How to Split Equity Between Co-founders: Vesting, Cliff, Founders' Agreement Clauses and the Tax Angle (2026)

More startups die from founder disputes than from competition, and most of those disputes trace back to an equity split done in a coffee shop with no vesting and no agreement. The right time to fix the split is before incorporation, when the shares cost ₹10 each and nobody has a lawyer. This guide gives a method for deciding the numbers, explains vesting and how it is implemented under Indian company law, lists the founders' agreement clauses that actually get used, and covers the tax consequences of getting the timing wrong.

A method for the split

Score each founder on the factors below, weight them, and let the arithmetic propose a starting point. Then adjust for anything the table cannot capture.

Ideas score zero. Execution over the next four years is what the shares pay for, and vesting is what enforces that.

Worked example

Three founders: Aarti (CEO, full-time, ₹10 lakh capital, brought the first three customers), Vikram (CTO, full-time, built the prototype), Neel (domain adviser, part-time for the first year, no capital).

• Scores out of 10 on each factor, weighted: Aarti 8.6, Vikram 7.9, Neel 3.2. Total 19.7.
• Proposed split: Aarti 44%, Vikram 40%, Neel 16%.
• Adjustment: Neel's part-time status is handled by a smaller stake with a two-year cliff instead of one, and an agreement that he moves full-time by month 12 or his unvested shares are bought back.
• Reserve a 10% ESOP pool from day one so that the first hires do not force a renegotiation.

Issue shares at ₹10 face value at incorporation: 4,40,000, 4,00,000 and 1,60,000 shares on a ₹10 lakh capital, with the ESOP pool authorised but unissued. Aarti's ₹10 lakh goes in partly as share capital and partly as a loan or premium, documented in the founders' agreement.

Vesting and cliff: how it works in India

Founders in India are issued shares upfront (not options), so “vesting” is implemented as reverse vesting: all shares are held from day one, but the company (or the other founders) has the right to buy back the unvested shares at face value if the founder leaves. Standard terms:

• Four years, monthly or quarterly vesting after a one-year cliff (nothing vests if a founder leaves within the first year).
• Good leaver (death, disability, removal without cause): keeps vested shares, sometimes accelerated. Bad leaver (resignation, cause): unvested shares bought back at par; vested shares may be subject to a call at fair value.
• Acceleration: single-trigger (on acquisition) or double-trigger (acquisition plus termination) — investors accept double-trigger.
• Mechanics under the Companies Act: buy-back by the company under section 68 is cumbersome, so agreements usually give the other founders or the company's nominee a call option on unvested shares, written into the Articles and the SHA. Transfers are recorded in SH-4 with stamp duty at 0.015% of consideration.

Investors will impose vesting at the first round if the founders have not; having it already, on founder-chosen terms, is the better position.

Founders' agreement: the clauses that get used

1. Equity and vesting as above, with the cap table annexed.
2. Roles, titles and decision rights — who signs what, spending limits, who can hire.
3. Deadlock resolution for 50:50 or split boards: casting vote to the CEO on operational matters, mediation, then a shotgun (buy-sell) clause.
4. Time commitment and outside activities — full-time definition, permitted advisory roles, notice for exit.
5. IP assignment — all pre- and post-formation IP assigned to the company; without this a departing CTO owns the code.
6. Salary and expenses — when founders start drawing, and that salary is separate from equity.
7. Transfer restrictions — right of first refusal to other founders, no pledge of shares.
8. Non-compete and non-solicit for a period after exit (drafted narrowly to be enforceable).
9. Dispute resolution — arbitration seat and language.

The agreement should be executed on stamp paper and its key provisions mirrored in the AOA so that the company itself is bound. The Legal Document Tools on KyaTax produce a founders' agreement draft with these clauses that a lawyer can finalise in an hour instead of drafting from scratch.

Tax on founder shares: timing is everything

• Shares subscribed at incorporation at face value carry no tax — there is no fair value above ₹10 yet.
• Shares issued to a founder after a priced round at less than fair market value are taxable under section 56(2)(x) in the founder's hands (or as salary perquisite if the founder is an employee-director) on the difference.
• Buy-back of unvested shares at par by other founders is a transfer at cost — no gain, but stamp duty and SH-4 apply.
• Later equalisation between founders (one gifting shares to another) is a gift between non-relatives and taxable to the recipient above ₹50,000 in value. Fix the split before the first valuation, not after.
• Founders holding more than 10% (or promoters) cannot receive ESOPs, except in a DPIIT-recognised startup for ten years from incorporation — one more reason to settle equity at the start rather than “top up with options later”.

Common mistakes

1. Equal split by default without a deadlock clause; the first real disagreement has no exit.
2. No vesting between friends. The friend who leaves in month eight with 33% is the most common cap-table problem investors see.
3. Idea premium. Giving 20% extra for the concept to someone who will not execute.
4. Verbal promises to advisers and early helpers — grant advisory equity through a small option pool with a vesting schedule, in writing.
5. Leaving the agreement unsigned because “we trust each other”; trust is exactly why the paper is easy to sign now and impossible later.

Frequently asked questions

What is the standard vesting period for founders in India?

Four years with a one-year cliff, vesting monthly or quarterly thereafter. Because founders hold shares from day one, it is implemented as reverse vesting with a call option on unvested shares at face value if a founder leaves.

Is a 50:50 equity split between two co-founders a bad idea?

Not necessarily, but it must come with a deadlock mechanism — a casting vote on defined matters, mediation and a buy-sell clause — or the first serious disagreement has no resolution path.

Are shares issued to founders taxable?

Shares subscribed at face value at incorporation are not taxable. Shares issued to a founder below fair market value after a priced round are taxable on the difference under section 56(2)(x) or as a salary perquisite.

Can founders receive ESOPs?

Promoters and holders of more than 10% equity generally cannot receive ESOPs, but a DPIIT-recognised startup may grant options to them for ten years from incorporation.

General information for FY 2026-27, not professional advice for your specific case. Rules change — verify against the latest notification or ask a KyaTax expert.
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