You negotiated a salary of ₩3,500,000 a month. Your bank account receives about ₩3,020,000. Where did the rest go — and is that gap normal?
In Korea, the distance between your gross pay (세전) and your take-home pay (실수령액, the cash that actually lands in your account) comes from two things: your share of the four national insurances and the income tax withheld each month. For a typical salary it runs 12–14%, and almost nobody budgets for it before signing an offer. This guide breaks down every line using verified 2026 rates, walks through two worked examples, covers the foreigner-only 19% flat-tax option, and shows exactly how to estimate your own number.
Negotiate in net, not gross
Korean job offers are quoted in gross (세전) — the number before deductions. People coming from places where the quoted figure is closer to net routinely overestimate their cash. A ₩50,000,000 annual gross is roughly ₩43 million in hand for a typical single filer; a ₩70,000,000 package is closer to ₩59–60 million net once insurances and tax come out. The exact ratio shifts with your salary, family and allowances, but the lesson is constant: the headline number is not your money.
This matters most at two moments. When you compare offers, line them up on a net basis — a higher gross with no non-taxable allowance can lose to a lower gross that includes a meal allowance and reflects your dependents. And before you commit to rent or a loan, base the decision on the figure that actually arrives, not the contract headline. The rest of this guide shows you how to get to that net for your own salary, line by line.
What comes out of your paycheck — and what doesn’t
Two buckets leave your pay: your share of the four insurances (the employer pays a separate share on top) and income tax withholding (소득세) plus a small local income tax (지방소득세). Two things, by contrast, never reduce your salary: industrial accident insurance (산재보험), which the employer pays in full, and non-taxable allowances — most commonly a meal allowance of up to ₩200,000 a month, plus certain childcare and vehicle allowances. When you estimate your take-home, enter only your taxable pay; if part of your salary is a non-taxable allowance, leave it out, because it lowers both your insurance base and your tax.
It also helps to see the deductions as more than “money gone”:
- National Pension is not really a tax — for many foreigners it is refundable as a lump-sum (반환일시금) when you leave Korea, depending on your nationality and any social-security (totalization) agreement your country has with Korea. For some nationalities it is fully recoverable with interest; for others it is not, which can change how you view the 4.75%. See National Pension for foreigners: exemptions and refunds.
- Health insurance covers you and your registered dependents under Korea’s National Health Insurance — clinics, hospitals, and heavily subsidized treatment, which is one of the better deals in the deduction list.
- Employment insurance makes you eligible for unemployment benefits and government training, subject to qualifying conditions.
As a quick rule of thumb, your insurance share alone is about 8.9% of taxable pay — roughly pension 4.75% + health-and-long-term-care ~4.07% + employment 0.9% — before any income tax. Income tax then adds a few more percent depending on your salary and dependents, which is how a typical paycheck lands 12–14% below gross. That floor is a handy sanity check on an offer: take the gross, shave roughly a ninth for insurance, then a little more for tax, and you have an approximate net before you ever open a calculator. If your actual deductions sit far outside the 12–14% band, something is usually off — a wrong dependent count, a missing non-taxable allowance, or a first- or last-month enrollment quirk worth raising with payroll.
For the employer’s side of these same numbers — what one hire really costs a company — see the four mandatory insurances for employers.
The four insurances — your share (2026)
These are the employee-side rates withheld from your salary in 2026:
| Insurance | Employee rate (2026) | Notes |
|---|---|---|
| National Pension (국민연금) | 4.75% | Capped at a ₩6,370,000 monthly base — max about ₩302,575 |
| National Health Insurance (건강보험) | 3.595% | No monthly salary cap |
| Long-term care (장기요양보험) | 13.14% of the health premium | ≈ 0.47% of pay; usually shown with health insurance |
| Employment insurance (고용보험) | 0.9% | Unemployment benefits + training |
Industrial accident insurance (산재보험) is paid 100% by your employer and never appears in your deductions. One detail surprises people: long-term care is a percentage of your health-insurance premium, not of your salary, so on most payslips health and long-term care print on a single combined line — a ₩125,820 health premium carries roughly ₩16,530 of long-term care with it.
There is also a counter-intuitive twist at the top end. Because National Pension is capped at a ₩6,370,000 monthly contribution base (so the most you pay is about ₩302,575), once your salary passes that point your pension deduction stops rising. An employee on ₩8,000,000 a month still pays the same ₩302,575 in pension as someone on ₩6,370,000 — not ₩380,000. Health and employment insurance have no equivalent monthly cap, but the pension cap alone means your take-home percentage actually improves slightly at very high salaries — the opposite of what most people assume. (Income tax stays progressive, so the effect is partial, not a free pass.)
Income tax: withheld monthly, settled twice a year
Korea does not withhold a flat percentage for income tax. Your employer looks you up in the National Tax Service simplified withholding table (근로소득 간이세액표) using two inputs: your monthly salary and your number of dependents (공제대상가족수) — yourself plus a spouse and dependents you claim, with children aged 8–20 adding a child credit. The table is not a simple formula; it is an official lookup grid, which is why two colleagues on the same salary can have different tax lines. More dependents means less tax withheld: a single filer on ₩3,500,000 has about ₩127,220 withheld, while the same salary with a non-working spouse and one child has visibly less. So the single biggest lever on your monthly tax is keeping that dependent count current with payroll — including family abroad who legally qualify. An out-of-date dependent count is the most common reason a foreigner quietly over-pays. On top of the income tax, a local income tax equal to 10% of it is added.
The crucial point: the monthly figure is only an estimate, trued up twice a year:
- February — year-end settlement (연말정산): income tax is reconciled against your real deductions (insurance premiums, medical and education spending, credit-card use, rent for some, donations). Because the simplified table withholds a little extra, most salaried people get a refund in February or March. Full mechanics: year-end tax settlement guide for foreigners.
- April — health-insurance reconciliation (정산보험료): the National Health Insurance Service recalculates your premium against your actual prior-year income. If your pay rose, an extra health charge can appear on an April or May payslip — sometimes a noticeable one. It is not a mistake or double-billing, just the annual true-up. If you got a raise last year, keep a small cushion for spring.
Two worked examples: ₩3,500,000 and ₩5,000,000
First, a single employee earning ₩3,500,000 gross per month, claiming one dependent (themselves), no children, no non-taxable allowances:
| Line | Amount (₩) |
|---|---|
| Gross monthly salary | 3,500,000 |
| National Pension (4.75%) | −166,250 |
| Health insurance (3.595%) | −125,820 |
| Long-term care (13.14% of health) | −16,530 |
| Employment insurance (0.9%) | −31,490 |
| Income tax (simplified table) | −127,220 |
| Local income tax (10% of income tax) | −12,720 |
| Net take-home | ≈ 3,019,970 |
That is about 86.3% of gross — a deduction of roughly 13.7%.
Now a single employee on ₩5,000,000. The insurance lines scale directly: National Pension ₩237,500, Health ₩179,750, Long-term care ₩23,620, Employment ₩45,000 — about ₩485,870 in insurances alone (still under the pension cap). Income tax is higher at this level because the progressive scale bites harder, so the net lands a few points lower as a percentage than at ₩3.5M. Rather than guess the tax line, run the exact figure in the calculator — but the shape is clear: insurances take a steady ~9–10%, and income tax does the rest of the work. Change the dependents, add a non-taxable allowance, or move the salary, and the percentage shifts; the structure never does.
What dependents do to the same salary. Take the ₩3,500,000 example again but add a non-working spouse and one school-age child. The four insurances do not change — they are tied to salary, not family — but the income-tax line falls, because the simplified table withholds less for three dependents than for one, and the child adds a separate credit. The net can rise by tens of thousands of won a month versus the single-filer figure above, with no change in gross at all. It is the clearest illustration of why your registered dependent count is worth checking: same salary, more take-home, purely from accurate paperwork. The reverse is also true — a single filer who never updates a dependent who has left keeps over-paying until the next settlement squares it up.
Foreigners: the 19% flat-tax option
Foreign employees in Korea can elect a flat 19% rate on their employment income instead of the standard 6–45% progressive scale. As of 2026 this is available if you started work in Korea by the legal cutoff of 31 December 2026 (verify the current deadline, as it is periodically extended), for up to 20 years from the date you first worked in Korea.
Two things to know before you celebrate:
- The flat rate excludes local income tax, so add 10% and the effective rate is about 20.9%.
- Choosing it waives essentially all deductions and credits — no personal deductions, no credit-card deduction, no medical or education relief.
You elect it either through your employer at monthly withholding or when you file, and the choice is confirmed at year-end settlement. Because it changes your monthly withholding, it directly changes your take-home. It tends to help high earners with few deductions — a single, high-salary professional renting an apartment — and to hurt typical salaries with a family or large deductible spending, who do better on the progressive scale precisely because they can deduct. The only reliable test is to compute both: your progressive net (use the calculator) versus a flat estimate at 20.9% of taxable pay. If they are close, favour progressive, because you keep the option to deduct. The full comparison is in our year-end tax settlement guide.
Different pay types: bonuses, severance, freelancers, directors
Several situations don’t follow the ordinary monthly table:
- Bonuses (상여금) use a separate withholding method that spreads the bonus across your regular pay periods, so a bonus month can show a larger-than-expected tax line. It usually evens out at year-end settlement.
- Severance pay (퇴직금) is taxed under its own, more favorable regime — length-of-service deductions, not ordinary salary rates — and never appears in your monthly take-home. It is paid once, when you leave, after at least a year of service. See Korea severance pay rules and the Severance Pay Calculator.
- Freelancers and contractors (사업소득자) usually have a flat 3.3% withheld (3% income tax + 0.3% local) and are not enrolled in the four insurances through that work. But that is only a prepayment: you settle in the May global income tax return (종합소득세 신고) and pay your own National Health Insurance — and optionally National Pension — as a regional subscriber (지역가입자). The real burden lands well above 3.3%, arriving as one spring bill rather than spread across the year.
- Registered company directors (등기임원) are generally not enrolled in Employment insurance (they are not ‘workers’ under the Employment Insurance Act); National Pension and Health still apply. Owner-directors also weigh salary vs dividend for paying themselves efficiently.
- Two jobs or a mid-year move? Your combined withholding will under-report your true tax, so the February settlement alone is not enough — file the May global income tax return and keep every employer’s withholding receipt (원천징수영수증).
How to read your payslip
Korean payslips split into two halves. Earnings sit under 지급내역: 기본급 is base pay, 식대 is the usually-non-taxable meal allowance, and you may also see 직책수당 (position allowance) or 연장근로수당 (overtime). Deductions sit under 공제내역, with six recurring lines: 국민연금 (National Pension), 건강보험 (Health), 장기요양보험료 (long-term care, tied to the health premium), 고용보험 (Employment), 소득세 (income tax), and 지방소득세 (local income tax). The figure at the bottom — labelled 실수령액 or 차인지급액 — is what actually reaches your account.
On your first payslip, verify four things:
- Your dependent count is correct — it drives the income-tax line, and a wrong count quietly costs you every month.
- Non-taxable allowances — if your contract includes a meal allowance, confirm up to ₩200,000 is treated as non-taxable rather than lumped into taxable base pay.
- Health + long-term care appear once (often combined), not as a duplicated full charge.
- Industrial accident insurance is not deducted from your side — if you see it, query payroll, because it is the employer’s cost alone.
A five-minute check in month one can stop a quiet, year-long overpayment, and it makes the February and April reconciliations far easier to follow.
Your take-home vs the employer’s cost
Your net is only one side of a wider gap. While you receive about 86% of your gross, your employer pays roughly 111% of it. On top of your salary the company adds its own matching shares, approximately:
- National Pension — 4.75%
- Health insurance + long-term care — ~4.07%
- Employment insurance — ~1.15% and up, rising with company size
- Industrial accident insurance — ~0.7–1.5%, set by industry risk
That is why a ₩3,500,000 salary costs the company closer to ₩3.9 million all-in, while you take home about ₩3.0 million — a wedge of nearly a million won a month between what the employer spends and what you bank. This matters when you negotiate (the employer’s real outlay is higher than your headline salary, even as your net is lower), and especially if you ever hire. See the true monthly cost of hiring in Korea and model the employer side in the Hiring Cost Calculator.
Estimate your own take-home in 30 seconds
Every salary, family situation and allowance produces a different number, so the only reliable answer is your own. Put your gross salary, dependents and children into the free Take-home Pay Calculator — it uses the exact 2026 rates and the official National Tax Service withholding table, and shows each deduction line plus your net pay and the percentage you keep. Try it twice: once as you are taxed now, and once with an extra dependent or a meal allowance, to see how much each lever is worth.
Know your net before you sign. It is the number your life in Korea actually runs on.
Disclaimer: This post reflects the author’s experience and publicly available information as of 2026. It is general information, not legal, tax, or immigration advice. Rules and rates change — verify current details with the relevant authority (NPS, NTS, MOJ) or a licensed professional before acting.
