Founder Vesting and ESOPs in Singapore: How to Set Them Up Properly

Most start-up equity disputes are not about valuation. They are about what was promised, to whom, and what happens when someone leaves. Founder vesting and employee share option plans (ESOPs) are essential tools for aligning incentives, protecting equity, and attracting talent while managing dilution and legal risk. Singapore company law does not impose automatic vesting or standardised equity plans, so founders must document these arrangements carefully through contracts, the company's constitution, and board or shareholder approvals. This guide breaks down how to set up founder vesting and ESOPs properly, covering the required legal documents, tax treatment, and common pitfalls to avoid.

Why Founder Vesting Exists

Picture three co-founders who split equity equally at incorporation. Six months later, one leaves to join a larger company. Under Singapore company law, that founder walks away with their full one-third stake. The remaining team and any future investors are left with a "dead equity" problem: a non-contributing former founder retains voting, economic, and exit rights that no longer reflect their contribution. There is no statutory claw-back, no automatic forfeiture, no court that will step in on fairness grounds alone.

This is the central problem that founder vesting solves. Vesting ensures that equity is earned progressively over a continuous period of service. If a founder departs early, the unvested portion is bought back by the company or transferred to the remaining founders. Singapore company law contains no automatic vesting mechanism; it must be drafted explicitly into a Shareholders' Agreement (SHA) or a standalone Founders' Vesting Agreement.

A standard founder vesting schedule spans four years with a one-year cliff. This means 25% of the shares vest on the one-year anniversary of the start date or incorporation, with the remaining 75% vesting in equal monthly or quarterly instalments over the subsequent 36 months.

Enforcement Mechanisms: Share Buy-Backs

Enforcement almost always uses reverse vesting coupled with buy-back rights. All founder shares are issued upfront, but the company (or remaining founders) has a contractual right to repurchase unvested shares at a nominal price (often the original subscription price) if the founder ceases to be involved. Vested shares may be subject to different treatment depending on “good leaver” versus “bad leaver” status. A bad leaver (typically termination for cause, such as misconduct or breach of fiduciary duty) often faces repurchase of vested shares at a discount or nominal value; a good leaver may retain vested shares or sell them at fair market value. Double-trigger acceleration (vesting accelerates only on a change of control plus termination without cause or resignation for good reason) is preferred by many investors.

These rights are set out in an SHA or a standalone founder vesting agreement. The company’s constitution must permit share buy-backs, and any actual repurchase must comply with Companies Act and solvency requirements. Pre-emption rights, drag-along and tag-along provisions, and transfer restrictions are usually included in the same SHA to keep the cap table clean.

Statutory Framework

A company may buy back its own shares under sections 76B to 76G of the Companies Act 1967. A purchase from one named founder is a selective off-market purchase under section 76D, which requires a special resolution. The selling shareholder and their associates cannot vote on that resolution. Payment must also be made while the company is solvent. The number of ordinary shares a company may buy back between the authorising resolution and its next AGM is also capped at 20% of its issued ordinary shares (section 76B(3)). In a small founder group, a departing founder's unvested shares can easily exceed that cap. This is one reason to give the buy-back right to the remaining founders as well as to the company.

The Corporate and Accounting Laws (Amendment) Act 2025 amended section 76D with effect from 6 May 2026. Where the shares to be bought are some, but not all, of a class, the company must first obtain the consent of holders of at least 75% of that class, excluding the seller and the seller's associates. Only then does the special resolution follow. In a start-up where the founders hold the same class of ordinary shares, the remaining founders' consent is in effect required. Because Tier 2 is framed as a consent rather than a resolution, the company can obtain it in writing from the relevant class holders without convening a separate class meeting. Tier 2 does not apply where the entire class of shares is being bought back.

Setting Up an Employee Share Option Plan

An ESOP (most commonly structured as an employee share option scheme or ESOS) gives employees the right, but not the obligation, to purchase company shares at a fixed exercise (strike) price after meeting vesting conditions. For early-stage start-ups that cannot match cash compensation offered by larger employers, this is the main equity incentive tool. Unlike founders, employees typically receive options rather than shares from day one.

Key Documents for a Formal ESOP

• ESOP Plan Rules: This is the master framework. It defines eligibility, administration, grant limits, vesting, exercise, exercise price, lapse, cessation of employment, corporate transactions, variation of capital, tax withholding, amendment powers and governing law.
• Board resolution: The board adopts the plan, approves the pool, appoints an administrator or remuneration committee if appropriate, and authorises individual grants within delegated limits.
• Shareholder approval and allotment authority: Where options will be satisfied by new shares, directors must have the prior approval of the company in general meeting to issue shares under section 161 of the Companies Act 1967. The authority, plan rules, constitution and investor documents must be consistent.
• Grant letters and an exercise notice: The bilateral agreement executed between the company and the individual employee setting forth the grant date, number of options, vesting milestones, and strike price.
• Option register and return of allotment: The company should keep an up-to-date option register recording each grant, vesting, exercise and lapse. Granting an option is not an allotment of shares, so no return of allotment is due at grant. The ACRA filing is triggered when shares are allotted on exercise. A public company must lodge the return within 14 days of the allotment. For a private company, the allotment takes effect only when ACRA updates the electronic register of members, so the return should be lodged promptly on exercise.

Taxation of ESOPs in Singapore

IRAS's published position is that gains from share options granted to a person employed in Singapore are taxed as employment income. No tax is generally payable on grant or vesting of an option.

• Options (ESOP): Tax generally arises when the option is exercised. The gain is the market price of the shares at exercise less the price paid. If the plan restricts sale of the shares, tax arises in the year the restriction ends.
• Share awards (ESOW): If there is no vesting period and no sale restriction, tax arises on grant. If a vesting period applies, tax arises on vesting.
• Departing non-citizens: A deemed-exercise rule can bring forward the tax when the employee stops working in Singapore.
• Deferral: Under the Qualified Employee Equity-based Remuneration Scheme, payment of the tax can be deferred for up to five years. Interest is charged, and the qualifying conditions are set out in IRAS's e-Tax Guide.

Common Mistakes to Avoid

• Informal promises:

A message, email or vague offer-letter language such as “you will get 5% when we raise” creates no shares and no enforceable vesting or leaver terms. Shares exist only once allotted and registered. Vague promises leave the terms uncertain and invite later disputes. If shares are in fact awarded with no vesting, IRAS may treat the gain as taxable in the year of grant.

• Neglecting board and shareholder approvals

Under section 161 of the Companies Act 1967, directors must not issue shares without the prior approval of the company in general meeting, and an issue made in breach of that section is void, with the consideration recoverable (section 161(6)). Issues or option grants made without proper board authority under the constitution are also open to challenge. Both defects create serious problems during due diligence in subsequent funding rounds.

• Inadequate vesting and leaver documentation

Vesting schedules, cliff periods, good-leaver/bad-leaver definitions, buy-back pricing and change-of-control mechanics must be clearly set out in the SHA or plan rules. Without them, a departing founder or employee may retain unvested equity, or the company may be unable to enforce a repurchase. Vague exercise-price language and missing acceleration clauses are equally common drafting failures.

Conclusion

Founder vesting and ESOPs are not legal formalities; they are foundational governance mechanisms that determine whether a start-up can raise capital, retain talent, and survive founder departures. The four-year schedule with a one-year cliff, enforced through share buy-back rights, is the prevailing market convention for founders in Singapore. A properly documented ESOP with clear plan rules, grant letters, and ACRA filings is equally essential for employees. Tax treatment, particularly the timing of taxable events, must be understood before grants are made. Above all, resist the temptation to rely on informal promises: equity that is not documented is equity that will be disputed. With the right legal and tax advisors, Singapore's framework supports efficient, compliant, and fair equity compensation, and the cost of getting it right upfront is far lower than the cost of fixing it during due diligence.