Small Business Contracts: The Basics

A contract is legally binding when there is an offer, an acceptance of that offer, and something of value exchanged by both sides (called "consideration") — plus both parties have the legal capacity to agree and the deal is for a legal purpose. Most everyday business agreements, even a spoken "yes, I'll do it for that price," can meet this test. But a handful of important deals — buying real estate, agreements that can't be finished within a year, and larger sales of goods — legally have to be in writing to be enforceable at all. Understanding this line, and getting in the habit of writing things down anyway, is one of the cheapest forms of protection a small business owner has.

What actually makes a contract binding

Contract law is mostly state law — built from centuries of court decisions (common law) plus, for the sale of physical goods, a model statute called the Uniform Commercial Code (UCC) that most states have adopted in some version (Louisiana, a civil-law state, never adopted the UCC's sales article, so its rules for sales of goods work differently). The details differ from state to state, but the core building blocks are the same in most places:

• Offer. One person proposes specific terms — what will be done, delivered, or paid, and by when.
• Acceptance. The other person agrees to those same terms. If they change something ("I'll do it, but only for a higher price"), that's usually a counteroffer, not an acceptance, and the ball is back in the first person's court.
• Consideration. Each side has to give up something of value — money, work, goods, or a promise to do (or not do) something. A one-sided promise with nothing given in return ("I'll paint your fence someday") generally isn't an enforceable contract.
• Capacity. Both parties have to be legally able to agree — of legal age and of sound mind. A contract signed by a minor or by someone who lacked the mental capacity to understand it can be void or voidable.
• Legal purpose. Courts will not enforce an agreement to do something illegal, no matter how clearly it was written down.

When all of these are present, you have a contract — whether it's on paper, in an email exchange, or spoken out loud on a job site.

When a handshake deal is enforceable

Oral contracts are generally valid and enforceable in the United States. If you agree by phone to have a supplier deliver materials next week for an agreed price, that's a real contract — the challenge is not whether it counts, but proving what was actually agreed to if the other side later disagrees or simply forgets. That proof problem is the real risk of a handshake deal, not its legal validity.

When writing is legally required: the statute of frauds

Most states have some version of an old rule called the statute of frauds, which says that certain categories of contracts are not enforceable at all unless there is a signed writing. The categories that come up most often for small business owners include:

• Sales or transfers of an interest in real estate — buying, selling, or leasing property (commercial leases for more than a year are commonly covered too).
• Agreements that cannot possibly be completed within one year from the date they're made — for example, a two-year service or supply agreement.
• Sales of goods above a certain dollar amount under the UCC — the traditional uniform rule sets a fairly modest dollar threshold, so it doesn't take a large order to trigger the writing requirement. Because the exact figure and its exceptions are set by each state's own version of the UCC, confirm your state's cutoff rather than assuming.
• A promise to pay someone else's debt (a guaranty or "suretyship" promise), and, in most states, contracts made in consideration of marriage.

If a deal falls into one of these buckets and there's no signed writing, a court generally won't enforce it — even if everyone agrees the deal was made. The exact list of covered categories, the dollar threshold for goods sales, and the exceptions to each of these rules vary by state, so if you're unsure whether your deal needs to be written, that's a good question for a local business attorney rather than a guess.

Why "get it in writing" is good practice even when it isn't required

Outside the statute of frauds, writing is a choice, not a legal requirement — but it's almost always the smarter one. A written agreement:

• Creates a record of exactly what was promised, so a dispute six months later comes down to reading the document instead of two people's competing memories.
• Forces both sides to actually think through price, timing, and what happens if something goes wrong — problems are often easier to catch on paper than mid-project.
• Is far easier to enforce. Even where an oral deal is legally valid, proving its terms in a dispute or in small-claims court is much harder without something in writing — texts, emails, and invoices can help, but a signed agreement is stronger.
• Signals professionalism to customers, vendors, and lenders, and is often required anyway by insurers, landlords, or banks before they'll do business with you.

Key clauses to expect in a business contract

Contracts vary enormously by deal type, but most well-drafted business agreements address the same handful of questions:

• Scope of work or goods. Exactly what is being delivered, built, or performed — vague scope is one of the most common sources of business disputes.
• Price and payment terms. The amount, when it's due, and what happens if payment is late.
• Timeline. Start dates, deadlines, and milestones.
• Termination. How either side can end the agreement early, and on what notice.
• Liability and indemnification. Who bears the risk if something goes wrong, and any limits on damages.
• Confidentiality. Whether either side must keep the other's information private.
• Dispute resolution. Where a disagreement gets resolved — in court, or through arbitration or mediation — and which state's law applies.
• Signatures and dates. A contract isn't done until both sides have signed and dated it (electronic signatures are legally valid almost everywhere for ordinary business contracts, under the federal E-SIGN Act and the state electronic-transactions laws that go with it).

A short agreement covering these points, even a page or two, beats no agreement at all. For anything with real money or risk on the line — a lease, a partnership, a significant vendor or client contract — have a lawyer licensed in your state review or draft it. What looks like a "standard" clause can shift real risk onto you, and contract law's fine points genuinely differ by state.

What to do

1. Put the deal in writing whenever you can — even a short email summarizing "here's what we agreed to, please confirm" creates a useful record.
2. Check whether your deal legally requires a writing. If it involves real estate, will take more than a year, or is a larger sale of goods, don't rely on a verbal agreement — confirm your state's exact rule with a local attorney.
3. Read before you sign. Don't sign a contract you haven't read in full, including anything referenced by attachment or "incorporated by reference."
4. Keep copies. Save signed agreements, amendments, and related emails together in one place for the life of the relationship (and afterward, for as long as a claim could reasonably be brought).
5. Get help for anything significant. A one-time consultation with a business attorney to review a lease, franchise agreement, partnership agreement, or large client contract is usually inexpensive compared to the cost of a bad one. The U.S. Small Business Administration (sba.gov), your state or local Small Business Development Center, or a SCORE chapter can also point you toward free or low-cost help.

A few things this basics guide doesn't cover

Contracts touch nearly every part of running a business. A few related situations are covered elsewhere on this site rather than here: agreements with employees and the employer's legal duties toward them, what happens to your contracts and personal guarantees if the business can't pay its debts, and protecting your business name, inventions, or creative work. If a contract dispute turns into a business debt you can't pay, a qualified attorney can walk you through your options.

This article is general information, not legal, tax, or financial advice, and reading it does not create an attorney-client relationship.