Your First Japanese Payslip, Decoded

Quick Answer: Your Japanese take-home pay is lower than your contract salary because of four deductions: income tax withholding (源泉徴収), social insurance (health ~5%, pension 9.15%, employment 0.5% of your salary), and — from your second year — resident tax at roughly 10% of your previous year's income. A ¥300,000 gross salary often lands closer to ¥235,000–¥245,000. Most of your tax is squared up automatically at year-end (年末調整), so many employees never file a return.

You signed a contract for one number, and a different, smaller number showed up in your account. That gap is the single most common surprise for foreigners on their first Japanese payslip — and understanding it is the difference between feeling underpaid and knowing exactly where your money goes. This guide decodes each line.

This is educational information, not tax advice. Rates vary by prefecture, age, and income and change over time — confirm your specifics with your employer's HR, your health-insurance provider, or the NTA.

Part of our First Year in Japan: Money Starter Kit — the 30/60/90-day path for newcomers.

Why is your take-home pay lower than your contract salary?

Your contract states your gross salary (額面). What lands in your bank is your net or take-home pay (手取り) — gross minus taxes and social insurance. As a rough rule, take-home is around 75–85% of gross for a typical first-year employee, before resident tax kicks in. That's not your employer shortchanging you; it's the standard set of deductions every employee pays.

This is also why comparing job offers on gross salary alone is misleading. To see what a given salary actually leaves you, run it through the free Japan Tax Calculator.

What's actually deducted from a Japanese payslip?

Four things, in two buckets.

Tax:

Social insurance (社会保険) — for FY2026, employee share:

These are calculated off your "standard monthly remuneration," not your exact salary, so the yen amounts stay steady month to month. Your pension and health contributions aren't lost money — they buy you a pension record and the High-Cost Medical Benefit that caps your medical bills.

Why did your take-home pay drop in your second year?

Because of the deduction that blindsides almost everyone: resident tax (住民税).

Resident tax is charged on your previous year's income, at roughly 10% (a flat local rate plus a small per-capita amount). In your first year in Japan you usually pay little or none — you had no prior-year Japanese income. Then from your second June, it's deducted from your monthly salary, and your take-home visibly drops even if your gross pay didn't change.

The trap: if you change jobs or leave Japan, that bill is based on income you already earned, so it can still follow you. Budget for it before it arrives — the mechanics of your take-home and how it feeds your savings rate are covered in Japan take-home pay and your FI capacity.

What is year-end adjustment (年末調整), and when do you file yourself?

Because monthly withholding is only an estimate, it has to be reconciled once a year.

If you're brand new to all of this, start with the companion guide, New to Working in Japan? The Money Set-Ups to Do First.

How this fits your bigger plan

Your payslip is where your savings rate is actually born. Once you can read it, you know your real monthly surplus — the number that determines how fast you reach financial independence. Direct that surplus into tax-advantaged investing through a NISA account, and model your timeline with the free PlanTogetherFI calculator.

PlanTogetherFI is for educational planning only. It is not financial, tax, or legal advice. Deduction rates vary by prefecture, age, and income and change over time — confirm your situation with your employer's HR, your health-insurance provider, or the NTA.

Frequently Asked Questions

Why is my take-home pay so much lower than my contract salary?

Your contract shows gross pay; your take-home is gross minus income tax withholding and social insurance (health, pension, employment insurance). For a typical first-year employee that's roughly 75–85% of gross, before resident tax starts in year two.

What are the main deductions on a Japanese payslip?

Income tax withholding (源泉徴収), Employees' Pension (9.15% employee share), health insurance (~5%, prefecture-dependent), and employment insurance (0.5% in FY2026). From your second year, resident tax at about 10% of your prior-year income is added.

Why did my salary go down in my second year in Japan?

Resident tax. It's based on your previous year's income and collected from June of the following year, so it typically starts in your second year and reduces your take-home even if your gross pay is unchanged.

Do I need to file a tax return in Japan as an employee?

Usually not — your employer's year-end adjustment (年末調整) settles your income tax. You file your own final return (確定申告) only for things it can't handle, like the medical expense deduction, overseas dependents, or side income.

Is social insurance the same as tax?

No. Social insurance (pension, health, employment) buys you benefits — a pension record, capped medical costs, unemployment cover — while income and resident tax fund public services. Both are deducted from your payslip, but they're separate systems.

Sources and further reading

Figures reflect FY2026 rules and vary by prefecture, age, and income. Always confirm your own deductions with your employer or the relevant authority.