When a founding team in Tokyo decides to grant stock options for the first time, the question that comes up fastest is rarely "how much equity?" It is: will this actually be worth anything for the recipient, or will taxes eat most of the upside?
Japan's answer to that question is zeisei-tekikaku kabushiki-kaitaku-ken, commonly shortened to zeisei-tekikaku, or "tax-qualified stock options." The regime sits under Article 29-2 of the Act on Special Measures Concerning Taxation (Sozei Tokubetsu Sochi Ho). When your option grants qualify under this article, employees owe no income tax at grant, no income tax when they exercise, and only capital gains tax when they sell the shares. That is the version of stock options that makes equity work as a retention tool.
The version that does not qualify gets taxed as ordinary income at exercise, at rates that can exceed 55 percent combined national and local. That outcome has killed the motivational value of many a well-intentioned option grant in Japan. Understanding the difference before you issue your first grant is not optional.
What the qualification requirements actually say
The statutory checklist for zeisei-tekikaku treatment has several components, and each one matters. Missing any single condition disqualifies the entire grant for the favored tax treatment, even if the option documents themselves look correct.
First, the exercise price must equal or exceed the fair market value of the underlying share at the date of grant. For an unlisted company, this is not a market quote; it is a calculated value, and the method of calculation is prescribed. We cover the FMV determination process in a separate article, but the key point here is that you cannot set an artificially low exercise price and claim qualified status.
Second, the option must not be transferable to a third party. Zeisei-tekikaku options are strictly personal; the rights cannot be assigned or pledged as collateral.
Third, the option agreement must be executed as a written contract between the company and the individual holder. Verbal agreements or unsigned offer letters do not satisfy the documentation requirement.
Fourth, the exercise period must begin at least two years after the grant date and must end no later than ten years after grant. The two-year minimum is the rule most founders accidentally violate when they want to give an early employee a short cliff and immediate exercise rights.
Fifth, the total exercise value per holder per calendar year must not exceed 12 million yen. This is the annual exercise cap. An employee holding a large grant who tries to exercise all at once will exceed this limit; the excess will be treated as ordinary income.
Sixth, for shares issued upon exercise to receive the capital-gains treatment at disposal, those shares must be deposited with a securities company or similar custodian that has a specific written contract with your company. This custodial deposit requirement is a practical hurdle that catches many companies off guard at the time of exercise, not at the time of grant.
The company-side obligations
Running a compliant zeisei-tekikaku program requires more than getting the option agreement language right. There are ongoing obligations that the company must track and document.
The board resolution authorizing the grant must contain specific language under Article 238 and related provisions of the Companies Act (Kaisha-ho). Missing or vague board language is one of the most common compliance gaps we see in cap tables that companies bring to us after the fact. A board minute that simply says "we hereby grant 100 options to Tanaka-san" at a round number exercise price, without the statutory elements, is insufficient.
You also need to maintain a register of option holders that tracks each holder's grant date, exercise price, number of options, and the applicable exercise period. When a holder leaves the company, the register must be updated. When options vest or are forfeited, the register must reflect that. This is the administrative layer that tends to collapse under spreadsheet management as your team grows past the first dozen hires.
The 12 million yen exercise cap in practice
The 12 million yen annual exercise cap sounds generous, and at current share prices for most early-stage companies it often is. But the cap applies to the exercise price value, not the market value at the time of exercise. As your company's valuation grows between grant and exercise, employees may be sitting on options with an aggregate exercise value that exceeds 12 million yen. Planning exercise timing becomes important.
Consider a scenario: an engineer joins a Shibuya-based SaaS startup in 2024 when the exercise price is 1,000 yen per share. They receive 20,000 options, for a total exercise value of 20 million yen. Under the annual cap, they cannot exercise all at once. They would need to spread the exercise over at least two calendar years to stay within the qualified regime. If the company is heading toward a TSE listing, the timing of that exercise window matters enormously, because post-IPO market prices will determine the capital gain.
We are not saying the 12 million yen cap makes large grants unworkable. We are saying that grant size, exercise price, and anticipated timeline to liquidity need to be modeled together, not set in isolation.
When qualified treatment is not available
There are cases where zeisei-tekikaku treatment is genuinely not accessible. The most common is for non-resident employees. Japan's qualified option regime applies to individuals who are tax residents of Japan at the time of exercise. An engineer who has relocated abroad when options vest will not receive the favorable treatment, regardless of how the grant was structured.
Another case is when the exercise price at the time of grant was set below fair market value. If a company's informal valuation at grant was 500 yen per share and the exercise price was set at 100 yen, the grant does not qualify. We see this most often in very early companies where founders set option prices without formalizing a valuation process.
Non-qualified options are not worthless. They are still equity participation. But the tax outcome at exercise is materially different, and employees who were told they were receiving "qualified options" and later discover they are not have a legitimate grievance. Getting this right at issuance protects both the company and the recipient.
Setting up for compliance from the first grant
The administrative overhead of a compliant zeisei-tekikaku program is not enormous, but it is specific. The board resolution, the option agreement, the holder register, the custodial arrangement, the exercise cap tracking, and the year-end reporting all need to work together.
The companies that struggle most are those who try to reconstruct compliance retroactively. A Tokyo startup that issued grants informally in its first year, with no signed agreements and no board authorization, may have issued options that cannot be converted to qualified status without new grants at a new, probably higher, exercise price.
Starting with the right structure on the first grant costs less than you think. It means one solid board resolution template, one proper option agreement in the statutory form, and a tracking system that can show you, at any moment, each holder's position, exercise price, vesting status, and remaining exercise capacity under the annual cap. That is exactly what we built Nstock to handle, because we saw too many companies get to a fundraise or an IPO process and discover compliance gaps that could have been avoided at the outset.
If you are at the stage where you are thinking about your first option grants, the single most important thing you can do is get the exercise price valuation right, get the board authorization right, and get the agreement signed before the grant date. Everything else flows from those three steps.
