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Oct 18, 2026 Organization for Small & Medium Enterprises and Regional Innovation, JAPAN (SMRJ) Tax-saving information

Small Business Mutual Aid: premiums are fully deductible from income; benefits are treated as retirement income or miscellaneous incomeA national system for steadily saving up your own retirement allowance

Small Business Mutual Aid, run by SMRJ, is a savings-type retirement allowance system for owners, officers and sole proprietors of small businesses. The monthly premiums can be fully deducted from income in the tax return, and the benefits are treated as retirement income or as miscellaneous income from public pensions, depending on how they are received.

From joining to receiving benefits
  1. 1. JoinSet a premium from JPY 1,000 to JPY 70,000 a month
  2. 2. Pay premiumsYou can increase or decrease it after joining
  3. 3. FileDeduct the full premiums from income in the tax return
  4. 4. ReceiveReceive the benefit on retirement or closing the business
  5. 5. Tax treatmentLump sum is retirement income; installments are miscellaneous income

Key points

  • The monthly premium can be set freely from JPY 1,000 to JPY 70,000 in units of JPY 500, and can be increased or decreased after joining
  • The premiums can be fully deducted from taxable income in the tax return (income deduction)
  • Benefits can be received on retirement or closing the business, with no maturity or full-amount point. You can choose a lump sum, installments or a combination
  • A lump-sum benefit is treated as retirement income; benefits received in installments are treated as miscellaneous income from public pensions
  • Within the amount of premiums paid, members can use several business loan programs, including general loans
Who is affected: Owners and officers of small businesses and sole proprietors (people who want to prepare their own future retirement allowance)

What to do in practice

  • Keep the documents certifying the premiums paid each year, and do not miss declaring the income deduction in the tax return or year-end adjustment
  • The premium can be reviewed to match your business cash flow, so check the procedure on the official page if you want to increase or decrease it
Note: This article is a summary of SMRJ's system overview page. Please check the official guide for details on eligibility, the benefit amounts and handling on cancellation. How much your tax actually falls depends on your income and other factors, and differs from person to person.

People who work for a company may get a retirement allowance, but people who run their own shop or company basically do not. So there is a national system where you save money every month and receive it when you stop. The money you save can be subtracted from your income when taxes are worked out. This is not a trick: it is a system allowed by law.

Image of saving JPY 30,000 a month for one year
Monthly savings
JPY 30,000
x 12 months
JPY 360,000
Amount that can be subtracted from income
JPY 360,000

Points

  • You can decide your monthly savings yourself, from JPY 1,000 to JPY 70,000
  • All of what you save can be subtracted from your income when taxes are worked out
  • You receive it when you close your shop or company, for example. There is also a system that lets you borrow, depending on what you need the money for
For example: For example, if you save JPY 30,000 a month for one year, that is JPY 360,000 for the year. This JPY 360,000 is subtracted from the amount that your taxes are based on. (How much your tax actually falls differs from person to person.)

What the words mean

Income deduction
A system that subtracts a set amount from the amount your taxes are based on
Mutual aid benefit
The money you receive from your savings when you stop, for example
Sources (official)
Checked against the source on: Oct 18, 2026

Tax-saving information introduces systems permitted by law. Each has conditions for application, and this is not encouragement of tax avoidance. Please consult a tax accountant or other professional before applying.

This article summarizes and explains materials published by government agencies and is not advice on any individual case. Rules can change, so for actual procedures and decisions always check the latest original materials and consult professionals such as tax accountants or labor and social security attorneys. English, Simplified Chinese and Traditional Chinese versions are translations prepared from the Japanese articles for convenience. If anything differs, the Japanese text and the original source take precedence.

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