Shokibo Kigyo Kyosai - A Retirement Fund System for the Self-Employed
Shokibo Kigyo Kyosai (Small Enterprise Mutual Aid) is a retirement fund savings system for self-employed individuals and small business owners, operated by the Organization for Small & Medium Enterprises and Regional Innovation (SMRJ). Its greatest appeal is that contributions are fully deductible from income. Monthly contributions can be set from 1,000 yen to 70,000 yen in 500-yen increments, allowing up to 840,000 yen in annual income deductions. For a self-employed person with taxable income of 5 million yen contributing 70,000 yen per month, the combined income tax and resident tax savings amount to approximately 250,000 yen per year - effectively equivalent to an annual return of over 30%.
The tax benefits at withdrawal are equally significant. If received as a lump sum, the taishoku shotoku koujo (retirement income deduction) applies: for enrollment of 20 years or more, the deduction is 8 million yen + 700,000 yen × (years of enrollment - 20). If received in installments, the public pension income deduction applies. In other words, you enjoy a double tax advantage - income deduction when contributing and retirement income deduction (or pension deduction) when receiving - making this one of the most favorable wealth-building tools available to the self-employed.
Keiei Safety Kyosai - Combining Business Protection with Tax Savings
Keiei Safety Kyosai (officially the SME Bankruptcy Prevention Mutual Aid, also known as Keiei Safety Net Kyosai) is a mutual aid system designed to protect against the bankruptcy of business partners, but it is also extremely effective as a tax-saving tool. Monthly contributions range from 5,000 yen to 200,000 yen, and the full amount can be recorded as a deductible business expense. Up to 2.4 million yen per year can be expensed, with contributions accumulating up to a total of 8 million yen. After 40 months of enrollment, 100% of contributions are returned upon cancellation, giving it the character of a "fully deductible time deposit."
The strategic use of Keiei Safety Kyosai lies in income smoothing. Books on utilizing Keiei Safety Kyosai explain that by increasing contributions and recording them as expenses in high-profit years, then canceling and recording the refund as income in low-profit years, you can smooth out income peaks and valleys, mitigating the impact of progressive taxation. However, since the cancellation refund is taxed as business income, the timing of cancellation must be carefully planned.
Combining Both Systems for Up to 3.24 Million Yen in Annual Deductions
Shokibo Kigyo Kyosai and Keiei Safety Kyosai can be used simultaneously. Maximizing both yields 3.24 million yen per year in income deductions and expense deductions (840,000 yen from Shokibo Kigyo Kyosai + 2.4 million yen from Keiei Safety Kyosai). Adding iDeCo (individual-type defined contribution pension) at 68,000 yen per month (816,000 yen annually) brings the total to approximately 4.06 million yen in annual income deductions. For a self-employed person with taxable income of 8 million yen fully utilizing all three, the combined income tax and resident tax savings can exceed 1 million yen per year.
The typical priority order when combining these is to first maximize Shokibo Kigyo Kyosai (70,000 yen/month), then maximize iDeCo (68,000 yen/month), and add Keiei Safety Kyosai if funds permit. Comprehensive guides on tax savings and wealth building for the self-employed also cover how to adjust contributions based on business revenue fluctuations and the procedures for transitioning these systems when incorporating as a company. For the self-employed, not knowing about these systems translates directly into an opportunity cost of hundreds of thousands of yen per year.
Next Actions for the Self-Employed to Take Right Now
First, check your eligibility for Shokibo Kigyo Kyosai on the SMRJ official website and complete the enrollment process online or at a financial institution. Contributions start from just 1,000 yen per month, so you can join without strain even if your business revenue is not yet stable. Simply declaring the contributions as "Shokibo Kigyo Kyosai-to Kakekin Koujo" (small enterprise mutual aid contribution deduction) on your tax return delivers the tax savings. After enrollment, you can increase or decrease contributions according to business performance, so the important thing is to start small and understand the system.
Next, consider enrolling in Keiei Safety Kyosai. The requirement is that you have been operating your business for at least one year. By joining in a profitable year and recording contributions as expenses, you gain immediate tax savings. After enrolling in both Shokibo Kigyo Kyosai and Keiei Safety Kyosai, consider adding iDeCo if you have additional capacity. Combining all three systems enables over 4 million yen in annual income deductions, dramatically reducing the tax burden for the self-employed.