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You just received a job offer in Japan. The salary looks great on paper — maybe ¥5,000,000 or ¥6,000,000 a year. But when your first payslip arrives, the number in your bank account looks noticeably smaller. Where did the rest go?
This is one of the most common surprises for expats and foreign workers in Japan. Japan’s payroll deduction system is thorough, with multiple layers of tax and social insurance contributions taken out before you ever see your money. Understanding exactly what gets deducted — and why — helps you budget accurately, plan your finances, and find legitimate ways to reduce your tax burden.
This guide walks you through every major deduction in Japan’s salary system for 2026, with a concrete worked example using a ¥5,000,000 annual salary. By the end, you will know how to estimate your actual take-home pay with reasonable accuracy.
Japan’s Salary Deduction System Overview
Japan operates a withholding tax system (源泉徴収, gensen choshu). Your employer calculates and deducts most taxes and social insurance premiums directly from your monthly salary before it is deposited into your account. You rarely need to file a separate tax return if you are a standard company employee — your employer handles it through the year-end tax adjustment (年末調整, nenmatsu chosei).
There are five main categories of deductions to understand.
1. Income Tax (所得税, Shotokuzei)
Income tax is a national tax levied by the Japanese government. The rates are progressive, meaning higher earnings are taxed at higher marginal rates. The tax is calculated not on your gross salary but on your taxable income, which is your gross salary minus various deductions (the employment income deduction, personal deduction, dependent deductions, social insurance premium deduction, and others).
The 2026 income tax brackets for employment income are:
| Taxable Income (after deductions) | Tax Rate | Deduction Amount |
|---|---|---|
| Up to ¥1,950,000 | 5% | ¥0 |
| ¥1,950,001 – ¥3,300,000 | 10% | ¥97,500 |
| ¥3,300,001 – ¥6,950,000 | 20% | ¥427,500 |
| ¥6,950,001 – ¥9,000,000 | 23% | ¥636,000 |
| ¥9,000,001 – ¥18,000,000 | 33% | ¥1,536,000 |
| ¥18,000,001 – ¥40,000,000 | 40% | ¥2,796,000 |
| Over ¥40,000,000 | 45% | ¥4,796,000 |
Note: A 2.1%復興特別所得税 (reconstruction special income tax) surcharge is added to the base income tax amount. This surcharge has been in place since 2013 following the Great East Japan Earthquake and continues through 2037.
2. Residence Tax (住民税, Juuminzei)
Residence tax is a local tax paid to the municipality (city or ward) and prefecture where you live. Unlike income tax, it is assessed on the previous year’s income and collected from June of the following year. This creates an important timing effect for newcomers: in your first year working in Japan, you typically pay no residence tax because you had no prior-year Japan income. From your second year onward, expect a significant deduction.
The standard rate is approximately 10% of taxable income, split between the municipal portion (6%) and the prefectural portion (4%). A small per-capita levy (均等割, kinto wari) of roughly ¥5,000–¥6,000 per year is also added regardless of income level.
3. Health Insurance (健康保険, Kenko Hoken)
Most company employees in Japan join their employer’s health insurance scheme, either through a society-managed health insurance association (健康保険組合, kenko hoken kumiai) or the national Japan Health Insurance Association (協会けんぽ, kyokai kenpo). Premiums are calculated as a percentage of your standardized monthly salary (標準報酬月額, hyojun hoshu getsugaku).
The employee share of the premium under kyokai kenpo varies by prefecture. For Tokyo in 2026, the total premium rate is approximately 9.98% of the standardized monthly salary, split roughly equally between employer and employee. The employee pays approximately 4.99%.
A separate long-term care insurance premium (介護保険, kaigo hoken) applies to employees aged 40–64, adding roughly an additional 0.9% employee contribution.
4. Pension Insurance (厚生年金保険, Kosei Nenkin Hoken)
Employees enrolled in the corporate pension system (厚生年金) pay a fixed rate regardless of prefecture. The total premium rate is 18.3% of the standardized monthly salary, split equally between employee and employer. The employee contribution is 9.15%.
This is one of the largest deductions on your payslip. However, it is not money lost — it is a contribution toward your future pension entitlement. As a foreign worker, you may also be able to claim a lump-sum withdrawal (脱退一時金, dattai ichijikin) of a portion of your contributions when you leave Japan permanently, depending on your country of origin’s social security agreement with Japan.
5. Employment Insurance (雇用保険, Koyo Hoken)
Employment insurance is Japan’s unemployment benefit system. The employee contribution rate for general workers in 2026 is 0.6% of total wages. This is a relatively minor deduction but still worth accounting for.
Step-by-Step Take-Home Pay Calculation
Let’s work through a concrete example using a ¥5,000,000 annual gross salary for a single person in Tokyo with no dependents, aged under 40.
Assumptions:
- Gross annual salary: ¥5,000,000
- Monthly gross salary: approximately ¥416,667
- Tokyo resident, kyokai kenpo member
- Single, no dependents, under 40 years old
- Full year of employment (residence tax applied)
Step 1: Social Insurance Premiums
Social insurance premiums are calculated on the standardized monthly salary. For a monthly gross of approximately ¥416,667, the standardized monthly salary grade is ¥410,000.
| Deduction | Rate (employee) | Monthly Amount | Annual Amount |
|---|---|---|---|
| Health Insurance (Tokyo, kyokai kenpo) | 4.99% | ¥20,459 | ¥245,508 |
| Pension Insurance | 9.15% | ¥37,515 | ¥450,180 |
| Employment Insurance | 0.6% | ¥2,500 | ¥30,000 |
| Total Social Insurance | ¥60,474 | ¥725,688 |
Step 2: Employment Income Deduction (給与所得控除)
Japan allows a deduction against gross employment income before calculating taxable income. For a ¥5,000,000 gross salary, the employment income deduction in 2026 is:
¥1,440,000 (fixed deduction for incomes between ¥3,600,001 and ¥6,600,000: 10% of income + ¥1,100,000, or use the statutory table)
For ¥5,000,000: (¥5,000,000 × 20%) − ¥540,000 = ¥460,000
Wait — let me apply the correct 2026 formula:
- For gross salary between ¥1,800,001 and ¥3,600,000: 30% of gross − ¥108,000
- For gross salary between ¥3,600,001 and ¥6,600,000: 20% of gross + ¥54,000
- For gross salary between ¥6,600,001 and ¥8,500,000: 10% of gross + ¥714,000
- For gross salary over ¥8,500,000: flat ¥1,950,000 (cap)
For ¥5,000,000: (¥5,000,000 × 20%) + ¥54,000 = ¥1,000,000 + ¥54,000 = ¥1,054,000
Employment income (給与所得) = ¥5,000,000 − ¥1,054,000 = ¥3,946,000
Step 3: Calculate Taxable Income for Income Tax
From employment income, subtract:
- Social insurance premiums paid: ¥725,688
- Basic personal deduction (基礎控除): ¥480,000 (for income under ¥24,000,000)
Taxable income = ¥3,946,000 − ¥725,688 − ¥480,000 = ¥2,740,312 (rounded down to ¥2,740,000)
Step 4: Calculate Income Tax
Taxable income of ¥2,740,000 falls in the 10% bracket (¥1,950,001–¥3,300,000):
Income tax = (¥2,740,000 × 10%) − ¥97,500 = ¥274,000 − ¥97,500 = ¥176,500
Add 2.1% reconstruction surcharge: ¥176,500 × 1.021 = ¥180,207 (rounded)
Annual income tax: approximately ¥180,000
Step 5: Calculate Residence Tax
Residence tax is based on the previous year’s taxable income, but for our projection we use the same taxable income:
Municipal + prefectural rate: 10% of taxable income + per-capita levy = (¥2,740,000 × 10%) + ¥5,500 = ¥274,000 + ¥5,500 = ¥279,500
Annual residence tax: approximately ¥280,000
Step 6: Total Deductions and Take-Home Pay
| Item | Annual Amount |
|---|---|
| Gross Salary | ¥5,000,000 |
| − Health Insurance | ¥245,508 |
| − Pension Insurance | ¥450,180 |
| − Employment Insurance | ¥30,000 |
| − Income Tax (approx.) | ¥180,000 |
| − Residence Tax (approx.) | ¥280,000 |
| = Estimated Take-Home Pay | ¥1,814,312 … |
Wait — let’s add this up correctly:
Total deductions = ¥245,508 + ¥450,180 + ¥30,000 + ¥180,000 + ¥280,000 = ¥1,185,688
Estimated annual take-home pay = ¥5,000,000 − ¥1,185,688 = ¥3,814,312
Estimated monthly take-home pay = approximately ¥317,859
That means on a ¥5,000,000 gross salary, you take home roughly 76.3% of your gross pay, or about ¥318,000 per month. The effective deduction rate is approximately 23.7%.
For instant, accurate results tailored to your exact salary and situation, use our Take-Home Pay Calculator .
How Income Tax Brackets Work in Japan
Japan’s income tax system is marginal, which means only the portion of income that falls within each bracket is taxed at that bracket’s rate. A common misconception is that if your taxable income crosses into a higher bracket, all of your income is taxed at the new rate. This is not how it works.
Here is an example. Suppose your taxable income is ¥3,500,000:
- The first ¥1,950,000 is taxed at 5% = ¥97,500
- The remaining ¥1,550,000 (¥3,500,000 − ¥1,950,000) is taxed at 10% = ¥155,000
- Total income tax before surcharge = ¥97,500 + ¥155,000 = ¥252,500
Or using the bracket formula shortcut: (¥3,500,000 × 10%) − ¥97,500 = ¥350,000 − ¥97,500 = ¥252,500. The deduction amount in the formula accounts for the lower-bracket tax already applied to the portion below the threshold.
Full 2026 Income Tax Bracket Reference Table
| Taxable Income Range | Marginal Rate | Formula (rate × income − adjustment) |
|---|---|---|
| Up to ¥1,950,000 | 5% | Income × 5% |
| ¥1,950,001 – ¥3,300,000 | 10% | Income × 10% − ¥97,500 |
| ¥3,300,001 – ¥6,950,000 | 20% | Income × 20% − ¥427,500 |
| ¥6,950,001 – ¥9,000,000 | 23% | Income × 23% − ¥636,000 |
| ¥9,000,001 – ¥18,000,000 | 33% | Income × 33% − ¥1,536,000 |
| ¥18,000,001 – ¥40,000,000 | 40% | Income × 40% − ¥2,796,000 |
| Over ¥40,000,000 | 45% | Income × 45% − ¥4,796,000 |
The effective (average) income tax rate is always lower than the marginal rate because lower portions of income are taxed at lower rates. For most mid-range salaries in Japan, effective income tax rates before residence tax tend to fall in the 5–15% range.
What About Bonus Pay?
Bonuses in Japan are common, with many companies paying summer (夏季賞与, kaki shoyo) and winter (冬季賞与, toki shoyo) bonuses typically in June/July and December, respectively. Understanding how bonuses are taxed prevents unpleasant surprises.
Social insurance on bonuses is calculated at the same pension and health insurance rates as regular salary, applied to the bonus amount directly (with a cap on the annual bonus amount used for pension calculations at ¥5,730,000 per year).
Income tax on bonuses uses a different withholding method. Your employer looks at the income tax withheld from the previous month’s salary, determines the applicable withholding rate from a bonus withholding table, and applies that rate to the gross bonus amount after social insurance deductions.
The key point: bonuses do not push you into a higher tax bracket during the payment month. Your overall annual income tax is reconciled during the year-end tax adjustment (年末調整), so if too much was withheld throughout the year, you receive a refund in December.
Practical example: A ¥500,000 summer bonus on a ¥5,000,000 base salary might see deductions of approximately:
- Pension: ¥45,750 (9.15%)
- Health insurance: ¥24,950 (4.99%)
- Employment insurance: ¥3,000 (0.6%)
- Income tax withholding: approximately ¥30,000–¥50,000 (varies by previous month’s salary)
Leaving a net bonus of roughly ¥376,000–¥396,000 out of ¥500,000 gross.
Side Income and Extra Tax Obligations
Many workers in Japan supplement their main salary with freelance work, online businesses, rental income, investment gains, or other side income. The Japanese tax system has specific rules for this.
The ¥200,000 rule: If your side income (副業所得, fukugyo shotoku) totals more than ¥200,000 per year, you are required to file a final tax return (確定申告, kakutei shinkoku) with the tax office by March 15 of the following year. Your employer’s year-end adjustment only covers your employment income; side income must be declared separately.
How side income is taxed: Side income is added to your total income for the year and taxed at your marginal income tax rate. This means if you are already in the 20% bracket on your employment income, additional side income will also be taxed at 20% or higher. You may also owe additional residence tax, which is assessed in the following June.
Business expense deductions: If your side income is from freelancing or a small business, you can deduct legitimate business expenses (equipment, software subscriptions, internet costs used for the business, etc.) to reduce your taxable side income. Keeping clean records is essential.
Crypto and investment income: Capital gains from cryptocurrency are taxed as miscellaneous income (雑所得) at your marginal rate. Gains from stock trading in non-NISA accounts are typically taxed at a flat 20.315% (15% income tax + 2.1% surcharge + 3% residence tax equivalent) if you use a specific account type (申告分離課税).
To accurately track and calculate your side income taxes, use our Side Income Tax Calculator .
When your side income grows to the point where you need to manage invoices, expenses, and tax filings, freee is Japan’s most popular cloud accounting software. It handles invoice creation, expense tracking, and tax return preparation in Japanese — essential if you are navigating the Japanese tax system as a freelancer or small business owner.
Tips to Maximize Your Take-Home Pay
Japan offers several government-backed programs that can legitimately reduce your tax burden and increase your effective take-home pay. Here are the most impactful ones for employed workers.
iDeCo (Individual-type Defined Contribution Pension)
iDeCo (イデコ) is a self-directed pension plan where your contributions are fully deductible from taxable income. For an employee already enrolled in a corporate pension plan, you can contribute up to ¥12,000 per month (¥144,000 per year). That ¥144,000 annual contribution directly reduces your taxable income, saving you income tax at your marginal rate plus residence tax.
At a 20% income tax rate + 10% residence tax, a ¥144,000 iDeCo contribution saves approximately ¥43,200 per year in taxes. The money grows tax-free until withdrawal at age 60 or later.
The trade-off is that iDeCo funds are locked until retirement age, so only contribute what you can genuinely set aside long-term.
NISA (Nippon Individual Savings Account)
NISA is Japan’s version of a tax-free investment account. Under the reformed NISA system launched in 2024 and continuing in 2026, you can invest up to ¥3,600,000 per year (¥300,000/month) with capital gains and dividends completely tax-free indefinitely. The lifetime investment limit is ¥18,000,000.
Unlike iDeCo, NISA contributions are not deductible from taxable income — the tax benefit comes on the way out, with no tax on gains or dividends. NISA is ideal for medium-to-long-term savings goals, not just retirement.
See how much your investments could grow with our NISA Simulator .
Furusato Nozei (故郷納税 — Hometown Tax Donation)
Furusato nozei is a system that lets you redirect a portion of your residence tax to municipalities across Japan in exchange for local specialty goods as thank-you gifts. In 2026, the effective personal cost is just ¥2,000 regardless of how much you donate (up to your applicable limit).
For a ¥5,000,000 salary earner, the furusato nozei limit is approximately ¥60,000–¥70,000 per year. Donating that amount earns you local food products, crafts, or other goods worth a significant portion of the donation, while your total tax bill remains essentially the same (your residence tax is reduced by the donated amount, minus the ¥2,000 personal cost).
You must either use the one-stop special procedure (ワンストップ特例) or file a tax return to claim the residence tax deduction.
Life Insurance and Medical Deductions
Premiums paid for qualifying life insurance (生命保険料控除) and medical expenses over ¥100,000 (医療費控除) can be deducted from taxable income, though you typically need to file a tax return to claim medical expense deductions.
Conclusion
Japan’s deduction system can feel complex at first, but once you understand the structure, it becomes predictable. The main deductions to plan around for most employed workers are:
- Pension (9.15% employee share) — the largest single deduction
- Health insurance (~5% employee share) — varies slightly by prefecture and association
- Income tax (5–45% marginal, but typically 5–20% effective for mid-range incomes)
- Residence tax (~10% of taxable income, starting from your second year in Japan)
- Employment insurance (0.6%) — relatively minor
For a ¥5,000,000 gross salary in Tokyo, expect to take home roughly ¥3,800,000–¥3,900,000 per year (approximately ¥316,000–¥325,000 per month), depending on your exact insurance rate, deductions, and personal situation.
The best way to improve your take-home pay is not to avoid paying taxes — it is to use the tools the government provides: iDeCo for tax-deferred retirement savings, NISA for tax-free investment growth, and furusato nozei to get real value from your residence tax.
Use our Take-Home Pay Calculator to run the numbers for your specific salary and situation, and our Side Income Tax Calculator if you have freelance or investment income to account for.
Understanding your payslip is the first step to managing your money confidently in Japan.
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Disclaimer: This article provides general information about Japan’s tax and social insurance system as of 2026. Individual circumstances vary. For advice on your specific tax situation, consult a qualified tax accountant (税理士, zeirishi) or the Japan National Tax Agency (国税庁) website at nta.go.jp.