An Employee Share Option Plan (ESOP) turns your staff into part-owners. Structured well, it aligns incentives, retains talent, and defers cash compensation. Structured badly, it hands employees a tax bill they can’t afford and gives founders a messy cap table five years later.
This 2026 guide walks Singapore founders and HR heads through how to design and implement an ESOP that works for both the company and the employee.
What Is an ESOP?
An ESOP is a contractual right granted by a company to an employee to acquire shares in the company at a pre-agreed price, typically over a vesting schedule. The employee is not a shareholder until (and unless) they exercise the option. Alternative structures include:
- Restricted Stock Units (RSUs) — the employee is promised shares at vesting, no exercise price;
- Restricted Stock Awards (RSAs) — actual shares issued upfront but subject to vesting-based clawback;
- Phantom equity / SARs — cash payment linked to share value.
ESOPs remain the most common structure for Singapore startups because the tax treatment is well understood and IRAS provides established guidance.
Legal Framework
Singapore does not have a single ESOP statute. Instead, ESOPs sit at the intersection of:
- The Companies Act 1967 — allotment of shares, disapplication of pre-emption rights, financial assistance rules under Section 76;
- The company’s constitution — must permit the issue of options and the disapplication of pre-emption rights;
- IRAS tax rules on gains from employee share plans (see IRAS e-Tax Guide on “Gains from the Exercise of Stock Options / Awards”);
- Employment Act 1968 obligations;
- MAS Securities and Futures Act if the number of employees exceeds prospectus thresholds (rarely an issue for private companies).
Standard ESOP Design
1. Option pool size
The board reserves a share pool — typically 10–15% of the fully diluted cap table for seed-stage companies, 5–10% at Series B. Reserve the pool before the next funding round to protect founder dilution.
2. Vesting schedule
Market standard is 4 years with a 1-year cliff. The employee vests nothing until 12 months of service; on the 12-month anniversary, 25% vests instantly; the remaining 75% vests monthly (or quarterly) over the next 36 months.
3. Exercise price (strike price)
Set at fair market value on the grant date. For private companies, this is usually the last funding round’s price (or a modest discount thereof under a 409A-equivalent valuation). Grants below FMV create an immediate taxable benefit for the employee.
4. Exercise window
Historically 90 days after termination — but modern Singapore ESOPs increasingly offer 5-10 year post-termination exercise windows to accommodate employees who cannot afford to exercise on the way out.
5. Good leaver / bad leaver provisions
A “good leaver” (voluntary resignation, redundancy) keeps vested options. A “bad leaver” (dismissal for cause) loses all options, vested and unvested. Draft these carefully — the definitions become the flashpoint in every disgruntled-employee dispute.
6. Drag-along / tag-along
Option holders must sign onto the shareholders’ agreement’s drag-along provisions before exercise, so a future acquisition can proceed cleanly.
Tax Treatment for the Employee
IRAS treats the gain from ESOP as employment income taxable under Section 10(1)(b) of the Income Tax Act. The gain is calculated as:
Gain = Open Market Value at exercise − Exercise Price paid
The taxing event is normally the exercise date (not the vesting date, and not the sale date). For unlisted company options, IRAS accepts that the taxing event may be deferred to the date of sale of the shares — but only if the shares carry a genuine selling restriction.
Reporting via IR21/IR8A
The employer must report the gain on Form IR8A (or IR21 for outgoing foreign employees). Missing the reporting exposes the employer to penalties and interest.
Foreign employees — the tax clearance trap
A foreign employee resigning before selling ESOP shares must pass IRAS tax clearance. The employer must withhold enough money to cover the deemed tax on the gain — even if the employee has not yet sold the shares. This is where startups get it wrong most often.
Tax Treatment for the Company
Singapore does not currently allow companies to deduct the discount element of ESOPs as an expense (unlike the US). However, the company can deduct:
- Legal, valuation, and administration fees for setting up and running the ESOP;
- Any cash paid to buy back shares from a leaver.
Model the accounting expense carefully — FRS 102 requires the fair value of the option to be recognised as a P&L expense over the vesting period, even though there is no tax deduction. This creates a permanent difference on the tax computation.
Cap-Table and Companies Act Compliance
- Constitution check. Confirm the company’s constitution allows the issue of options and the waiver of pre-emption rights.
- Board resolution approving the ESOP scheme document, option pool, and template grant letter.
- Shareholder resolution if required by the constitution or shareholders’ agreement — most SHAs require investor consent to any option pool creation or top-up.
- Section 156 disclosure — if a director is receiving options, disclose the interest.
- Grant letter signed by employee and countersigned by the company.
- Option register maintained by the corporate secretary — see our statutory registers guide.
- On exercise — company allots shares, updates the register of members, and files Form 24 with ACRA.
Common Design Mistakes
- Verbal grants. “I’ll give you 1% at Series A” is not a valid option. Only signed grant letters create rights.
- Grant date vs. approval date confusion. The grant date for tax purposes is when the option is legally binding — not when the founder announced it in the offer letter.
- No cliff. Skipping the 1-year cliff means every 3-month hire walks with equity. This is almost never what founders intend.
- No good/bad leaver. Without clear definitions, terminated employees keep options and sit on the cap table indefinitely.
- Under-priced grants. Grants below FMV create a taxable benefit at grant date — bad for the employee.
- No pool refresh discipline. Founders keep granting from an empty pool. Regularly true up the pool alongside funding rounds.
Exit Mechanics — Where ESOPs Really Get Tested
On an acquisition, the ESOP is usually treated as follows:
- Vested options — the acquirer pays cash to option-holders equal to (share price × options) less exercise price.
- Unvested options — either accelerated (single or double trigger), rolled into replacement options in the acquirer, or cancelled.
- Tax event. The cash-out crystallises the tax gain. The employer must report and withhold accordingly.
- Escrow. A portion of the proceeds is typically held back for indemnity claims; option holders share this haircut proportionally.
Practical Tips for Founders
- Get the ESOP scheme document professionally drafted once — reuse the template across grants.
- Automate the option register via a cap-table tool (Carta, Ledgy, Pulley).
- Communicate honestly: employees should understand what their options are worth and what the tax bill looks like on exercise.
- Refresh the pool alongside funding rounds, not in reactive one-offs.
- Educate departing employees on the exercise deadline and cost.
Conclusion
An ESOP is a legal instrument, an HR tool, and a tax event bundled into one. Get the scheme document right at the start, run it through a proper cap-table system, and communicate the mechanics clearly to employees. When done well, an ESOP is one of the most powerful retention tools available to a Singapore startup — and, on exit, it turns loyal employees into millionaires without touching the founders’ own equity.
— The Editorial Team, Raffles Corporate Services