Gross vs Net Salary: How Take-Home Pay Compares in the US, South Korea, Germany, Japan and the UAE

A $100,000 salary is not $100,000 anywhere. See how income tax, social insurance and mandatory contributions turn the same gross pay into very different monthly net amounts — and why net is not the whole story.

Engineers comparing job offers across borders almost always compare the wrong number. Gross salary is what the employer pays; net salary is what reaches you; and the gap between them ranges from zero in Dubai to more than 40% in Germany. Below is how the deduction stack works in five common destinations, using a single benchmark — $100 000 gross per year — converted at approximate 2026 rates.

These are simplified estimates for a single filer with no dependents, standard deductions only. Real outcomes vary by city, marital status and employer; use them to understand the structure, then run your own numbers.

Benchmark: $100 000 gross, single, no dependents

What each deduction actually is

United States: progressive federal tax + flat payroll tax + state lottery

Federal brackets for 2025 run 10/12/22/24% up to about $100 000 taxable (after the $15 000 standard deduction). FICA is a flat 7.65% up to the Social Security wage base (~$176 000). State income tax is the wild card: none in TX, FL, WA, NV; ~5% in Massachusetts and Illinois; up to 9.3% at this income in California. Health insurance is not in the table — employer plans typically cost the employee $100–400/month in premiums plus deductibles, which narrows the gap to Europe considerably.

South Korea: moderate tax, but the 4 insurances are mandatory

Income tax is progressive (6% to 45%) with generous earned-income deductions; a ₩138 M earner lands around 10–12% effective, plus 10% of that as local income tax. The four social insurances (국민연금 4.5%, 건강보험 3.545% + long-term care, 고용보험 0.9%) add ~9.4%. Korea's net ratio (~80%) is among the best in the OECD at this level, and employer-provided lunch, bonuses and severance (퇴직금, an extra ~8.3% accrued) are on top.

Japan: the resident tax lag

National income tax is withheld monthly; resident tax (住民税) of ~10% is billed from June of the following year based on last year's income. New arrivals enjoy a "free" first year and then see their net drop. Social insurance (health ~5%, pension 9.15%, employment 0.6%) is split with the employer and has salary ceilings, so its effective rate falls above ¥10 M.

Germany: the highest deductions, the most included

Income tax reaches 42% marginal at ~€68 000. Social insurance (~20% employee share) is capped at contribution ceilings around €96 600 (pension) and €66 150 (health). The employer pays a matching ~20% on top of gross. In return: statutory health insurance covering the family at no extra cost, ~1.0% of salary in pension entitlement per year, 60% unemployment benefit for a year, and 20–30 days' minimum vacation. Add ~9% church tax on the income tax if you are registered with a church.

UAE: zero income tax, but not zero cost

No personal income tax, no social contributions for expatriates (Emiratis pay pension). Employers must provide health insurance. Instead of tax you face high rent (a one-bedroom in a central Dubai area easily AED 8 000–12 000/month) and the end-of-service gratuity replaces a pension. Net is gross — the comparison has to happen on the cost side.

Net is not the finish line: three adjustments

1. Add back what deductions buy. If a German payslip includes health insurance and a US one does not, add the US premium (say $250/month) to the US deductions before comparing.
2. Subtract housing. Rent varies more than tax does. $2 500 in Austin, $3 300 in San Francisco, €1 400 in Munich, ₩1.5 M in Seoul, ¥150 000 in Tokyo, AED 9 000 in Dubai for comparable one-bedrooms.
3. Adjust for purchasing power. Groceries, transport and childcare can differ by 2× between these cities. A PPP index (OECD, Numbeo) applied to the post-rent residual gives the most honest comparison.

The same $100 000, after rent

The ranking flips: Seoul, with mid-level tax and low rent, ends up second on the list, while high-gross San Francisco falls to last. Gross salary told you almost nothing.