Why Korean take-home pay differs from gross salary (social insurances & taxes)
Last updated: 2026-06-25
Gross salary is the pre-tax figure, while take-home pay is what reaches your account after the 4 social insurances (National Pension, Health Insurance, Long-term Care, Employment Insurance) and income tax plus local income tax - which is why they differ.
Generally about 80-90% of gross salary becomes take-home pay, and the higher the salary the lower the take-home ratio due to progressive income tax.
Gross salary vs take-home pay: what's the difference
If a job interview mentions a "40 million KRW salary," that amount is not split evenly into your account each month. Gross salary is the pre-tax (total) amount the company agrees to pay over a year, while take-home pay is what you actually receive after social insurance contributions and taxes are withheld. Because a portion is withheld each month from your salary divided by 12, take-home pay is always less than a simple twelfth of the gross.
For example, at a gross salary of 40 million KRW the gross monthly pay is about 3.33 million KRW, but after the social insurances and taxes the take-home pay is roughly 2.87 million KRW. The difference is exactly the set of deduction items explained below.
The 4 social insurances taken from your pay
The 4 social insurances are National Pension, Health Insurance, Employment Insurance and Industrial Accident Insurance. Of these, industrial accident insurance is fully paid by the employer, so it is not taken from your pay. The four items the employee actually pays are below, with Long-term Care added on top of Health Insurance.
| Item | Employee rate | Base |
|---|---|---|
| National Pension | 4.5% | Standard monthly income (cap 6,170,000 / floor 390,000) |
| Health Insurance | 3.545% | Taxable monthly salary |
| Long-term Care | Health insurance × 12.95% | Health insurance premium |
| Employment Insurance | 0.9% | Taxable monthly salary |
National Pension funds your retirement pension, Health Insurance covers medical care, Long-term Care covers care for age-related illness, and Employment Insurance funds unemployment benefits and job stability. The National Pension has a standard monthly income cap (6,170,000 KRW), so above it the contribution is fixed at 277,650 KRW per month. There is also a floor (390,000 KRW), so even very low income pays a minimum contribution.
The taxes taken from your pay
Separately from the social insurances, income tax (wage income tax) and local income tax are withheld. Income tax is pre-deducted each month per the National Tax Service simplified withholding tax table, and the next year's year-end tax adjustment settles a full year's tax - a refund if you overpaid, an additional payment if you underpaid.
- Income tax — Charged per the simplified table based on taxable monthly salary and number of dependents. More dependents means more deductions and a lower tax.
- Local income tax — 10% of the income tax goes to the local government. If income tax is 150,000 KRW, local income tax is 15,000 KRW.
Income tax is progressive, so a higher salary falls into a higher rate bracket. That is why the take-home ratios differ between a 30 million and an 80 million KRW salary - the higher the salary, the lower the take-home ratio.
Non-taxable items raise take-home pay
Not all pay is taxable. Certain items - the meal allowance (up to 200,000 KRW/month), a self-driving allowance (200,000 KRW/month), childbirth and under-6 childcare allowances - are classified as non-taxable and excluded from the social insurances and income tax. So for the same gross salary, a pay structure with a larger non-taxable share yields higher take-home pay.
For instance, treating a 200,000 KRW meal allowance as non-taxable lowers the taxable monthly salary by that amount, slightly reducing National Pension, Health Insurance, Employment Insurance and income tax. This is why many companies list a meal allowance as a separate line in pay.
How to check your take-home pay quickly
Calculating each item by hand is tedious. Enter your gross salary, non-taxable meal allowance and number of dependents into the Korea Net Salary Calculator and it shows the National Pension, Health Insurance, Long-term Care, Employment Insurance, income tax and local income tax deductions plus your monthly and annual take-home pay in a table. Note that income tax is an approximation of the simplified table, so confirm exact figures with the National Tax Service.
Summary
- Gross is pre-tax; take-home is the amount that actually reaches your account after social insurances and taxes.
- Employee social insurances are National Pension 4.5%, Health Insurance 3.545%, Long-term Care 12.95%, Employment Insurance 0.9%.
- Income tax follows the simplified table; local income tax is 10% of income tax.
- The larger the non-taxable items (meal allowance, etc.), the higher the take-home pay.
Frequently asked questions (FAQ)
What percent of gross salary is take-home pay?
Generally about 80-90% of gross salary becomes take-home pay. The higher the salary, the larger the deduction ratio as income tax progressivity kicks in, lowering the take-home ratio.
What share of the social insurances does the employee pay?
The employee share is National Pension 4.5%, Health Insurance 3.545%, Long-term Care (12.95% of health insurance) and Employment Insurance 0.9%. Industrial accident insurance is fully paid by the employer and is not taken from your pay.
Does increasing non-taxable items raise take-home pay?
Non-taxable items such as the meal allowance (200,000 KRW/month), a self-driving allowance, and childbirth/childcare allowances are excluded from the social insurances and income tax, so the larger the non-taxable share, the higher the take-home pay for the same gross salary.
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Last updated: 2026-06-25