How Big Should Your ESOP Pool Be? Sizing the Pool Investors Expect

Here is the first thing to know, because most founders get it backwards: no law fixes the size of your ESOP pool. Not the Companies Act. Not the rules under it. There is no government percentage hiding in a notification somewhere, waiting to be looked up. The number in your scheme will come from two places only — the people you need to hire, and the investors you need to convince. Everything else is drafting.

That makes pool size a negotiation and planning question dressed up as a legal one. So let us separate the two. First, what the law actually controls. Then, where the percentages you keep hearing really come from, and how to land on a number you can defend in a term-sheet discussion.

What the law fixes — and pool size is not on the list

Shares under an employee stock option scheme are offered under section 62(1)(b) of the Companies Act, 2013, and for an unlisted company the procedure sits in Rule 12 of the Companies (Share Capital and Debentures) Rules, 2014. Read Rule 12 end to end and you will find approvals, disclosures and registers. You will not find a pool size.

What Rule 12 does require: the scheme must be approved by shareholders through a special resolution. The explanatory statement with that resolution must state the total number of options to be granted, the classes of employees entitled to take part, how eligibility is appraised, the vesting requirements and period, the exercise price or the formula for it, the exercise period, any lock-in, the maximum options per employee and in aggregate, how the options will be valued, when vested options lapse, and how quickly a departing employee must exercise. In other words, the law does not tell you how large the pool should be — it makes you write the number down, in advance, and defend it to your own shareholders.

Rule 12 also decides who can receive options at all. An "employee" here means a permanent employee of the company, a director who is not an independent director, and employees of a subsidiary or holding company — with promoters and directors holding over 10% kept out, subject to a relaxation for startups in their first ten years. Consultants and advisors, whatever your pitch deck calls them, are not on that list. Two situations need a separate shareholder resolution on top of the scheme approval: grants to employees of a subsidiary or holding company, and a grant to identified employees in any one year that reaches 1% or more of the issued capital. And one vesting rule is statutory, not a drafting choice: Rule 12(6)(a) sets a minimum of one year between the grant of an option and its vesting. Beyond that single floor, the shape of vesting is yours to design. For listed companies, this entire route changes — their schemes run under the SEBI (Share Based Employee Benefits and Sweat Equity) Regulations, 2021, not Rule 12.

Where the 10–15% figure actually comes from

From term sheets. In the seed and Series A term sheets I see, investors typically ask for an option pool of 10–15% of the fully diluted capital — around 10% at seed, drifting towards 12–15% by Series A, when the senior hiring plan gets heavier. Treat that as market convention, because that is all it is. It is not a statutory figure, not a SEBI figure, and not the output of any survey I would put my name to. It is simply the range that keeps appearing across the table, and an investor asking for it is really asking a different question: will this company be able to hire the next ten senior people without coming back to renegotiate the cap table every time?

That question points to the honest way of sizing a pool — backwards, from a hiring plan. List the roles you genuinely expect to fill with equity-bearing offers over the next eighteen to twenty-four months: the heads, the senior engineers, the people you cannot pay full market salary to. Attach a sensible equity range to each role, add a margin for grants below leadership level and for the offers that get negotiated up, and total it. If the total lands near 10%, you have your answer and a story to tell with it. If it lands at 6%, a demand for 15% is asking you to dilute for hires you do not plan to make. If it lands at 17%, your hiring plan is the problem to fix, not the pool. A pool built this way survives diligence questions. A pool copied from another company's deck does not.

Fully diluted: the denominator your investor is using

When an investor says "a 10% pool", the percentage is of fully diluted capital — every share that exists or could exist: founders' shares, investors' shares, convertible instruments counted as converted, and the option pool itself, granted and ungranted alike. Founders often hear 10% as 10% of today's share capital. It is not. On a fully diluted base the pool is a bigger absolute number of shares than the founders' quick calculation suggests, and the gap has soured more than one signing-week conversation I have been part of. Before you agree a percentage in a term sheet, get the fully diluted count on one page and check the pool against it. One page. Every time.

Pre-money or post-money: who actually pays for the pool

This is the clause founders misread most, and it decides who bears the pool's dilution. If the pool is created or topped up pre-money — before the new investor's stake is calculated — the dilution falls on the existing shareholders alone. If it is created post-money, everyone, investor included, shares it.

An illustration, with round invented numbers so the arithmetic is easy to follow. Say the founders hold 100% today and an investor is to take 25% in this round, with a 10% pool agreed:

Same pool. Same investor cheque. The only difference is the order of the steps, and it costs the founders 2.5 percentage points of their own company. Think of the pre-money pool as portions served from the founders' share of the meal before the guest's plate is even set — the guest eats exactly what was promised, and the topping-up comes out of the hosts' side. Neither structure is dishonest; pre-money pools are the common ask. But it should be agreed with open eyes, and a founder who understands the table above negotiates differently — sometimes on the percentage, sometimes on the timing, sometimes on a smaller pool with a committed top-up at the next round.

The decisions to settle before anyone drafts

Pool size is the headline, but a scheme drafted before the surrounding decisions are made will come back for rework. Settle these first:

• Authorised capital headroom. Options become real shares on exercise through a fresh issue, and issued capital cannot cross the authorised capital in your memorandum. Check whether the pool fits inside the existing authorised capital; if it does not, the increase and the memorandum change go on the approvals list before the scheme, not after.
• Fresh issue or trust route. Most young companies issue fresh shares on exercise, straight to the employee. A trust route — where an ESOP trust holds shares for employees — exists and suits some mature setups, but it adds a layer of administration a seed-stage company rarely needs. Decide consciously; do not drift into either.
• Who is in. Rule 12's definition sets the boundary — permanent employees and eligible directors, group-company employees only with that separate resolution. Write the classes into the scheme as the explanatory statement requires.
• Exercise price basis. Rule 12 leaves the company free to set the exercise price, but the basis must be stated and a valuation will be needed to support it when tax is computed at exercise. Pick the basis now.
• Vesting shape and the exercise window. The one-year minimum between grant and vesting is fixed by Rule 12(6)(a). Everything beyond it — the cliff, the monthly or quarterly spread after it, how long a person has to exercise after vesting or after leaving — is a scheme term. These are retention decisions, not legal defaults. Make them as retention decisions.

Our complete guide to ESOPs in India covers the full mechanics — resolutions, filings, the SH-6 register — so I have kept this article on the sizing question alone.

Getting the size wrong, in both directions

Too small is the obvious failure. The pool runs dry mid-hiring-plan, and every top-up means fresh shareholder approvals and, mid-round, a negotiation you conduct from weakness. Too large fails more quietly. A fat unallocated pool sits on the fully diluted count through every later round, every incoming investor prices it as dilution already suffered, and founders find themselves arguing to shrink a pool they once argued to create — while employees holding grants from an oversized, slow-moving pool quietly do their own maths on what their options can ever be worth. Pools can be topped up; scheme terms not yet exercised can even be varied by special resolution under Rule 12(5), provided the change does not prejudice option holders. But "we can fix it later" is a poor substitute for sizing it properly once, from a hiring plan, at the start.

So: no statute will hand you the number, and any advisor who quotes you a percentage without asking about your hiring plan is guessing with your equity. If you want a second pair of eyes on the sizing — and on the decisions that must be locked before drafting — our ESOP services page sets out what we settle with founders before a scheme is drafted. Bring the hiring plan. We will build the pool from it.