Most co-founder fallouts are not caused by a bad idea or a weak market. They are caused by two or three people who never wrote down what they agreed to when everything felt friendly. A founders' agreement is the private contract that fixes those terms in writing before money, growth, and stress put them under pressure. In India it is enforceable as an ordinary contract under the Indian Contract Act, 1872, and it is one of the cheapest forms of insurance a startup can buy.
What the agreement actually covers
Think of the founders' agreement as the rulebook for how you own, run, and eventually leave the company. Five areas matter most.
1. Equity and roles
The agreement records who owns what percentage and why. Splits are commonly weighted, for example one founder holding a larger stake as CEO, rather than defaulting to an equal division. Record each founder's title, decision rights, and core responsibilities, so that "who owns product" and "who signs contracts" is never a guess. Be careful with a clean 50:50 split between two founders: nobody holds a majority, so any serious disagreement has no built-in way to resolve.
2. Vesting
Vesting means a founder earns shares over time by staying and contributing, instead of owning everything on day one. The widely used structure in Indian startups is four-year vesting with a one-year cliff: nothing vests in the first twelve months, then 25 percent vests at the one-year mark, and the rest vests monthly or quarterly over the next three years. Without vesting, a co-founder who quits after six months walks away with their full stake sitting permanently on your cap table, which future investors will treat as a red flag.
3. Intellectual property
All IP created for the business, including code, designs, and brand work done before the company was incorporated, must be explicitly assigned to the company in writing. If it is not, that IP legally stays with the individual founder who made it. This single clause is often what an investor or acquirer checks first during due diligence.
4. Exit and leaver terms
Decide in advance what happens to a founder's shares when they leave. A common approach distinguishes a "good leaver", for example someone exiting due to illness or mutual agreement, who keeps vested shares at fair value, from a "bad leaver" who breaches the agreement or is terminated for cause and may be required to sell back shares at a nominal or discounted price. Note the India-specific point: a share transfer restriction like a right of first refusal binds the company only when it is also written into the Articles of Association, not just the founders' agreement.
5. Deadlock resolution
Spell out which decisions need unanimous consent and which need a simple majority, and name a tie-breaker, such as a casting vote, a nominated mentor, or referral to mediation or arbitration. This is what stops a single disagreement from freezing the whole company.
Why sign it early
Sign at or before incorporation, while goodwill is high and no one knows who will turn out to matter most. Negotiating equity and exit terms is far easier when the outcome is still uncertain for everyone. If you skip the agreement, departures, transfers, and deadlocks fall back on the default rules of the Companies Act, 2013 and your standard Articles of Association, none of which reflect the specific deal you and your co-founders actually intended.
A practical caution
Keep non-compete restrictions realistic. Section 27 of the Indian Contract Act, 1872 voids agreements that broadly stop a person from practising a lawful profession, so an overbroad non-compete after a founder exits is likely unenforceable. Get the agreement drafted or reviewed by a startup lawyer, keep it consistent with your Articles of Association, and have every founder sign before you write your first serious line of code together.