Japan vs South Korea: Tax Comparison

Compare income tax rates and take-home pay between Japan and South Korea

You'd keep $2,416 more in South Korea

South Korea

26.4% tax

Japan · Tokyo

28.8% tax

$201/mo difference

Side-by-side breakdown

South Korea

2026

26%

Income

Gross Salary$100,000
Basic personal deduction-$1,015
Employment income deduction-$11,979
National Pension-$2,457
National Health Insurance-$4,067
Taxable Income$80,482

Taxes & Contributions

Up to KRW 14 million-$568
KRW 14 million to KRW 50 million-$3,653
KRW 50 million to KRW 88 million-$6,170
KRW 88 million to KRW 150 million-$7,331
Wage earner tax credit+$501
Up to KRW 14 million-$57
KRW 14 million to KRW 50 million-$365
KRW 50 million to KRW 88 million-$617
KRW 88 million to KRW 150 million-$733
National Pension-$2,457
National Health Insurance-$4,067
Employment Insurance-$900
Total Taxes-$26,419
NET ANNUAL PAY$73,581
Per Month$6,132
Effective Rate26.4%

Japan · Tokyo

2025

29%

Income

Gross Salary$100,000
Personal exemption (temporary 2025 rate)-$5,970
Earned income deduction-$12,255
Health insurance-$4,955
Welfare pension-$4,485
Unemployment insurance-$550
Taxable Income$71,785

Taxes & Contributions

5% bracket-$613
10% bracket-$848
20% bracket-$4,588
23% bracket-$2,963
33% bracket-$5,024
10% flat rate-$7,179
Personal exemption for local inhabitant's tax+$2,702
Health insurance-$4,955
Welfare pension-$4,485
Unemployment insurance-$550
Surtax (national income tax surcharge)-$295
Forest environmental tax-$6
Total Taxes-$28,835
NET ANNUAL PAY$71,165
Per Month$5,930
Effective Rate28.8%

Tax rate by income level

Japan
South Korea

Understanding the difference

Who Actually Lives Here

Japan attracts long-term residents and retirees seeking stability; South Korea pulls younger professionals and tech workers on shorter contracts. Japan's tax system rewards staying put, while Korea's structure assumes you might leave in a few years.

What You're Really Funding

Japan's higher local taxes buy you universal healthcare, bullet trains, and one of the world's best safety nets. Korea's lean social contributions mean lower deductions upfront, but you're paying for similar services through employer mandates and out-of-pocket costs that don't show up here.

The Expat Trap

Japan's earned income deduction is brutally generous if you earn under JPY 6.6 million but collapses as you climb, creating a weird mid-career tax cliff. Korea's employment income deduction stays gentler across the board, making it the more forgiving country if your income actually grows.

Bottom Line

Earn modest money in Japan and you'll pay less; earn serious money and Korea becomes the deal. Japan punishes success progressively; Korea just taxes it steadily. Pick based on whether you're building a 5-year contract or a 30-year life.

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