VAT/GST and corporate rates are sourced from the OECD Corporate Income Tax Rates Database and Tax Foundation's global rate tables for 2026; figures reflect the national statutory rate and do not include sub-national, sector-specific, or temporary rate variations unless noted in the text above. Tax rates change through national budgets — always confirm current figures with a qualified local tax advisor before making business or relocation decisions.
Rates last verified for 2026. This tool is for estimation and educational purposes only and is not tax, legal, or accounting advice.
Jordan Hayes
Verified AuthorPersonal Finance Content Strategist
Jordan is a personal finance content strategist with 9+ years writing about mortgages, retirement, tax strategy, and budgeting. Every guide is cross-referenced with IRS publications, Federal Reserve data, and CFPB guidance to make complex calculations accessible. Editor at CalculatorApp.me.
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Tax-rate data, review & limitations
Jurisdiction: South Korea. Effective date: January 1, 2026. Reviewed by CalculatorApp.me editorial staff on July 26, 2026; next scheduled review: October 26, 2026.
Rates are reference estimates, not tax advice. Local rules, exemptions, filing status, and effective dates can change the amount due.
Primary sources
- OECD Tax Database
- Tax Foundation corporate-tax and VAT datasets
- Applicable national revenue authority guidance