Many investors prefer teams over solo founders, because building a company is too much work for one person. But co-founder disputes are one of the most common reasons early startups fall apart. Choose carefully, and write everything down.
What to look for in a co-founder
- Complementary skills. Builder + seller is a classic pair. Zepto paired a CEO with a CTO.
- Shared values and ambition. Do you both want to build a large company, or a profitable small one?
- Commitment. Full-time, now.
- Trust under stress. Have you worked through a hard project together? Many successful teams were colleagues or classmates first. Groww’s four founders all worked at Flipkart.
Where to find one
Your workplace and college network, startup events and hackathons, incubators and accelerators, online founder communities, and people who keep showing up to help with your project.
Splitting equity
There is no perfect formula. Discuss openly:
- Who had the idea and did the early work? (Usually worth less than founders think.)
- Who brings critical skills, capital or relationships?
- Who is full-time, and who is taking the bigger risk?
- What will each person do over the next four years? That matters most.
Equal splits are common and fine when contributions are similar. Large imbalances can demotivate. Use the Equity Split Calculator to structure the conversation.
Vesting protects everyone
Standard practice: 4-year vesting with a 1-year cliff. If a founder leaves in month 8, they keep nothing. After year one, 25% vests, then the rest vests monthly. Investors usually insist on founder vesting.
The founders’ agreement
Put in writing:
- Roles and responsibilities
- Equity, vesting and what happens if someone leaves (good leaver / bad leaver)
- IP assignment to the company
- Decision-making and deadlock resolution
- Salaries and time commitment
- Non-compete and confidentiality (within legal limits)
Have a lawyer draft or review it. It costs far less than a dispute.
Your takeaway
Choose co-founders like a long marriage, split equity with an open conversation, and protect the company with vesting and a written agreement. Next: your first hires and how to build departments.