What a Professional Contract Should Cover Before You Start Any Work
by Eric Hanson, Backend Developer at Clean Systems Consulting
A contract is not bureaucracy. It is the document that prevents the most predictable and painful problems in contracting — the ones that come up in every engagement that does not have one.
Why Contractors Skip Contracts and What It Costs Them
"We trust each other." "It's a small project." "We can figure things out as we go." "They're a friend of a friend."
These are the sentences that precede the most expensive disputes in freelance and contracting. Not because trust is wrong — trust is essential. But trust and clarity are not the same thing. People with the best intentions can completely disagree on what was agreed, and without a contract, that disagreement has no resolution mechanism.
The contract is not about distrust. It is about alignment. Two people who agree on everything can sign a contract in five minutes. The contract just makes the agreement visible and durable.
The Non-Negotiables
Regardless of engagement size, these elements should be in every contract:
Scope of work. In writing. Specific. Not "build the backend" but a description of what the backend includes, what technologies, what integrations, what deliverables mark completion. This is the single most important section because it is the reference point for every dispute that comes after.
Rate and payment terms. What you charge, how you charge it (hourly vs project), when invoices are sent, when payment is due, what happens when payment is late. A late payment clause with a specific fee is not aggressive — it is professional. Most clients accept it without comment and pay on time.
Change request process. When the scope changes — and it will — how is it handled? This section defines what constitutes a new request versus a revision, who authorizes changes, and how they are priced. Without this, scope creep is invisible and uncompensated.
IP ownership. Who owns the code when the engagement is done? The default in most jurisdictions is that the creator owns IP unless a contract says otherwise. Clients usually expect to own the work product — make sure the contract reflects that explicitly, and consider what restrictions apply to code built on top of your existing tools or frameworks.
Termination clauses. What happens if either party wants to end the engagement early? A kill fee — typically 20–50% of the remaining fee for project work — protects you if a client cancels a project halfway through and you have blocked time or turned down other work.
Confidentiality. Basic NDA language that protects the client's proprietary information and protects you from being named in ways you have not agreed to.
The Clauses That Come Up More Than You Expect
Revision limits. For project work especially, defining how many rounds of revisions are included prevents endless feedback cycles from becoming uncompensated work.
Communication requirements. What is the expected response time from each party? What happens if the client goes silent for two weeks mid-project? This is more important than it sounds in remote work.
Liability limitation. Your liability should be capped at the value of the contract. You do not want to be on the hook for consequential damages if a bug causes a client downstream loss.
Templates Are Fine; Reading Them Is Required
You do not need a lawyer for every contract — there are solid freelance contract templates available that cover the essentials. But you do need to read every line of what you sign. Contracts that come from clients often contain clauses that are dramatically unfavorable to the contractor: unlimited revision rights, IP assignments that cover future work, non-compete clauses written so broadly they restrict your career.
Know what you are signing. Every time.
The Conversation About the Contract
Presenting a contract is professional. Most serious clients expect one. If a client reacts badly to the idea of signing a contract for a significant engagement, that is a red flag worth paying attention to.
Send the contract before starting any work. Once work has started, your leverage to negotiate terms largely disappears.
A contract does not protect you from every problem — it just ensures that when a problem comes up, there is a shared document to return to instead of two people remembering the same conversation differently.