Leaving Your Job in Korea: How Korean Severance Pay Is Taxed for Foreign Employees
You have worked in Korea for four years.
Your final salary is coming, and HR tells you that you will also receive about KRW 30 million in severance pay.
Then a worrying thought appears:
Will that KRW 30 million be added to my salary and pushed into a high Korean income tax bracket?
For qualifying retirement income, the answer is no.
Korea does not simply add retirement income to your ordinary salary and tax the entire amount as one large paycheck. Retirement income has its own tax calculation, including deductions based on your years of service and a separate annualization process.
For a foreign employee preparing to leave Korea, however, tax is only part of the story.
You should also know when the severance must be paid, whether it goes through an Individual Retirement Pension account, and which Korean tax document you should keep after leaving the country.
Your Severance Is Not Simply Added to Your Final Salary
A common mistake is to look at your normal Korean income tax bracket and apply that percentage directly to your severance.
That is not how Korean retirement income tax works.
The calculation starts with your retirement income and applies a service-period deduction (근속연수공제).
The remaining amount is converted into an annualized figure called 환산급여, or converted salary. Another deduction is then applied before the tax rate is calculated, and the resulting tax is converted back according to your years of service.
This matters because a lump-sum retirement payment accumulated over several years is not treated as if you earned the entire amount as ordinary salary in one month.
Your Years of Service Matter
Under the current calculation, the service-period deduction increases with the number of years worked.
For up to five years of service, the deduction is KRW 1 million per year. Longer periods of service use higher statutory deduction brackets.
After this deduction, the converted salary is calculated using this basic formula:
(Retirement income − service-period deduction) ÷ years of service × 12
A further converted-salary deduction is then applied before the retirement-income tax is calculated.
This means two employees receiving the same severance payment can have different tax results if their periods of service are different.
That is why statements such as “Korean severance is usually taxed at 3%” or “foreign employees pay about 5%” can be misleading.
There is no single effective severance tax rate that applies to everyone.
What Would Happen With KRW 30 Million After Four Years?
Consider a simplified example.
An employee has four years of service and receives KRW 30 million in retirement income.
The service-period deduction would be:
KRW 1 million × 4 = KRW 4 million
That leaves KRW 26 million before the next stage.
The converted salary would then be:
KRW 26 million ÷ 4 × 12 = KRW 78 million
The calculation does not stop there. A converted-salary deduction and the remaining retirement-income tax calculation still have to be applied.
The important point is simpler:
You cannot estimate the tax by multiplying KRW 30 million by your ordinary salary tax rate.
Your retirement income and years of service are central to the calculation.
Severance Is Based on Average Wage, Not Simply “One Month of Salary”
You may hear Korean severance described as:
“One month of salary for every year worked.”
That can be a useful shorthand, but it is not the legal formula.
Under Korea's retirement-benefit system, a qualifying retirement allowance is based on at least 30 days of average wages for each year of continuous service.
That distinction can matter when you compare your own estimate with the amount calculated by payroll.
If the figures differ, ask HR how your continuous service period and average wage were calculated rather than simply multiplying your final monthly salary by your years at the company.
When Must Your Employer Pay the Severance?
As a general rule, an employer must pay the retirement allowance within 14 days from the date the reason for payment arises.
When special circumstances exist, however, the payment date may be extended by agreement between the parties.
This is important if you are leaving Korea shortly after your final day at work.
Do not assume that your severance will arrive on your last working day.
Ask payroll when your retirement benefit will actually be processed before closing a Korean bank account that may still be needed for your final employment settlement.
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| Korean severance pay is taxed as retirement income rather than simply being added to an employee’s final salary. |
Does Your Severance Have to Go Into an IRP?
This is one area where departing foreign workers can easily receive oversimplified advice.
The general Korean system requires retirement benefits covered by the relevant rule to be transferred to an Individual Retirement Pension account (IRP, 개인형퇴직연금계정).
But there are statutory exceptions.
One of those exceptions concerns certain foreign workers who leave Korea after retirement.
That does not mean every foreign employee can simply tell HR before departure:
“I am flying home next month, so send my severance directly to my ordinary bank account.”
The timing and conditions matter.
If you are planning to leave Korea shortly after finishing your job, ask your employer or retirement-pension provider how the IRP rule applies to your particular retirement and departure schedule.
A useful question is:
“I am a foreign employee retiring from this job and leaving Korea. How will my retirement benefit be paid under the current IRP rules?”
That is better than assuming either that an IRP is always required or that foreign workers are always exempt.
One Document Is Especially Worth Keeping
Before leaving Korea, there is one tax document you should know:
퇴직소득 원천징수영수증
This is commonly described in English as a Withholding Tax Receipt for Retirement Income.
It records information about your retirement payment and the Korean tax withheld from it.
If you later need to explain the payment to a tax authority, accountant or financial institution outside Korea, having this document can be much easier than trying to reconstruct the transaction months later.
Ask your company's payroll or HR department how and when you can receive it.
Do not assume it will necessarily appear in your personal Hometax account before you leave Korea.
Will Your Home Country Tax the Korean Severance Again?
Possibly, but there is no universal answer.
Paying Korean tax on retirement income does not automatically determine how the payment will be treated in your country of tax residence.
Your home-country tax treatment can depend on its domestic tax law, the applicable tax treaty with Korea and its rules for foreign tax credits or other double-taxation relief.
This is another reason to keep your Korean retirement-income withholding receipt.
It provides evidence of the payment and tax withheld in Korea if you later need to determine its treatment abroad.
Three Korean Terms Worth Knowing
퇴직금 (Toejikgeum)
A retirement or severance benefit paid when the applicable employment requirements are met.
퇴직소득세 (Retirement Income Tax)
Tax calculated under Korea's rules for retirement income rather than simply adding the payment to ordinary salary.
퇴직소득 원천징수영수증 (Withholding Tax Receipt for Retirement Income)
A document recording information about the retirement payment and Korean tax withholding.
Before You Leave Korea
Before your final departure, confirm four things:
How much retirement benefit will I receive?
How were my service period and average wage calculated?
Will my payment go through an IRP, or does an exception apply to my situation?
When and how can I receive my retirement-income withholding receipt?
If you may need to report the payment in another country, keep your employment, payment and Korean tax records until you know how that country's rules apply.
The Key Point
A large Korean severance payment does not automatically get added to your final salary and taxed at your ordinary marginal income tax rate.
Korea calculates retirement income separately, and your retirement income and years of service are central to that calculation.
So if HR tells you that KRW 30 million of severance is coming, do not begin by asking:
“What is my salary tax bracket?”
Start with:
“How many years of service are being counted, and how will Korea calculate the tax on this retirement income?”
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