Freelancer 3.3% Withholding Tax Calculator
Convert between pre-tax pay and net income at Korea's 3.3% rate
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Built for freelancers, instructors, and independent contractors in Korea subject to the standard 3.3% business-income withholding (3% income tax + 0.3% local tax). Enter a pre-tax contract amount to see your actual net take-home pay, or work backward from a target net income to find the pre-tax amount you need in your contract. Everything runs locally in your browser, so no figures are sent anywhere.
How to use
- Choose a tab: 'Pre-tax to Net Income' or 'Net to Required Pre-tax'.
- Enter the pre-tax contract amount (forward mode) or your target net income (reverse mode).
- Review the result card showing net income (or required pre-tax amount) plus the breakdown of 3% income tax and 0.3% local tax.
- Use the copy button to grab a ready-made summary for contracts or messages.
FAQ
- What exactly is the 3.3% withholding?
- It's the standard Korean withholding rate on business income paid to freelancers and independent contractors — 3% income tax plus a 0.3% local tax (10% of the income tax). It's typically an advance payment reconciled at annual tax filing.
- Why doesn't the reverse calculation land on a perfectly round number?
- The required pre-tax amount is derived by dividing the target net income by 0.967 and rounding, so small rounding differences of a few KRW can appear. Treat the result as a close reference figure.
- Is my entered data stored or transmitted?
- No. All calculations happen entirely in your browser — nothing is sent to or stored on a server.