Salary rate
Annual
Month
Semimonthly
Weekly
Day
Hour
Withholding
Salary
4,120,000 원
Income Tax
- 51,111 원
Local Tax
- 5,111 원
National Pension
- 185,400 원
National Health Insurance
- 161,669 원
Employment Insurance
- 37,080 원
Total tax
- 440,371 원
Net pay
* 3,679,629 원
Marginal tax rate
10.7%
Average tax rate
10.7%
89.3%
Net pay
10.7%
Total tax
Total tax
Net pay
The Taxberg
3,679,629 원
Net pay
787,909 원
Tax the employer pays
440,371 원
Tax you pay
Total tax paid
1,228,280 원
Did you know your employer also pays tax on your salary? It costs the employer 787,909 원 to pay you 4,120,000 원. In other words, every time you spend 10 원 of your hard-earned money, 2.98 원 goes to the government.
Real tax rate
25.0%
So, with you and the employer both paying tax, what used to be a 10.7% tax rate now rises to 25.0%, meaning your real tax rate is actually 14.3% higher than what it seemed at first.
Summary
If you make 4,120,000 원 a year living in South Korea, you will be taxed 440,371 원. That means that your net pay will be 3,679,629 원 per year, or 306,636 원 per month. Your average tax rate is 10.7% and your marginal tax rate is 10.7%. This marginal tax rate means that your immediate additional income will be taxed at this rate. For instance, an increase of 100 원 in your salary will be taxed 10.69 원, hence, your net pay will only increase by 89.31 원.
Bonus Example
A 1,000 원 bonus will generate an extra 893 원 of net incomes. A 5,000 원 bonus will generate an extra 4,466 원 of net incomes.
North America
Country 
Net pay
Average tax
Rank
USA
KRW 3763161
8.7%
1
Canada
KRW 3612697
12.3%
2
Latin America
Country 
Net pay
Average tax
Rank
Mexico
KRW 4006696
2.8%
1
Colombia
KRW 4244338
7.2%
2
Brazil
KRW 3801880
7.7%
3
Puerto Rico
KRW 3792456
8.0%
4
Ecuador
KRW 3730656
9.5%
5
Guatemala
KRW 3724955
9.6%
6
Costa Rica
KRW 3687400
10.5%
7
Panama
KRW 3666800
11.0%
8
Peru
KRW 3605001
12.5%
9
Argentina
KRW 3419600
17.0%
10
Chile
KRW 3394880
17.6%
11
Uruguay
KRW 3374280
18.1%
12
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NOTE* Withholding is calculated based on the tables of South Korea, income tax. For simplification purposes some variables (such as marital status and others) have been assumed. This document does not represent legal authority and shall be used for approximation purposes only.