Your Cofounder Is Your Best Friend. Put It in Writing.

Friendship is a wonderful foundation for starting a business. It is a remarkably poor substitute for deciding who owns what, who decides what, and what happens when things go wrong.

Hence, the Statute of Frauds is a legal rule requiring certain types of contracts to be in writing and signed by the parties to be enforceable, aimed at preventing fraud and “he said, she said” disputes. And why do we have that? The main goal is to reduce fraud, perjury, and disputes by ensuring there is a clear, verifiable record of the agreement. The Statute of Frauds is a long‑standing legal principle, originating in England’s 1677 Act for Prevention of Frauds and Perjuries, that has been adopted in some form in all U.S. states.

The Statute of Frauds applies to specific high‑stakes agreements, mandating that they be memorialized in a written document signed by the party to be charged. It essentially sets a legal template for a best practice of “getting it in writing” to avoid subsequent squabbles.

Starting a company with your best friend sounds like a terrific idea.

You trust each other. You share a vision. You have complementary talents, or at least complementary opinions about who has the better talents. You’ve spent countless hours discussing the opportunity, the product, the customers, and how successful the business could become.

You’re both enthusiastic. You’re both committed. You agree on practically everything.

What could possibly go wrong?

Quite a lot, actually.

I’ve spent decades working with businesses, entrepreneurs, executives, and founders, including serving as general counsel for startups and established companies. One lesson has become painfully clear: Good relationships don’t eliminate the need for clear agreements. They make clear agreements even more important.

Because when a business relationship goes bad, the financial consequences can be substantial.

When that relationship involves your best friend, the personal consequences can be worse.

And when both happen simultaneously, congratulations. You’ve managed to turn a promising business opportunity into an expensive legal dispute with Thanksgiving dinner as collateral damage.

There’s a better way.

Put it in writing before there’s anything worth fighting over.

Friendship Is Not a Governance Structure

Most cofounders begin with remarkably good intentions.

One has the product idea. The other understands technology. One brings industry relationships. The other knows how to build the business.

They agree to work hard, share responsibility, and divide the rewards.

Often, the conversation ends with something like this:

“We’ll be equal partners. We’ll figure out the details as we go.”

That sentence has probably generated more legal fees than a modest-sized law firm could comfortably admit.

Because equal partners can mean very different things to different people.

Does it mean equal ownership? Equal voting rights? Equal salaries? Equal responsibilities? Equal authority to sign contracts? Equal contributions of money and time?

And what happens when one founder works sixty hours a week while the other works twenty?

What happens when one wants to reinvest profits and the other needs income?

What happens when one wants to sell the company and the other wants to run it for another twenty years?

These aren’t unusual situations.

They’re entirely predictable.

The time to resolve predictable disagreements is before they become actual disagreements.

That’s not cynicism.

That’s management.

Fifty-Fifty Sounds Fair Until Nobody Can Decide Anything

Let’s imagine two friends, Susan and Robert, starting a technology company.

Susan develops the product. Robert handles business development, customer relationships, and operations.

They decide on 50/50 ownership.

Simple. Fair. Democratic.

Until Susan wants to spend $150,000 developing a new product feature and Robert wants to use the money to hire two salespeople.

Both have reasonable arguments.

Both believe they’re protecting the company.

Both own half.

Neither can prevail.

The company needs a decision. The founders have created a system that can produce an indefinite tie.

Fifty-fifty ownership isn’t inherently a problem. Fifty-fifty ownership without a deadlock mechanism is.

Dumbass… 50/50 is a recipe for conflict. Sort it out now, while you’re all in agreement.

A well-designed agreement can preserve equal ownership while establishing decision-making authority, reserved matters requiring joint approval, and a practical procedure for resolving disagreements.

Perhaps Susan controls defined product decisions and Robert controls defined commercial decisions. Perhaps major expenditures require both signatures. Perhaps unresolved strategic disagreements go through mediation, followed by a carefully designed buyout procedure.

The particular arrangement matters less than whether it fits the business and is understood by both founders.

What matters is that the founders decide how decisions will be made.

Before they disagree.

Equity Is Cheap Until the Company Is Worth Something

At the beginning, founders can be remarkably generous with ownership.

After all, the company may have no customers, no revenue, and approximately $417 in the bank.

Giving somebody 50% doesn’t feel particularly expensive.

Half of nothing is still nothing.

But equity is not merely a reward for helping start the company. It represents an ongoing economic interest and, depending on the structure, voting rights and influence over the company’s future.

Imagine two founders who split ownership equally on Day One.

Six months later, one founder leaves.

The other spends the next four years developing the product, finding customers, raising capital, hiring employees, and building a successful company.

The departing founder still owns half, assuming nothing in the governing documents provides otherwise.

That’s an expensive way to discover the importance of vesting.

Founder vesting is one of the most important subjects to discuss before issuing equity.

A thoughtfully designed vesting arrangement can tie the founders’ continuing economic interests to their contributions over time. It can address departures, repurchase rights, acceleration events, and the consequences of leaving under different circumstances.

The details depend on the entity, tax treatment, securities structure, and applicable law.

For founders receiving restricted stock, certain tax elections can have extremely short deadlines. An election under Section 83(b), where applicable, generally must be filed within 30 days after the property is transferred.

This is not something to discover on Day 31.

And vesting isn’t about distrusting your cofounder.

It’s about recognizing that people change, circumstances change, and four years is a long time to predict anybody’s professional future.

Including your own.

Who Actually Owns the Idea?

Here’s another problem that tends to arrive at an inconvenient moment.

One founder wrote the original software before the company existed. Another developed the brand. A third contributed proprietary technology from an earlier project.

Everybody assumes the company owns everything.

But does it?

Forming a company does not automatically transfer every founder’s intellectual property to that company.

Ownership can depend on who created the work, employment arrangements, existing agreements, assignments, and applicable law.

Copyrights, patents, trademarks, trade secrets, software, designs, and other intellectual property may require different treatment.

A founder’s former employer may even have a claim to certain work, depending on the circumstances.

Imagine explaining to a prospective investor that the company’s most valuable technology is still owned personally by a founder who recently departed.

That’s not an especially attractive due-diligence conversation.

Before the company becomes valuable, identify the intellectual property the business needs and make sure ownership and licensing arrangements are properly documented.

The company should know what it owns.

And the founders should know what they’re contributing.

Your Cofounder Is Not Your Employee. Unless They Are.

Titles are another source of unnecessary confusion.

Both founders want to be CEO.

Or one is CEO and the other is President, although nobody has defined what either position actually means.

Who hires employees?

Who approves expenditures?

Who negotiates contracts?

Who can borrow money?

Who can commit the company to a five-year lease?

Who decides compensation?

Who can terminate an employee?

And who evaluates the performance of a founder who also works for the company?

Ownership, management authority, board authority, and employment responsibilities are different concepts. They may overlap, but they shouldn’t be confused.

An ownership percentage is not a job description.

I favor a written authority matrix, even for a two-person startup.

It doesn’t need to resemble the governance manual of a multinational corporation. A few pages may be sufficient to establish operational responsibilities, spending limits, approval requirements, and decisions reserved for the founders or governing body.

The objective is not bureaucracy.

It’s clarity.

And clarity has the attractive characteristic of reducing the number of arguments people need to have.

Money Has an Extraordinary Talent for Changing Conversations

When founders have no money, they tend to agree about money.

They’ll live modestly. Reinvest profits. Keep costs low. Build something meaningful.

Then the business starts generating revenue.

One founder wants a salary.

The other wants to reinvest.

One has contributed $75,000 in cash.

The other has contributed two years of unpaid work.

One wants to borrow money.

The other has no intention of personally guaranteeing anything.

Suddenly, the word fair becomes surprisingly difficult to define.

Your agreement should address capital contributions, additional funding obligations, founder compensation, expense reimbursement, distributions, loans, dilution, and what happens when one founder cannot or will not contribute additional capital.

Also, don’t confuse revenue with money available for distribution.

Customers may have paid, but employees, vendors, taxes, and operating expenses still have an irritating tendency to expect payment.

A profitable company can run out of cash. An unprofitable company can temporarily look wealthy. Neither condition is improved by founders arguing over the bank balance.

Put the financial rules in writing.

Then follow them.

The Most Important Clause May Be the One Nobody Wants to Discuss

Every founder agreement should confront an uncomfortable question:

What happens when one of us wants out?

Not if.

When.

One founder may become ill, change careers, relocate, retire, lose interest, become unable to contribute, or simply decide the business isn’t what they expected.

One may die.

One may want to sell.

One may become impossible to work with.

What happens to their ownership?

Can they sell it to anybody?

Does the company have a right to buy it?

How is the interest valued?

How will the purchase price be paid?

Can a founder be removed from management without losing ownership?

What happens if the founders fundamentally disagree about the company’s future?

These questions are much easier to discuss while everybody is optimistic and getting along.

Once a relationship deteriorates, every provision can become a negotiating weapon.

A well-constructed buy-sell arrangement, transfer restrictions, and dispute-resolution process can reduce the likelihood that a disagreement destroys the company.

They cannot eliminate every dispute.

But they can prevent an ordinary business disagreement from becoming an existential crisis.

Don’t Make Your Lawyer Guess What You Agreed To

As a lawyer, I’ve always appreciated clients who bring me clear business decisions.

I can help translate those decisions into enforceable agreements, identify legal risks, and explain the consequences of different structures.

What I cannot reliably do is reconstruct an agreement that never existed.

“We talked about it over dinner.”

Wonderful.

What did you decide?

“We were both on the same page.”

Which page?

“We trusted each other.”

I hope you still do.

The problem is that two intelligent, honest people can remember the same conversation differently.

Especially several years later, when the company has become valuable and their interests have diverged.

A written agreement creates a common reference point.

It also forces founders to confront questions they might otherwise avoid.

The value of a good agreement isn’t merely what happens when people disagree. It’s the disagreements the drafting process helps prevent.

What I’d Want in Writing Before Starting With a Cofounder

You don’t need a hundred-page agreement before making your first sales call. But you do need to address the fundamentals, using documents appropriate to the entity and circumstances.

At a minimum, I’d want the founders to agree on:

1. Ownership and contributions. Who owns what, what each founder contributes, and whether ownership is subject to vesting or repurchase rights.
2. Roles and authority. Who runs which parts of the business, who can make decisions, and which decisions require joint approval.
3. Money. How capital is contributed, compensation is determined, expenses are reimbursed, profits are distributed, and future financing is handled.
4. Intellectual property and confidentiality. What belongs to the company, what remains individually owned, and how sensitive information is protected.
5. Founder departures. What happens if someone leaves, stops contributing, becomes disabled, dies, or wants to sell their interest.
6. Deadlocks and disputes. How disagreements are escalated, resolved, and, if necessary, separated through a workable exit mechanism.
7. Changes to the agreement. How the founders can amend their arrangements as the business grows.

For an LLC, many of these provisions belong in a carefully drafted operating agreement, supported by appropriate assignments, employment or service agreements, and other documents.

For a corporation, the structure may involve organizational documents, bylaws, stock purchase agreements, vesting provisions, shareholder arrangements, board approvals, and intellectual property assignments.

The form matters.

So does the state in which the company is organized.

And the tax consequences can matter enormously.

A template downloaded from the internet may be a useful starting point for understanding the issues. It is not evidence that the resulting agreement fits your company.

Saving a little money on foundational legal work can become remarkably expensive when the business succeeds.

A One-Week Cofounder Reality Check

Before you and your best friend form the company, spend one week testing whether you’re actually ready to build it together.

Monday: Discuss the vision. Where do you want the company to be in three years? Is the objective a profitable small business, a venture-backed growth company, or an eventual sale? Different ambitions can create fundamentally different decisions.

Tuesday: Discuss contributions. How much time, money, intellectual property, and expertise will each founder contribute? What happens if those contributions change?

Wednesday: Discuss control. Who makes operational decisions? Which decisions require both founders? What happens when you disagree?

Thursday: Discuss money. When will founders be paid? Who funds losses? What happens when additional capital is required? What financial risks is each founder willing to accept?

Friday: Discuss the divorce. What happens if one founder wants to leave, stops performing, or wants to sell? How will the company and the relationship survive a serious disagreement?

Then write down the decisions.

Take them to a qualified lawyer and, where appropriate, a tax adviser to turn those decisions into proper agreements.

If you can’t agree on the fundamentals while the company is worth nothing, consider what will happen when it’s worth $10 million.

The objective isn’t to discover whether you like each other. Presumably you’ve already settled that. It’s to discover whether you can make difficult business decisions together.

The Best Agreements Protect the Relationship

Some entrepreneurs resist formal agreements because they believe documentation signals distrust.

I see it differently and clients have paid me as a lawyer to sort the mess out for them when they did not get it in writing.

Trust is valuable.

Friendship is valuable.

Goodwill is valuable.

But none of them tells you who has authority to approve a major expenditure, how ownership changes when somebody leaves, or what happens when two equal owners reach an impasse.

Those are business questions.

And businesses need answers.

A good cofounder agreement isn’t designed around the assumption that your friend will become dishonest, unreasonable, or difficult.

It’s designed around the much more realistic assumption that intelligent, well-intentioned people will eventually disagree about something important.

The best time to agree on how you’ll handle disagreement is while you still agree.

That’s not a failure of friendship.

It’s respect for the friendship.

One Last Thought

Starting a business with someone you know and trust can be one of the most rewarding professional experiences of your life.

You share the risk, the work, the uncertainty, the occasional terrifying bank statement, and hopefully the rewards.

But a startup is not merely a shared adventure.

It’s an economic enterprise with legal obligations, financial consequences, and decisions that can affect employees, customers, investors, and families.

Treat it accordingly.

Have the uncomfortable conversations early. Agree on ownership, responsibilities, authority, money, intellectual property, and exits. Document the arrangements properly.

Then get back to the interesting work of building a company customers actually want to buy from.

Your cofounder may be your best friend. Wonderful. Put it in writing.

Because the objective is to build a successful business together.

And, if possible, still be friends when you do.

Author’s note: This article provides general business and legal education, not legal advice for a particular company or situation. Founder arrangements, ownership, vesting, taxes, and governance should be reviewed with qualified advisers familiar with the applicable law and the company’s circumstances.