2026 Korea Income Tax Refund Guide — 13 Deductions & Credits Complete

During Korea's comprehensive income tax filing season (May 1–31, 2026), the question everyone wants answered is simple: "How much can I get refunded?" The short answer is that claiming all 13 deduction and credit categories below can put salaried workers in the ₩300,000–1,500,000 refund range, while freelancers often see ₩500,000–3,000,000 back. This guide walks through the 2026 limits, the items people most often miss, and the checklist to run before the deadline. > Quick Summary

• Filing deadline: May 31, 2026, 24:00 KST (June 30 for honest filers)
• Average refund: ₩800K (employee), ₩1.5M (freelancer), ₩2M+ (multi-income)
• #1 missed item: Credit card spend deduction (25% of employee refunds)
• Penalty for skipping: 20% non-filing surcharge + 0.022%/day late fee ## What is the comprehensive income tax refund? Your refund is the gap between the tax already withheld from you (through year-end settlement or 3.3% withholding) and the tax you actually owe after deductions and credits. Employees use the May filing period to add items they missed during year-end settlement. Freelancers and business owners can recover part of the 3.3% withholding (3% national + 0.3% local) already taken from their income. Calculate live → Global Exchange tool. ## 13 core deductions and credits (2026 limits) ### Income deductions (reduce taxable base) — 7 items 1. Personal exemption — ₩1.5M per dependent, +₩1M for seniors aged 70+

1. 1National pension — full employee contribution
2. 2Health & employment insurance — full employee share
3. 3Credit card spend — 15–30% of spend exceeding 25% of gross income (cap ₩3M, plus traditional market and transit add-ons)
4. 4Housing subscription savings — 40% of annual contribution up to ₩2.4M (head of homeless household)
5. 5Yellow umbrella mutual aid — ₩2M–5M annually for self-employed/executives
6. 6IRP & pension savings — 13.2–16.5% of combined annual ₩7M cap ### Tax credits (subtracted directly from tax owed) — 6 items 8. Child credit — ₩150K (1), ₩350K (2), ₩650K (3), +₩300K each beyond third
7. 7Pension account credit — 13.2% (income > ₩55M) or 16.5% of contributions
8. 8Medical expense — 15% of expenses exceeding 3% of gross income (30% for fertility, 20% for premature)
9. 9Education expense — unlimited self, ₩3M/child (₩9M college) at 15%
10. 10Monthly rent credit — 15–17% of up to ₩7.5M for tenants under ₩80M income
11. 11Donation credit — 15% (≤₩10M), 30% (excess) for legal/designated donations ## Top 3 missed refund opportunities ### Case 1: Forgetting dependents (avg loss ₩220K) A spouse with no income, or annual income under ₩1M, may qualify for the ₩1.5M personal exemption, and child credits can be added on top. This is especially easy to miss in the year after a marriage or birth. ### Case 2: Uncollected medical receipts (avg loss ₩350K) Hospital and pharmacy spending usually appears automatically in the Hometax simplified service, but health checkups, LASIK, dental implants, orthodontics, and postpartum care often need to be entered with separate receipts. It is common for these overlooked expenses to total ₩2M–5M in a year. ### Case 3: Missing rent credit (avg loss ₩900K) This is one of the most commonly missed credits for renters earning under ₩80M. For example, ₩600K monthly × 12 × 17% = ₩1.22M refund. You do not need your landlord's consent to claim it. ## Pre-deadline checklist - [ ] Download year-end simplified PDF from Hometax (re-verify even if employer already filed)

• [ ] Collect missed receipts: medical, education, donations
• [ ] Update dependents (births, marriages, divorces, deaths)
• [ ] Sum credit/debit card and cash receipt totals
• [ ] Top up pension account (IRP/pension savings) before May 31 for current-year deduction
• [ ] Compare separate vs comprehensive taxation if interest/dividend income exceeds ₩20M ## Frequently Asked Questions ### Q1. What happens if I don't file? You may owe a 20% non-filing penalty (40% if fraudulent) plus a 0.022%/day (8.03%/year) late fee. On ₩1M owed, that works out to roughly ₩280K extra after one year. ### Q2. When does the refund arrive? Refunds usually arrive about 30 days after filing. File in early May and you can generally expect payment in early June; file in late May and it will more likely arrive in late June. ### Q3. Do salaried workers need to file in May? If wage income is your only income, year-end settlement is usually final. But side income (blog, YouTube, lecturing), rental income, or financial income > ₩20M makes May filing mandatory. ### Q4. Are freelancer 3.3% withholdings refundable? Yes. After the simple expense ratio is applied (60–80% by occupation), you can claim the difference if your calculated tax is lower than the amount withheld. Average reclaim rate: 40–60% of withholdings. ### Q5. Credit card vs cash receipt — which gives more deduction? Cash receipts and debit cards are deducted at 30%, while credit cards are deducted at 15%. In both cases, only spending above 25% of gross income counts (for example, on a ₩50M salary, only spending over ₩12.5M qualifies). ### Q6. Can I correct my filing after submission? Yes. You have 5 years to file an amended return for missed deductions. Finding medical receipts in June is still soon enough to correct the return. ## Related tools and content - Compare exchange rates and remittance fees → Global Exchange
• Real estate capital gains calculator → Real Estate Tax
• More finance content → Finance blog category > 📅 Last updated 2026-05-01: Filing season opens May 1. Hometax accepts submissions 24/7 at www.hometax.go.kr.