Freelancer Take-Home Pay Simulator (Japan) — Income Bracket Quick Reference

Enter your business revenue and expenses to instantly calculate take-home income after National Health Insurance, National Pension, income tax, and resident tax are deducted. Includes quick reference figures for income levels like ¥6M-¥10M. Built for Japan's self-employed, unlike the employee-focused "Net Salary Calculator".

National Health Insurance rate model (FY2026, Tokyo special wards)

The income-based rates, per-capita amounts, and caps this tool uses as its baseline. Check your own municipality's published rates for an accurate figure.

Category	Income-based rate	Per-capita amount	Annual cap
Medical portion	7.51%	47,600 JPY	670,000 JPY
Elderly support portion	2.80%	17,600 JPY	260,000 JPY
Long-term care portion (age 40–64)	2.43%	17,800 JPY	170,000 JPY
Child-rearing support portion (new in FY2026)	0.27%	1,873 JPY	30,000 JPY

Source: based on published Tokyo special-ward materials, e.g. Shinjuku City's "How National Health Insurance premiums are calculated (FY2026)".

How freelance take-home pay works in Japan

For a freelancer in Japan, take-home pay is what remains after subtracting business expenses, then National Health Insurance, National Pension, income tax and resident tax. The decisive difference from being an employee is that there is no employer to split social insurance with, so the full premium comes out of your own earnings. Enter your revenue and expenses and this calculator works through each item and shows the breakdown.

One point often misunderstood: the Blue Return deduction only affects the tax calculation. The cash actually left in your hands is revenue minus expenses minus social insurance minus tax, so claiming the deduction lowers your tax bill without adding to your income. Note also that National Health Insurance rates vary considerably between municipalities; this estimate uses the Tokyo special wards as its reference model.

How to estimate your freelance take-home pay

Enter revenue and expenses Give your annual business revenue and deductible expenses in units of 10,000 yen, excluding consumption tax.
Choose your filing method Tick the Blue Return deduction if you meet the requirements, such as electronic filing. Leave it unchecked for a White Return.
Set your age bracket and dependents From age 40 a long-term care portion is added. Dependents affect both the per-capita insurance charge and your tax deductions.
Review the breakdown Pension, each portion of National Health Insurance, income tax and resident tax are listed separately so you can see where the weight falls.

Tips for getting more out of it

The employee-focused "Net Salary Calculator" assumes Employees' Health Insurance and Employees' Pension split with an employer. The biggest difference for freelancers is that National Health Insurance and National Pension are paid entirely out of pocket.
To apply the ¥650,000 Blue Return deduction, you must meet requirements such as e-Tax electronic filing or electronic bookkeeping. Otherwise the deduction drops to ¥100,000, or to nothing under a White Return.
National Health Insurance premiums are based on last year's income, so in your first year of business they're still based on your prior salary or other income — not yet your freelance earnings.
More dependents raise the National Health Insurance per-capita and child-rearing support charges, but this is partly offset by dependent deductions on income tax and resident tax.

When this calculator is useful

Deciding whether to go independent

See what happens to your take-home pay if you bill the same amount you currently earn as salary. Comparing against the employee calculator makes the gap concrete.

Setting your minimum rates

Work backwards from the take-home figure you need to find the annual revenue required, then divide by your capacity to get a defensible day or project rate.

Setting aside money for tax

The combined total of income tax, resident tax, health insurance and pension tells you how much of each payment you should leave untouched.

Weighing up the Blue Return

Toggle the deduction on and off to see the tax difference, and judge whether it justifies the double-entry bookkeeping it requires.

Terms used on this page

Business income: Revenue minus deductible expenses and the Blue Return deduction. Income tax and resident tax are both calculated from this figure.
Blue Return deduction: A deduction available to filers who keep proper books and meet filing requirements. Worth ¥650,000 with electronic filing, otherwise ¥100,000.
Income-based portion: The part of National Health Insurance that scales with earnings, calculated from last year's income after a basic deduction.
Per-capita portion: A flat charge levied per insured person in the household, so it rises with the number of dependents.
Assessment cap: The upper limit on National Health Insurance premiums. Once income passes a certain level, the premium stops increasing.
Category 2 insured person: The long-term care insurance bracket covering ages 40 to 64, during which an extra portion is added to health insurance.

FAQ

It's the sum of an income-based charge — last year's income minus a ¥430,000 basic deduction, multiplied by the rate for the medical, elderly-support, long-term-care (age 40–64), and child-rearing-support (new in FY2026) portions — plus a flat per-capita amount based on household size. Both the rates and per-capita amounts are set by each municipality.

Employees' Pension is generally more favorable on a simple comparison, since premiums are split with an employer and it pays a larger benefit later. However, freelancers can supplement their National Pension with the National Pension Fund or iDeCo (individual defined-contribution pension) to design their own retirement savings.

A Blue Return lets you claim a special deduction of ¥650,000 (or ¥550,000/¥100,000) that lowers your tax burden, but requires double-entry bookkeeping and attaching financial statements to your tax return. A White Return needs simpler bookkeeping but has no special deduction. The larger your business, the more the Blue Return's benefits tend to outweigh the extra bookkeeping effort.

Many municipalities offer reduction programs for a sharp drop in income from the prior year, or for involuntary unemployment. Incorporating as a small ("micro") company and re-enrolling in employees' social insurance can also lower the burden in some cases, but you'll need to weigh that against the costs of running a company.

Side Note — The freelancer's "social insurance wall"

People who leave salaried employment to freelance are often shocked by how heavy social insurance premiums feel. As an employee, health insurance and pension premiums were split with an employer; as a freelancer, National Health Insurance and National Pension are, in principle, paid entirely out of pocket. Even at the same income level, take-home pay after going independent often feels much lower — largely because the employer's matching share disappears.

National Health Insurance caps its premiums (賦課限度額) to soften the "regressive" effect where high earners would otherwise pay a shrinking share of their income, while keeping the system's finances predictable. Starting FY2026, a new child-rearing support portion was added on top of the medical, elderly-support, and long-term-care portions, raising the combined cap to ¥1.13 million. It was introduced as a way to fund childcare policy broadly through the working generation's health insurance system.

To soften this burden, Japan offers freelancer-oriented "supplementary pension and retirement" schemes: the Small Enterprise Mutual Aid, the National Pension Fund, and iDeCo (individual defined-contribution pension). Contributions to all three are fully deductible from taxable income, letting freelancers build future savings and reduce their tax burden without increasing their social insurance premiums — a distinctly different lever from an employee's Employees' Pension.

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