Freelancer 3.3% Tax Reverse Invoice Calculator

How it works

This freelancer 3.3% tax reverse calculator is not a salaried paycheck tool. It answers the practical question: "If I want exactly ₩3,000,000 in my account after withholding, how much should I invoice?"

In Korea, freelance and creator income is subject to 3.3% withholding tax on the supply amount, plus 10% VAT on tax invoices. This tool reverse-calculates supply amount → withholding → VAT → total invoice in one step.

1. Enter desired net pay — the amount you want after 3.3% withholding is deducted from the supply amount.
2. Reverse calculation — supply = net ÷ 0.967, VAT = supply × 10%, total = supply + VAT.
3. Auto-generated quote text — a client-ready estimate you can copy and send.
4. One-click copy — paste into email, chat, or your invoice template.

All math runs in your browser; nothing is sent to a server.

FAQ

How do I use the 3.3% reverse calculator?

Type the net amount you want to keep. The tool shows the total invoice including 3.3% withholding and 10% VAT. Example: ₩3,000,000 net → about ₩3,412,616 total bill.

What is the difference between net pay and invoice total?

The invoice total is supply amount + VAT. The client pays the total; 3.3% withholding is taken from the supply and remitted to tax authorities. VAT is reported separately. Net pay is what remains after withholding from the supply side.

What is the reverse formula?

Supply amount = desired net ÷ (1 − 0.033). VAT = supply × 10%. Total invoice = supply + VAT. This tool applies the same formula with won rounding.

Where can I use the quote text?

Click Copy quote and paste into email, KakaoTalk, Notion, or Google Docs. Line items are pre-filled so you can adjust dates or project names.

Does this work for simplified or exempt taxpayers?

This calculator assumes standard VAT (10%) freelance invoicing. Simplified or exempt business rules differ; verify with your tax advisor if that applies to you.

Does it work on mobile?

Yes. Run the 3.3% reverse calculation and copy quotes on your phone. Your last input is saved locally on the device.