Japan Self-Employment Guide
A practical guide to working for yourself in Japan. Kojin Jigyo registration, income tax filing, Blue Return benefits, consumption tax, and the tools you need as a sole trader or freelancer.
HustleHub AI provides general information only, not tax, legal, or financial advice. Japanese tax and business rules vary by situation and visa status. Always check official guidance from the National Tax Agency (NTA) or consult a licensed tax accountant (zeirishi).
What self-employment means in Japan
In Japan, a sole proprietor is called Kojin Jigyo Nushi (individual business owner). You register directly with your local tax office by submitting a Kaigyou Todoke (Notification of Commencement of Business). There is no minimum capital requirement and no company formation needed.
Sole proprietors pay progressive income tax (shotokuzei), inhabitant tax (juminzei), and may need to register for consumption tax (shohizei). The Blue Return (Aoiro Shinkoku) system offers significant tax deductions of up to 650,000 yen if you maintain proper double-entry bookkeeping.
| Status | Tax filing | Liability | Registration |
|---|---|---|---|
| Employee (Kaishain) | Employer withholds via payroll | Employer's | None |
| Sole Proprietor (Kojin Jigyo) | Annual Kakutei Shinkoku by March 15 | Personal (unlimited) | Kaigyou Todoke to tax office |
| KK (Kabushiki Kaisha) | Corporation Tax + personal return | Limited to company assets | Legal Affairs Bureau + tax office + capital required |
Common forms of self-employment
Sole Proprietor
Kojin Jigyo NushiThe simplest structure. Submit a Kaigyou Todoke to your local tax office. No capital required. File annual Kakutei Shinkoku by March 15.
General Partnership
Nin'i KumiaiAn informal partnership for two or more people. Each partner files their own tax return. Not a separate legal entity.
Stock Company
Kabushiki Kaisha (KK)Separate legal entity registered at the Legal Affairs Bureau. Limited liability. Minimum 1 yen capital (practically, more is expected). Corporation tax applies.
How to register
Using your local tax office (Zeimusho)
Prepare your My Number Card
You need your My Number (Individual Number) and residence card (for foreign nationals) to interact with the tax office. If you do not have a My Number Card, bring your notification card and ID.
Submit the Kaigyou Todoke
File the Notification of Commencement of Business (Kaigyou Todoke) at your local tax office within one month of starting. The form is free and often processed the same day.
Apply for Blue Return (recommended)
Submit the Application for Blue Return Approval within two months of starting. This qualifies you for up to 650,000 yen in special deductions. Requires double-entry bookkeeping and e-Tax filing.
Evaluate consumption tax registration
If your taxable sales exceed 10 million yen over two prior years, registration is required. Under the Invoice System (since 2023), registration may be needed even below this threshold if your clients need qualified invoices.
Enrol in National Health Insurance
As a sole proprietor, you leave your employer's social insurance. Enrol in National Health Insurance (Kokumin Kenko Hoken) and National Pension (Kokumin Nenkin) at your local ward or city office.
Open a business bank account
Separating personal and business finances simplifies tax preparation. Many Japanese banks offer sole-proprietor accounts (kojin jigyo-you kouza).
Set up bookkeeping
For Blue Return, maintain double-entry bookkeeping (fukushiki boki). Cloud accounting tools like freee, Money Forward, or Yayoi are popular in Japan.
Consider a tax accountant (zeirishi)
A licensed tax accountant (zeirishi) can handle your Kakutei Shinkoku filing, optimize deductions, and advise on consumption tax strategy.
Key dates & deadlines
Tax year begins
Japanese tax year follows the calendar year.
Kakutei Shinkoku filing opens
Annual income tax return filing period begins.
Tax return deadline
Deadline to file your Kakutei Shinkoku and pay income tax for the previous year.
Consumption tax return deadline
If registered for consumption tax, file and pay by March 31.
Inhabitant tax notification
Inhabitant tax (juminzei) amount is determined and notified by your municipality, payable in four installments.
Tax year ends
Last day to make deductible business purchases for the current year.
Tax basics
Sole proprietors in Japan pay three main taxes: Income Tax (shotokuzei), Inhabitant Tax (juminzei), and potentially Consumption Tax (shohizei). Unlike employees, no tax is withheld at source for business income.
Income Tax (shotokuzei)
Progressive rates from 5% to 45% on net profit, plus a 2.1% reconstruction surtax on the income tax amount.
Inhabitant Tax (juminzei)
Approximately 10% of prior year taxable income, split between prefectural (~4%) and municipal (~6%) components.
Business Tax (kojin jigyo-zei)
Levied by the prefecture on certain business types. Rates vary by industry (typically 3-5%). A 2.9 million yen basic deduction applies.
Blue Return Deduction
If approved, deduct up to 650,000 yen from taxable income. Requires double-entry bookkeeping, balance sheet, and e-Tax filing.
Consumption Tax (shohizei)
10% (8% reduced rate for food/beverages). Registration required if taxable sales exceed 10 million yen, or to issue qualified invoices under the Invoice System.
Deductions
Business expenses wholly and exclusively for the trade are deductible: office rent, equipment, travel, communications, professional fees. Home office partial deduction allowed.
Consumption Tax (Shohizei)
Japan's consumption tax is 10% (8% reduced rate for food and non-alcoholic beverages). Sole proprietors must register if taxable sales exceed 10 million yen.
Standard Rate
10% on most goods and services.
Reduced Rate
8% on food, non-alcoholic beverages, and newspaper subscriptions.
Registration Threshold
Taxable sales exceeding 10 million yen over two base periods. Under the Invoice System, voluntary registration may be needed.
Invoice System (since Oct 2023)
Qualified invoices required for clients to claim input tax credits. Small businesses under 10M yen can register voluntarily.
Filing
Annual return due by March 31. Simplified calculation method available if prior year sales under 50 million yen.
Common mistakes to avoid
Not filing the Blue Return application
Missing the 650,000 yen deduction by not applying within 2 months of starting. The White Return (default) offers only 100,000 yen.
Ignoring the Invoice System
Since 2023, clients may refuse to work with unregistered sole proprietors because they cannot claim input tax credits on your invoices.
Not separating personal and business accounts
Makes bookkeeping difficult and risks issues during tax audits.
Forgetting inhabitant tax
Unlike income tax, inhabitant tax is billed later based on prior year income. Budget for it in advance.
Visa restrictions
Foreign nationals must have appropriate visa status. Working outside your visa category without permission can result in deportation.
Banking tools
Banking tool recommendations for Japan are coming soon.
Bookkeeping & accounting
Accounting tool recommendations for Japan are coming soon.
Official resources
Tax authority
Business registration
SME support portal
Getting-started checklist
- Prepare your My Number Card
- Submit the Kaigyou Todoke
- Apply for Blue Return (recommended)
- Evaluate consumption tax registration
- Enrol in National Health Insurance
- Open a business bank account
- Set up bookkeeping
- Consider a tax accountant (zeirishi)
Frequently asked questions
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