Korean 3.3% Freelance Withholding Tax Calculator
Convert gross contract amounts to net pay at Korea's 3.3% withholding rate
A calculator for anyone subject to South Korea's business-income withholding tax (3% income tax plus 0.3% local income tax) — freelancers, instructors, writers, and other independent contractors. Enter a gross contract amount to see exactly what lands in your bank account, or work backward: name the net amount you want and it computes the gross figure your contract needs to specify. Everything is calculated in your browser, so the amounts you enter never reach a server.
도구를 불러오는 중…
🔒 Everything runs 100% in your browser. Your files and input are never uploaded to any server.
How to use
- Pick your calculation direction with the tabs: "Gross ➔ Net pay" or "Target net pay ➔ Gross contract amount".
- For the forward direction, enter the gross contract income; for the reverse, enter the net amount you want to receive.
- Check the result card for your net pay (or the required gross amount), along with the breakdown of the 3% income tax and 0.3% local income tax.
- Use the copy button to grab the summary and paste it into contract notes or a chat message.
FAQ
- What exactly is the 3.3%?
- It's South Korea's withholding rate on freelance and independent business income: 3% income tax plus a 0.3% local income tax (10% of the income tax). It works as a prepayment — the final amount gets settled when you file your annual comprehensive income tax return.
- Why doesn't the reverse calculation land on a round number?
- The gross figure is derived by dividing by 0.967 and rounding, which can leave a small rounding difference at the won level. Treat the calculated amount as a reference figure when drafting a contract.
- Are the amounts I enter saved or transmitted?
- No. Calculations happen entirely in your browser — nothing is sent to or stored on a server.