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Korea Year-End Tax Calculator (2025)

Estimate your Korean year-end tax settlement refund or extra payment for tax year 2025 from salary, family, card spending, pension savings, medical costs and rent.

Korea year-end tax estimate

Pay and tax already withheld

Gross salary (KRW)

KRW 40,000,000 · Annual pay excluding non-taxable items (total salary on the withholding receipt)

Income tax already withheld (KRW)

KRW 1,500,000 · Income tax taken from your pay over the year, excluding local income tax

Local income tax already withheld (KRW, optional)

Leave blank to use 10% of the withheld income tax

Family

Basic deduction for spouse

Other dependants claimed (excluding spouse)

Children, parents and so on with income of KRW 1 million or less (or salary of KRW 5 million or less if wages only)

Of whom, children

Children eligible for the child tax credit

For 2025: children and grandchildren aged 8 and over

Family members aged 70 and over

Family members with a disability

Working women’s deduction

Single-parent deduction

Cards and cash receipts

Enter traditional market, public transport and culture spending separately, not in the card amounts.

Credit card (KRW)

KRW 12,000,000

Debit card and cash receipts (KRW)

KRW 3,000,000

Traditional markets (KRW)

Public transport (KRW)

Books, shows, museums, cinema, pools, gyms (KRW)

30% only with salary of KRW 70 million or less. Pools and gyms count from 1 Jul 2025

Pensions and savings

Pension savings contributions (KRW)

IRP and retirement pension contributions (KRW)

Up to KRW 6 million for pension savings, KRW 9 million combined

Housing subscription savings (KRW)

Salary of KRW 70 million or less, homeless household head (spouse too from 2025), 40% of up to KRW 3 million

Insurance, medical and education

Protection-type insurance premiums (KRW)

Medical costs — other family members (KRW)

Medical costs — yourself, 65+, disabled, age 6 and under (KRW)

Infertility treatment (KRW)

Leave out anything reimbursed by private health insurance.

Education — yourself (KRW)

Education — university students (KRW)

Number of university students

Education — preschool to high school (KRW)

Number of preschool to high-school children

Donations, rent and marriage

General donations (KRW)

Political donations (KRW)

Up to KRW 100,000, 100/110 comes off your tax

Hometown Love donations (KRW)

Up to KRW 100,000, 100/110 comes off your tax

Total monthly rent for the year (KRW)

Homeless household head, salary of KRW 80 million or less, up to KRW 10 million

Marriage tax credit (marriage registered 2024–2026, once per lifetime)

Social insurance (blank = estimated from rates)

National Pension (KRW)

Estimate KRW 1,800,000

Health + long-term care insurance (KRW)

Estimate KRW 1,601,631

Employment insurance (KRW)

Estimate KRW 360,000

Estimated 2025 rates: National Pension 4.5% (annual cap KRW 3,385,800) · health 3.545% · long-term care 12.95% of the health premium · employment 0.9%. These were not re-checked against the agencies’ notices, so entering the actual amounts from your payslips is more accurate.

Estimated refund110,820KRWIncome tax −KRW 100,745 + local income tax −KRW 10,075

The employment income tax credit works out to KRW 949,976 but is capped at KRW 684,000 for your salary.

Comparing the two credit routes

Itemized deductionsKRW 1,399,255Better option

Standard credit KRW 130,000KRW 1,563,500

Claiming any insurance, medical, education, donation or rent deduction rules out the KRW 130,000 standard credit. Both routes are calculated and the one with lower tax is used.

The 25% card threshold

Spent KRW 15,000,000 / threshold KRW 10,000,000

Threshold passed. Deduction before limits KRW 1,200,000, basic limit KRW 3,000,000, extra limit KRW 0

How this amount is reached

Gross salary: KRW 40,000,000
Employment income deductionIncome Tax Act §47: −KRW 11,250,000
Employment income: KRW 28,750,000
Personal deductionsIncome Tax Act §50–51: −KRW 1,500,000
National Pension contributions (est.)Income Tax Act §51-3: −KRW 1,800,000
Health, long-term care and employment insurance (est.)Income Tax Act §52: −KRW 1,961,631
Card spending deductionRestriction of Special Taxation Act §126-2: −KRW 1,200,000
Tax base: KRW 22,288,369
Calculated taxIncome Tax Act §55 · marginal rate 15%: KRW 2,083,255
Employment income tax creditIncome Tax Act §59: −KRW 684,000
Final income tax: KRW 1,399,255
Local income tax (10%): KRW 139,925
Income tax already withheld: KRW 1,500,000

What if

Adding KRW 1 million to pension savings raises your refund by KRW 165,000.
Spending KRW 1 million more on a debit card by year end raises your refund by KRW 49,500.
Your marginal rate on this tax base is 15% (16.5% with local tax). A KRW 1 million income deduction cuts tax by about KRW 165,000.

Exact amounts are on Hometax

Hometax’s year-end settlement preview, which loads your employer’s payment statement and card spending, is the most accurate source. This is an estimate based only on what you enter.

Open Hometax

Treated as estimates: social insurance rates, the annual National Pension cap, and political and hometown donations above KRW 100,000 (counted only when itemizing).

Not covered by this calculator

SME employee income tax reduction, flat tax rate for foreign workers
Housing loan interest and lease loan repayments, Yellow Umbrella and venture investment, employee stock ownership, youth long-term funds, ISA rollovers
Joining or leaving mid-year, non-employment income, donation carry-forwards, the overall cap on special deductions
Insurance for people with disabilities, premature-baby medical costs, postnatal care limits in detail

Calculation basis

Statute text checked 2026-10-02. Employment income deduction, tax rates, employment income credit, child credit and special credits follow Korea’s Income Tax Act; card, housing subscription and rent rules follow the Restriction of Special Taxation Act. Amounts under KRW 1 are dropped at each step.

Amounts you enter are calculated in this browser only and are never saved or sent.

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How to use

Everything you enter is processed only in this browser.

Choose the tax year and enter your gross salary and the income tax already withheld
Add family, card spending, pension savings, medical, education, rent and so on
Check the estimated refund or extra payment, the calculation steps and the 25% card threshold

How it works and good to know

Based on South Korea’s rules for tax year 2025 (settled in January–February 2026). It applies the Income Tax Act’s employment income deduction (§47), tax rates (§55), employment income credit and its cap (§59), child credit (§59-2), pension account credit (§59-3) and special credits (§59-4), plus the card (§126-2), housing subscription (§87) and monthly rent (§95-2) rules of the Restriction of Special Taxation Act, dropping amounts under KRW 1 at each step. Itemizing and the KRW 130,000 standard credit are both calculated and the lower tax is used. Blank social insurance amounts are estimated from 2025 rates, so entering the figures from your payslips is more accurate. Check exact amounts with Hometax’s year-end settlement preview.

Korea Year-End Tax Calculator (2025)

Comparing the two credit routes

The 25% card threshold

What if

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Comparing the two credit routes

The 25% card threshold

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