Who Qualifies?

The criteria every startup — and every investor — must understand before using Japan's Angel Tax System.

The Starting Point

Japan's Angel Tax System offers meaningful tax incentives — but only to those who meet a defined set of criteria.

Over the past six weeks, we have covered why startup investing belongs in a portfolio, how to manage risk, how to think about valuation, and how to read a term sheet. This week, we turn to the practical gateway that makes all of it relevant for Japanese investors: who actually qualifies for the Angel Tax System (エンジェル税制)?

There are two sets of requirements — those for the startup receiving investment, and those for the investor making it. Both must be met. Missing either means the tax benefits do not apply.

01 · The Startup Must Qualify

Not every company receiving investment is eligible. Japan's tax authority sets specific structural, age, and financial thresholds that a company must clear before investments into it qualify for tax relief.

Core eligibility requirements

Company age — Generally within 3 years of incorporation for the basic measure, or up to 10 years for the growth-stage measure (特定中小会社).

Structure — Must be a Japanese kabushiki kaisha (株式会社) or goudou kaisha (合同会社), incorporated in Japan.

Listing status — Unlisted. The company must not be listed on any Japanese securities exchange.

Share issuance — Shares must be newly issued. Investment must be made at the time of new share issuance (募集株式の発行). Secondary purchases of existing shares do not qualify.

Operating business — The company must have commenced business operations.

External investment — For some measures, the company must have received investment from a certified venture capital fund (認定ファンド), or independently meet financial screening criteria.

R&D or innovation — For the enhanced measure (優遇措置B), additional requirements around R&D expenditure or certified innovation status apply.

What disqualifies a startup

• The company has been operating beyond the applicable age threshold

• Shares are already listed on a domestic or foreign exchange

• The investment is into existing shares (secondary purchase), not newly issued shares

• The investor holds 50% or more of voting rights after investment

• The company was established through a corporate spin-off or restructuring of an existing business, not a genuine new venture

The system rewards genuinely early-stage, high-risk companies — not established businesses seeking capital.

02 · The Investor Must Also Qualify

Even when the startup clears all requirements, the individual investor must also meet their own conditions to claim the deduction or exemption.

Investor-side requirements

Individual taxpayer in Japan — Must be an individual (not a corporation) filing Japanese income taxes.

No controlling interest — At the time of investment and immediately after, the investor must not hold more than 50% of voting rights in the investee company. Family relationships are aggregated.

Not an employee of the company — The investor must not be a director, employee, or officer of the investee company at the time of investment.

Documentation — Payment receipts, share certificates, and a certification document (確認書) issued by the investee company must be retained for annual tax filing.

What the investor can claim

Two types of benefit are available depending on the measure and the company's qualification tier.

Measure A · Income deductionThe investment amount is deducted from gross income in the year of investment. Applicable to investments in companies within 3 years of founding. Subject to a cap — generally ¥10 million or 40% of gross income, whichever is lower. The deduction is reclaimed if shares are sold within 2 years.

Measure B · Capital gains offsetLosses on exit can be offset against capital gains from listed securities. Any remaining loss can be carried forward for up to 3 years. Applies to designated companies meeting R&D or certified innovation criteria. Can be combined with Measure A in some cases.

Important: These are general frameworks as of 2024–2025. Japan's Angel Tax rules have been updated several times, most recently in the 2023 tax reform.

Always verify current requirements with a qualified Japanese tax advisor (税理士) before making investment decisions based on tax treatment.

03 · After Investment: Maintaining Eligibility

Qualifying at the point of investment is necessary — but not sufficient. Ongoing conditions apply, and breaching them can result in clawback of the deduction already claimed.

• The investor must continue to hold shares for at least 2 years after investment. Early sale triggers repayment of the deduction.

• If the company lists during the holding period, seek clarification from a tax advisor on how timing affects treatment.

• The company must retain the qualifying status it held at time of investment. Material changes to business scope or corporate structure can affect this.

• On exit, any gain or loss must be properly reported in the investor's Japanese tax return. The system is not self-executing — accurate filing is the investor's responsibility.

The tax benefit is claimed upfront — but earned over time. Discipline in holding period and record-keeping is what protects it.

Key Takeaways

• Both the startup and the investor must independently meet qualification criteria for the Angel Tax System to apply

• Startups must generally be unlisted, recently incorporated, and issue new shares — not secondary transfers

• Investors must be individual Japanese taxpayers without a controlling interest in or employment relationship with the investee

• Two measures exist: income deduction (Measure A) and capital gains offset / loss carryforward (Measure B)

• Post-investment holding period and accurate tax filing are required to protect the benefit

• Rules have evolved and will continue to — always verify current requirements with a qualified tax professional