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Tax
Use determined income tax, prepaid tax, and special-payment tax to estimate a South Korean year-end tax settlement refund or additional payment.
How to read these results
These values are calculated from your current inputs. Check the input units and this calculator’s stated assumptions or included scope alongside the results.
Primary result: Estimated refund
Supporting value: Additional payment
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A negative settlement means a refund of the absolute amount; a positive settlement means additional tax due. Confirm the final amount and timing with your withholding agent.
South Korea's National Tax Service describes settlement tax as determined tax minus prepaid tax and special-payment tax. A positive result means additional tax due; a negative result means a refund of the absolute amount.
Verified: Aug 26, 2026
Use the determined-tax, prepaid-tax, and special-payment-tax amounts shown on your earned-income withholding certificate. This calculator covers the income-tax settlement structure only, so local income tax and other amounts must be checked separately.