South Korea is one of Asia’s most attractive markets for foreign companies looking to hire skilled talent. The country has a well-developed labour law framework, a highly educated workforce, and a stable regulatory environment. But before you bring on your first Korean employee, you need to understand what the payroll obligations will cost you. This guide covers every mandatory employer contribution, the income tax withholding rules, and what you need to know about retirement benefit obligations in 2026.
How employer taxes work in south korea
South Korea’s social insurance system is built on four mandatory schemes, each administered by a separate government body. As the employer, you’re responsible for registering with each agency, calculating contributions correctly, withholding the employee’s share from wages, and remitting both shares on time. Missing deadlines or misclassifying workers can trigger penalties and back-payment demands, so getting the setup right from the start matters.
The 2026 minimum wage is KRW 10,320 per hour, reflecting a 2.9% increase from 2025. The monthly equivalent is KRW 2,156,880, calculated on a standard 40-hour week that includes the paid weekly holiday. This figure is the floor for all contribution calculations.
National pension contributions
South Korea’s National Pension Scheme (NPS) is managed by the National Pension Service and provides retirement, disability, and survivor benefits. Both you and your employee each contribute 4.75% of monthly salary, giving a combined rate of 9.5%. You remit the full 9.5% to the NPS by the 10th of the following month.
Contributions are capped at a monthly salary ceiling of KRW 6,370,000 (applicable from July 2025 through June 2026), so the maximum employer contribution per employee per month is KRW 302,508. There is also a minimum contribution threshold of KRW 400,000 per month. For employees earning below that floor, contributions are still calculated at the floor amount.
Most foreign nationals working in South Korea are required to participate in NPS unless a bilateral social security agreement between South Korea and their home country exempts them. You’ll want to check whether such a treaty applies to your workforce before assuming any exemption.
Health and long-term care insurance
The National Health Insurance Service (NHIS) administers both the National Health Insurance and Long-Term Care Insurance programs. In 2026, the employer’s share of health insurance contributions is approximately 4.004% of monthly salary, and your employee contributes an equivalent amount. The NHIS adjusts its rates annually, so you should verify the exact figure each January.
Long-Term Care Insurance is levied as a percentage of the health insurance premium rather than as a standalone rate. It’s included within the overall NHIS contribution calculation, so for practical payroll purposes you can treat the combined health and long-term care employer cost as approximately 4.004% of salary.
Like NPS, there is a contribution ceiling tied to salary, and the NHIS applies its own caps. Contributions are due by the 10th of the month following the payroll period.
Employment insurance and workers’ compensation
These two programmes are both administered by the Ministry of Employment and Labour (MOEL), but they work differently.
Employment Insurance covers unemployment benefits and various employment stability programmes. Your contribution rate as an employer ranges from 1.15% to 1.75% of total wages, depending on your industry and company size. Your employee contributes 0.90%. The variance in the employer rate reflects different obligations under MOEL’s employment stability and skills development programmes, with larger companies typically falling into higher rate bands.
Workers’ Compensation Insurance (산재보험, Industrial Accident Compensation Insurance) is an employer-only obligation. There is no employee contribution. The rate is set by industry risk classification and ranges from 0.56% at the low end (low-risk office and service industries) to 18.56% for the highest-risk sectors such as certain types of construction or heavy industry. Your rate is assigned by MOEL based on your registered business activity codes, so verifying the correct industry classification before you begin payroll is essential.
Both contributions are remitted annually or monthly depending on your company size, with most employers filing monthly through the MOEL’s electronic reporting system.
Income tax withholding
Employers are required to withhold income tax at source from each payroll run. Korea uses a progressive income tax schedule with rates running from 6% to 45% depending on annual taxable income. A 10% local income surtax applies on top of the national income tax, effectively raising each bracket’s rate by 10%.
For foreign employees, there’s an alternative. They can elect to pay a flat 19% income tax rate plus the 10% local surtax, giving an effective rate of 20.9% on all employment income. This flat-rate option can be advantageous for higher earners whose income would otherwise push them into the upper brackets. The election must be made by the employee and is irrevocable for the period it covers, but it’s worth flagging to foreign hires as part of their onboarding.
You’re responsible for determining the correct withholding amount each month using the MOEL withholding tax tables, remitting withheld taxes to the National Tax Service (NTS), and filing year-end settlement returns. Korea’s year-end tax settlement (연말정산) process happens in January or February for the prior tax year, and it requires a reasonable amount of administrative work from your payroll team.
Retirement benefits and erbsa
South Korea’s retirement benefit rules are governed by the Employee Retirement Benefit Security Act (ERBSA). Under ERBSA, you must provide one of three things to any employee who has worked for you for one year or more: a funded Defined Contribution (DC) plan, a funded Defined Benefit (DB) plan, or a traditional severance payment equal to one month of average wages for each year of service.
The traditional unfunded severance model has been the default for small and medium-sized companies, but that’s changing. A tripartite agreement between the government, labour organisations, and employer groups reached in early 2026 is targeting legislation by end of 2026 to require all companies to move to funded ERBSA plans. Large companies with 300 or more employees are largely already operating funded plans. If you’re setting up a new Korean entity or expanding your workforce now, it’s worth structuring your retirement benefit as a funded DC plan from the start, as that’s the direction the law is heading.
There is no statutory 13th month pay obligation in South Korea. Bonus payments are common in practice and often structured as performance bonuses or annual gratuities, but they’re discretionary unless specified in an employment contract or collective bargaining agreement.
Total employer cost
Here’s a rough picture of the mandatory employer contribution load on top of gross salary:
| Contribution | Employer rate |
|---|---|
| National Pension (NPS) | 4.75% |
| Health + Long-Term Care Insurance | ~4.004% |
| Employment Insurance | 1.15%–1.75% |
| Workers’ Compensation Insurance | 0.56%–18.56% |
| Total (excluding workers’ comp variable) | ~9.9%–10.5% + workers’ comp |
For a typical office-based role, you can budget around 10% to 11% above gross salary for mandatory social contributions, before any retirement benefit accrual. The retirement benefit under a DC plan typically requires an employer contribution of at least 1/12 of annual wages (approximately 8.33%), so total employment costs are often 18% to 20% above base salary for a fully compliant setup.
How an EOR simplifies korean payroll compliance
Setting up a legal entity in South Korea takes time and requires ongoing compliance work across multiple government agencies. If you’re hiring a small team or want to start quickly, an Employer of Record (EOR) lets you hire Korean employees through an established local entity while managing all the NPS, NHIS, employment insurance, workers’ compensation, tax withholding, and ERBSA obligations on your behalf.
For companies that already understand what an Employer of Record (EOR) is and want to evaluate providers, it’s worth looking at platforms with existing infrastructure in South Korea and a track record of managing the annual NHIS rate changes, MOEL registration requirements, and the evolving ERBSA landscape. You can compare EOR services to find the right fit for your headcount and hiring timeline.
If you’re working with independent professionals rather than employees, South Korea has distinct rules for worker classification, and the risks of misclassification are meaningful. Using a platform built for contractors helps you stay compliant while maintaining the flexibility you need.
Conclusion
South Korea’s employer tax obligations are well-structured but genuinely complex. Between four separate social insurance programmes, progressive income tax withholding with a foreign employee flat-rate option, and retirement benefit rules that are actively shifting toward funded plans, there’s a lot to stay on top of. Getting the rates right, hitting remittance deadlines, and anticipating the ERBSA legislative changes are all part of running compliant Korean payroll.
If you’d like to explore how RemotePass can handle South Korea payroll and compliance for your team, get in touch for a demo.
