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, both are reconciled at May's comprehensive income tax filing. But the choice materially changes what you hold in hand meanwhile. Here's the 2026 breakdown.

1. What Each Rate Means

• 3.3% (Business income) — 3% income + 0.3% local. For recurring freelance services.
• 8.8% (Other income) — 8% + 0.8% local. For one-off lectures, writing fees, consulting. Under the hood: 60% deemed expenses, then 20% on the remaining 40%.

2. Headline Rate vs. Actual Tax Burden

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

• Business income — real expenses deducted with proof; high-expense industries get lower effective tax.
• Other income — automatic 60% deemed expense with zero paperwork. Great for sporadic income. Over KRW 3M/year of "other income," it flips to comprehensive taxation.

Example: KRW 5M service fee

• As business income (3.3% withheld): 165K withheld. May settlement with 1.5M actual expenses → taxable 3.5M → ~210K final.
• As other income (8.8% withheld): 440K withheld. 60% auto-expense (3M) → taxable 2M → ~120K; 320K refund.

3. Who Decides Which Category?

Not the client. NTS classifies by:

• Continuity — recurring = business income
• Business intent — registration, public-facing site
• Primary income — main job or sideline

A monthly retainer is business income, not other income. Miscategorization triggers penalties later.

4. Three Things Freelancers Miss

1. Health insurance shock — crossing KRW 20M/year as a dependent pushes you into regional insurance at much higher rates.
2. National Pension auto-enrollment — business-income earners receive invoices once income crosses thresholds.
3. VAT — over KRW 80M revenue flips you to general VAT status with 10% quarterly management.

5. Calculators

• Freelancer 3.3% Calculator
• Salary Calculator
• 4 Insurances Calculator
• VAT Calculator