About

What Silsuryeong is

Silsuryeong is a free take-home pay calculator for South Korea. It is built for anyone working here — and for those weighing a job offer — so that before you sign a contract you can see how much of a gross salary actually lands in your account. You enter a monthly gross and your family details; it itemizes the employee share of the four insurances and the income tax, and shows the take-home. No sign-up, no cost.

How it calculates

The calculation starts from monthly gross and subtracts what Korea really deducts: the four insurances — National Pension, health, long-term care and employment — and income tax plus local income tax. Long-term care is charged on the health premium rather than on wage, and industrial-accident insurance is left out because the employer pays it in full.

For income tax we made a deliberate choice. Korea’s monthly withholding uses the National Tax Service’s simplified table (간이세액표), which is a published lookup, not a public formula. Rather than reproduce that table imperfectly, the calculator computes the mathematically exact year-end settlement(연말정산) tax — the earned-income deduction, the personal deductions, the progressive scale, and the earned-income and child tax credits — and shows it ÷ 12 for a monthly figure. Every calculator page carries a clear note that actual monthly withholding follows the simplified table and reconciles at year-end, so a small difference from 간이세액표-based tools is expected and honest.

Where the numbers come from

At launch, each rate and amount will trace to its primary Korean source with the date it was last checked: the National Tax Service (국세청) for income tax, the National Pension Service (국민연금공단) for pension rates and the standard-income band, the National Health Insurance Service (국민건강보험공단) for health insurance, the Ministry of Health and Welfare (보건복지부) for the long-term-care rate, and the Ministry of Employment and Labour (고용노동부) for employment insurance and the minimum wage.

What it does not model

The calculator covers the standard employee case. It does not include user-specific special deductions — medical, education, insurance-premium, donation, credit-card, pension-savings or monthly-rent credits — which only ever lower tax further; where relevant, it flags them rather than guessing. Bonuses (상여금) are ordinary taxable income and are not modeled in the monthly figure, and Korea has no statutory thirteenth-month salary. The result is a clear, honest estimate of the standard case, not a substitute for your payslip or a tax adviser.

Our promise: honest numbers

One rule sits above the rest: no number here is invented. A model never decides a rate is correct — it cites each value against a primary source. Anything we could not confirm is left out or clearly hedged. We would rather write less than write something that does not hold up.

The figures shown are transcribed from named primary sources and are the ones in force for 2026. Two things limit them: a very recent change may not have reached these pages yet, and none of them has been through this site’s own review and sign-off. For the amount that binds you, the cited source or the National Tax Service is what counts.

The figures on this site were last checked: jul 2026. Each value carries its source and the date it was last checked.

Disclaimer

Results are informational. Silsuryeong is not a substitute for a tax adviser, an accountant, or the National Tax Service — for an official calculation, turn to them. The site loads Google Analytics 4 to count visits, with every storage signal denied by default, so it sets no cookie and stores no identifier; the amounts you type never leave your browser. See the cookie page for the detail.

The content of this page is still being expanded.