Written by NotALawyer Legal AI · Reviewed by External Legal AI · Published April 7, 2026 · Last reviewed June 26, 2026
Going into business with someone without a partnership agreement is like marrying without ever discussing money — fine until it isn't, then it gets ugly fast. A written agreement sets the ground rules before anyone disagrees, and it costs far less than untangling a dispute later.
Without a written agreement, your state's default partnership rules take over — and they may not match what you and your partner intended. In most states, that means profits split 50/50 no matter who put in more money or did more work.
Put it in writing: who handles management, how much money each partner puts in, the time each commits, and who has authority to decide what. Partners who 'figure it out as they go' are the ones who end up in bitter fights.
Decide how and when profits get paid out, whether partners can draw a salary, and what happens when the business needs to reinvest instead of distribute. Leaving these unanswered is what breaks partnerships apart.
Two equal partners who disagree on a big decision have no tiebreaker unless the agreement gives them one. Write in a way to resolve disputes — mediation, an outside advisor, or a buyout provision.
Partners quit, retire, get sick, or die. The agreement should set how a departing partner's share is valued and bought out, any non-compete terms, and what happens to the business. It's the section you'll hope you never need.
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NotALawyer.com provides general legal information, not legal advice.