As Asia’s 4th largest economy, South Korea offers a developed, tech-forward, and resilient environment for businesses looking to expand. The nation’s economic strength is built on a highly educated and skilled workforce, with innovation in key sectors like semiconductors, electronics, and biotechnology. 

The country is an exciting place for work nomads or companies that want to know how to hire employees in South Korea. However, working there requires navigating a structured and regulated employment framework. Unlike markets where a “move fast” approach might work, success in South Korea demands a “comply first, then scale” strategy. 

To operate compliantly, you must be familiar with the primary authorities governing employment and taxation:

  • The Ministry of Economy and Finance (MOEF)
  • The National Tax Service (NTS)

This guide breaks down all you need to know before doing business in South Korea, including what social contributions and income taxes you must be familiar with. 

What is Payroll Tax in South Korea?

Participation in South Korea’s social security system, known as the “Four Major Social Insurances, is mandatory for employers and employees. These contributions are a significant component of total labor costs and must be accurately calculated and withheld from payroll each month.

The key programs are:

  • National Pension (NP): Provides retirement, disability, and survivor benefits.
  • National Health Insurance (NHI): A universal healthcare program covering medical costs for employees and their dependents.
  • Employment Insurance (EI): Offers unemployment benefits and funds job training initiatives. Employers are paying a higher share to fund workforce development programs.
  • Workers’ Compensation Insurance (WCI): This insurance is funded entirely by the employer and covers work-related injuries, illnesses, or death.

Employer Contributions

Employers in Korea have several tax and reporting duties. They must register with the Korean tax and social insurance authorities and keep all registrations up-to-date. Each pay period, the employer calculates and withholds payroll taxes and income tax from employee wages and files returns and remits payments by the due dates (typically by the 10th or 15th of the following month). 

Social insurance contributions go to the respective agencies (National Pension, Health Insurance, etc.), and income taxes go to the National Tax Service (NTS). Failing to register or remit on time can lead to penalties.

Employers pay roughly 4.5% of salary to pension, 4.0% to health insurance, 1.15–1.75% to employment insurance (plus the 0.25–0.85% training/employment fund fees).  The exact rate for EI depends on company size, and the extra 0.25%–0.85% contribution is for related government funds (employment stabilization and vocational training). 

Employers also contribute full workers’ comp premiums (0.56–18.56%); these contributions are on top of gross wages. Employers must use the correct WCI rate for their sector, as set by the labor authorities. The government may impose fines or interest if an employer fails to pay or report these contributions correctly.

Korean law imposes no extra local-level payroll taxes on employers beyond the national contributions. However, employers withhold 10% local income tax surtax on each employee’s income tax and pay that to the city or provincial government.

Korea also mandates severance pay for employees who leave after long service. Employers fund severance separately (typically into a retirement fund), at the rate of one month’s salary per year of service. This is not deducted from an employee’s paycheck but is an employer expense. Severance payments are taxed differently (as retirement income), and employees do not share them.

Managing the payroll workload, especially across borders, can feel overwhelming. Many companies hire a Payroll Outsourcing Solution to manage the complex tax calculations and evade fines or penalties. 

With our services at Remote People, we process payroll, calculate and withhold social insurance and income tax, manage filings, and ensure data security. We also integrate payroll with HR systems and support contractor payments, while keeping your operations compliant and transparent. 

You can use our free Global Payroll Calculator to see your total payroll costs. 

Employee Contributions

Employees in Korea also contribute to payroll taxes. Each worker pays 4.5% of their wages to the National Pension.  Pension contributions are capped at a monthly salary of about KRW 6.17 million, so the maximum pension payment per person is roughly KRW 277,650.

Employees also contribute about 4.004% to the National Health Insurance. For 2025, earnings above KRW 119.6 million per year pay no further contributions. The total 8.008% tops out at ~KRW 9.58 million per month.

They also pay 0.90% for Employment Insurance. (No employee payment is required for workers’ compensation.) In total, about 9% of an employee’s gross salary is withheld for these social programs.

These employee contributions are deductible from taxable income when the individual files taxes. Korean tax law allows individuals to subtract the NP, NHI, and EI contributions made through payroll from their taxable income. Employees generally have no further payroll taxes beyond verifying that their pay stubs and year-end withholding statements are correct.

Insurance Program Employee Contribution Employer Contribution Total Rate Notes
National Pension (NP) 4.5% 4.5% 9.0% Capped at a monthly salary of KRW 6,170,000
National Health Insurance (NHI) 4.004% 4.004% 8.008% Additional Long-Term Care premium levied on the NHI amount
Employment Insurance (EI) 0.90% 1.15%–1.75% 2.05%–2.65% Employer rate varies by industry; also funds job stability programs
Workers’ Compensation Insurance (WCI) 0% 0.56%–18.56% 0.56%–18.56% 100% employer-funded; rate depends on industry risk level

Discover the current minimum wage in South Korea and what it means for both employers and employees.

Personal Income Tax in South Korea

Tax duty in South Korea depends on residency status.

  • A resident has a home in South Korea or has stayed there for 183 days or more in a year. Residents must pay tax on their worldwide income.
  • A non-resident pays tax only on income earned inside South Korea.

For foreigners, there is an important rule known as the “5-in-10-year rule.” If a foreign resident has lived in South Korea for five years or less within the last ten years, they only pay tax on foreign income if paid by a Korean company or sent into Korea. This gives new expatriates a tax advantage during their first years in the country.

South Korea uses a progressive tax system for residents who do not choose the flat tax option. In addition to the national tax, there is a 10% local income surtax, which is calculated on the amount of national tax due.

Taxable Annual Income (KRW)National Tax RateEffective Rate (with Surtax)
Up to 14,000,0006%6.6%
14,000,001 – 50,000,00015%16.5%
50,000,001 – 88,000,00024%26.4%
88,000,001 – 150,000,00035%38.5%
150,000,001 – 300,000,00038%41.8%
300,000,001 – 500,000,00040%44.0%
500,000,001 – 1,000,000,00042%46.2%
Over 1,000,000,00045%49.5%

Discover the latest average salary in South Korea and how compensation varies across roles and sectors.

The Flat Tax Rate Option

South Korea gives foreign employees the choice of a flat 19% tax rate on their Korean employment income. The total effective rate is 20.9% when you include the local surtax. This option makes taxes simple and predictable. 

However, there is a trade-off: employees who choose the flat rate cannot claim most deductions, allowances, or credits. Originally, foreign workers could only use this option for five years. In a major policy change, South Korea extended eligibility to twenty years. 

Which system is better? It depends.

  • High earners usually benefit from the flat tax because their rate under the progressive system would be higher.
  • Lower earners or those with many deductions may save more under the progressive system.

Industry and Other Considerations

Some payroll taxes vary by industry or situation. The most notable is the workers’ compensation insurance rate. Employers should confirm their specific WCI percentage with the Ministry of Employment and Labor. 

Korea has tax treaties and social security agreements with many countries. A treaty may affect withholding or provide relief from double taxation. For instance, a totalization agreement could exempt an American worker from Korean pension contributions if they remain under U.S. Social Security. Employers and employees should check any relevant agreements with the NTS to avoid double payment of taxes or contributions.

Finally, remember that severance pay is an employer expense (employees do not contribute) and is taxed under a special retirement income tax when paid out.

Challenges to Your South Korea Expansion

Hiring employees directly in South Korea comes with major challenges for foreign companies. To do this, you must set up a local legal entity. This is not only costly but also takes months of effort. It involves dealing with Korean corporate law, opening local bank accounts, and registering with multiple government offices. 

Even after setup, you must follow strict labor laws, which creates compliance risks. Employers must manage payroll correctly, provide mandatory benefits, and handle complex work visa applications for foreign staff.

How an EOR Simplifies Hiring in South Korea

An Employer of Record (EOR) in South Korea offers a faster, compliant, and cost-effective way to hire employees. An EOR is a licensed third-party company that becomes the legal employer of your staff in South Korea. It’s a model widely used by global businesses to enter new markets without creating a local entity.

The EOR takes care of all legal and HR responsibilities, including:

  • Drafting compliant employment contracts in Korean.
  • Running monthly payroll in KRW and ensuring proper tax withholding.
  • Managing mandatory social contributions like pension, health, and employment insurance.
  • Ensuring compliance with labor laws throughout the employee lifecycle.

While the EOR is the official employer on paper, you still manage your team’s daily work, projects, and performance.

Working with an EOR gives your company several advantages. First, it enables rapid market entry. You can hire and operate in South Korea within weeks instead of months. Second, it reduces legal and financial risks, since the EOR assumes liability for labor compliance. Third, it is more cost-efficient, removing the need for expensive entity setup and a large in-country HR department.

If your company already has a local entity, you can use South Korea Professional Employer Organization (PEO) services to outsource payroll, benefits, and compliance. A full-service partner like Remote People can also support you with a recruitment agency in South Korea, plus the EOR and PEO services. 

Enjoy a smooth and law-abiding pathway in South Korea with our expert services. Contact us today!