Starting a company with a co-founder often begins with shared excitement and a quick conversation about ownership. However, months later, a disagreement over who owns what may slow decisions and worry investors. Settling the split early may help you avoid those problems.
Weighing role and effort may help you divide ownership fairly
Founders often weigh each person’s role, time commitment and contributions. Some startup advisers recommend an equal or nearly equal split, since building a company may take many years and early differences may matter less over time.
Investors may also read the split as a sign of how much each founder values the team. Whatever split you choose, discussing it openly may help every founder see it as fair.
Earning equity over time may protect the company if a founder leaves
Vesting means you or your co-founder earn full ownership rights over time rather than holding unrestricted shares on day one. A common schedule runs four years with a one-year waiting period, known as a cliff. A founder who leaves before the cliff may keep no shares.
After that, shares may vest monthly, and your company typically maintains the right to repurchase or cancel unvested shares at original cost.
Putting decisions, exits and IP in writing may help prevent disputes
A written agreement may spell out how your company makes decisions, what happens when a founder exits, and who owns the intellectual property (IP) each founder created, which requires a signed written assignment under federal law to belong to your business.
Whether you form an Illinois corporation using a shareholder agreement or an LLC using an operating agreement, you can formally establish rules for management, profit division, voting power, and transfer restrictions.
Without a written agreement, state default rules apply under laws like the Illinois Uniform Partnership Act, which presumes an equal 50/50 profit split and equal voting rights regardless of who contributed more capital or effort.
Talking with an attorney may help you set terms that fit your startup
The right structure may depend on your entity type, your investors and each founder’s plans. An Illinois business attorney may review your situation, explain how a split and vesting terms could affect you, and help put the agreement in writing before problems arise.