I call it the "Nutshell Agreement." A basic contract with your co-founders about your goals & expectations.
Although I'm not big on contracts for startups, I can say with confidence after starting 10 companies that the "Nutshell Agreement" is by far the most important.
What's in the 2-3 page agreement? A high level summary about everything you are setting out to do, along with everyone's expectations.
Goal / Mission
What are you setting out to do and why? The why is critically important because it can keep you going when times get tough. More on that later.
Product / Service
What exactly are you building and for who. This will likely shift over time but paint a picture of what you see in the short & long term.
Business Model
How do you plan to monetize? It's a business after all.
Team
Who is CEO and makes the final calls (there can be only one).
What is each person responsible for?
Effort / Schedule
Is this full time? In person/remote? Everyone on same schedule? Vacations? Sabbaticals? All this stuff is particularly important these days post-covid.
Compensation
Are founders paid? Deferred salary? I like to do deferred with step-ups over time when you hit certain goals.
Equity / Investment
What is the current breakdown? How much do you plan to give out to early team members / equity pool?
Whats the vesting schedule?
Who is investing what? Whats the expectation on early raises?
Board / Legal
Who's on the board?
For LLC's how does voting work? (C-Corps are 1 vote per person).
Financials / Budget
What is the near-term expectation on burn / budget?
Do you plan to shoot for profitability or the traditional VC model?
Culture
What kind of office / team / culture do you want to build?
How do you see the day to day?
What values do you want to have?
Gotchas
How do you handle equity if someone leaves / etc?
What if someone needs a sabbatical?
Try to have some discussions about edge cases even if not perfect.
That's it.
I usually write Nutshell Agreements as a bulleted list to keep it simple.
Once you're done, I sign it and send it off to the lawyers to turn it into the operating agreement / bylaws.
Below is a quick template you can copy to get started:
nutshelldemo.docx
Google Doc