Korean Freelancer Withholding: 3.3% vs. 8.8% — The Real Difference

The most confusing numbers on a Korean freelancer's first contract are 3.3% vs. 8.8%. Both are withholding rates, but they are not categories the parties may freely choose. The substance of the work—including continuity and repetition—determines the income type. Business income is generally reconciled in May, while qualifying other income may remain separately taxed depending on the annual other-income amount and the taxpayer's election. Here's the 2026 breakdown.

1. What Each Rate Means

• 3.3% (withholdable business income) — 3% income tax plus 0.3% local tax for covered independent personal services conducted on a continuing or recurring basis.
• 8.8% (certain other income) — qualifying one-off lecture, writing, or advisory fees may receive a 60% deemed-expense allowance, followed by 20% income tax plus local tax on the remaining 40%. Not every kind of other income gets this expense rate, and a per-payment de minimis rule can also apply.

2. Headline Rate vs. Actual Tax Burden

3.3% looks lower, but final tax after reconciliation can be either direction.

• Business income — qualifying business expenses supported by books and evidence are reflected; prescribed estimated-expense methods may apply when books are not kept. Final tax combines other income and deductions, so 3.3% is not a final rate.
• Other income — qualifying one-off personal-service income may use the 60% deemed-expense rate. If the annual other-income amount after expenses is KRW 3M or less, the taxpayer may choose separate or comprehensive taxation; above KRW 3M, comprehensive taxation generally applies.

Example: KRW 5M service fee

• If it is covered business income, KRW 165K is withheld and KRW 4.835M is paid. The withholding is a prepayment; final tax depends on total income, qualifying expenses, and deductions at filing.
• If it is other income eligible for the 60% deemed expense, KRW 440K is withheld and KRW 4.56M is paid. The other-income amount is KRW 2M, so separate or comprehensive taxation may be chosen if all annual other-income amounts remain at or below KRW 3M.

Under separate taxation, the KRW 440K withholding is final for this item. Under comprehensive taxation, any extra payment or refund depends on all other income and deductions; it cannot be preset as a KRW 320K refund.

3. Who Decides Which Category?

Not the client. NTS classifies by:

• Continuity and repetition — whether an independent activity is carried on repeatedly for profit
• Independence and business form — contract structure, own account and risk, registration, and outward business activity
• All facts together — the nature, duration, and frequency of the work and the taxpayer's other activities

A recurring monthly retainer may be classified as business income. The result is fact-specific, and misclassification can require an amended return and additions to tax.

4. Three Things Freelancers Miss

1. Health-insurance dependent status — the KRW 20M aggregate-income test is only one condition. Business registration, business-income amount, property and other tests also matter, so business income can affect status even below KRW 20M.
2. National Pension status — business income can affect individual-subscriber status and the contribution base, but age, residence, other coverage, and statutory exclusions matter. Confirm the income and status recognized by the NPS.
3. VAT — first determine whether the service is taxable or exempt. Exemption for statutory personal services depends on the facts, including the service type and how it is provided; not every freelancer is VAT-exempt. The KRW 104M prior-year gross-supplies threshold distinguishes simplified from general VAT status for VAT-taxable sole proprietors. Simplified-taxation exclusions and separate thresholds for real-estate leasing and certain entertainment businesses also apply. See Article 42 of the Enforcement Decree of the Value-Added Tax Act for covered exempt personal services. The NTS guide for individual media creators illustrates taxable and exempt categories in that industry; its conditions should not be applied to every freelancer.

5. Calculators

• Freelancer 3.3% Calculator — estimate net payment from a contract amount or find the minimum contract for a target net payment, assuming 3.3% withholding
• Salary Calculator — estimate employee pay deductions and compare salary conditions A/B
• 4 Insurances Calculator
• VAT Calculator — separates the supply amount and VAT; it does not determine whether a service is taxable or exempt