What to Put in a Development Contract

A development contract is not a formality you sign to feel professional. It is the document that decides what gets built, what you pay, whether you own the result, and what happens if things go sideways. Most disputes between founders and developers are not caused by bad people; they are caused by a vague or missing contract that let two reasonable parties believe two different things. This is a plain-language checklist of what a software development contract should contain, written for a founder who is not a lawyer and does not want to become one.

The clauses at a glance

Here are the sections that carry the weight, what each one protects, and the single question it answers. The rest of the article takes them one at a time.

1. Scope of work: the anchor for everything

The scope is the heart of the contract, and the most common failure point. It should describe, in specific terms, what the developer will build: the features, the screens, the platforms, and, just as important, what is explicitly out of scope. Vague scope is expensive scope, because every ambiguity is either an argument later or padding in the price now. The best contracts attach your spec as an appendix and refer to it, so the agreement and the build point at the same document. If you have not written that document yet, our guide on how to write an MVP spec gives you a template a developer can quote from directly.

A strong scope section names the deliverables as a list, states the target platform (web, mobile web, or native), and includes an out-of-scope list so nobody assumes a feature into existence. If it references designs, it says who provides them. If it references content, it says who writes it. Ambiguity in scope is the raw material of every later dispute.

2. Price and payment terms

The contract must state the total price, the currency, the payment schedule, and what triggers each payment. For an MVP with a defined scope, a fixed price tied to milestones is usually the safest structure for a non-technical founder: you know your total up front, and the risk of overruns sits with the team, not with you. If the work is hourly, the contract needs a cap, a reporting rhythm, and the right to pause, or the cost can drift with nothing to stop it. We lay out the trade-offs in detail in fixed price versus hourly MVP development.

Avoid two extremes. Do not pay everything up front, which removes the developer's incentive to finish. Do not agree to a schedule so back-loaded that you have paid 80% before you have seen anything working. A healthy pattern for a fixed-price build is a modest deposit, a series of milestone payments tied to working deliverables, and a final payment on acceptance. To sanity-check whether the total itself is reasonable for what you are asking, run it through the free MVP cost calculator before you sign anything.

3. Timeline and milestones

A date with no milestones behind it is a wish. The contract should break the build into milestones, each with a deliverable you can actually see and test, and each with a target date. Milestones do three jobs at once: they give you checkpoints to catch problems early, they tie payments to progress, and they make "are we on track?" a question with a real answer instead of a feeling. In our experience, weekly or biweekly demos against milestones are the single best predictor of a project that lands on time.

Be realistic about what a timeline means. A tight, well-scoped MVP can move fast when the team is senior, working full time, and you make decisions quickly. When any of those is missing, the honest timeline is longer, and a contract that promises a fixed date regardless of scope or your responsiveness is setting up a fight. Tie the date to defined scope and to your obligations, such as providing content and feedback within an agreed number of days.

4. IP assignment: do you actually own it?

This is the clause founders most often assume and most often lack. Paying for code does not, by default, make you the owner of it when the builder is a contractor. You need an explicit assignment of intellectual property in writing, or the developer keeps the rights even after you pay in full. Because this one deserves its own treatment, we wrote a dedicated guide to IP assignment for founders. The short version: insist on a present-tense assignment of all custom code, designs, and documentation, a backup license for anything that cannot be assigned, coverage of any subcontractors, and delivery of the actual source repository, not just a hosted copy of the app.

5. Change requests: the pressure valve

You will want to change something mid-build. That is normal. What matters is that the contract has a defined way to handle it, so a change is a small, priced decision instead of a source of conflict. A change-request clause says that changes to scope are agreed in writing, with any impact on price and timeline stated before work begins on them. This protects you from "that will cost extra" surprises after the fact, and it protects the developer from being asked to absorb a growing wish list inside a fixed price. Without it, "scope creep" is the quiet killer of both budgets and relationships.

6. Acceptance criteria and warranty

How do you and the developer agree that a milestone is done? Left undefined, "done" becomes a matter of opinion. Acceptance criteria turn it into a test: the deliverable is accepted when it does the specific things the scope said it would, demonstrated on a staging environment you can try yourself. Pair this with a warranty period, commonly 30 days after delivery, during which the developer fixes defects in the delivered work at no extra charge. A warranty is not the same as ongoing maintenance or new features; it covers bugs in what was already agreed and built. Spell out which is which, so you are not surprised by a bill for fixing something that never worked.

7. Termination and handover

Every contract should assume the possibility that the relationship ends before the project does, and make that ending survivable. A good termination clause explains how either side can end the agreement, what notice is required, and, crucially, what you receive when it ends: all work completed and paid for, the source code, and access to the accounts. Handover is the part founders forget until they need it. Owning the code on paper means nothing if you cannot retrieve it, so require delivery of the repository and transfer of hosting, domain, and third-party service accounts into your name. An early ending should leave you with a project another team can pick up, not a locked box.

8. Confidentiality and data handling

If you share your idea, your customer list, or any real data, the contract should bind the developer to keep it confidential and to handle personal data responsibly. For most MVPs a straightforward mutual confidentiality clause is enough. If your product touches health, financial, or other regulated data, say so, and make the developer's data-handling obligations explicit. This is cheap to include and expensive to omit.

A pre-signing checklist

Before you sign, walk this list. If you can answer yes to every line, you are in good shape:

1. Is the exact scope described, with an out-of-scope list, ideally referencing my spec?
2. Is the total price fixed or capped, with payments tied to milestones I can see?
3. Are there dated milestones with real, testable deliverables?
4. Does an IP assignment clause transfer full ownership of the custom code to me?
5. Is there a written process for change requests, with price and time impact stated first?
6. Are acceptance criteria and a defect warranty period defined?
7. Does termination guarantee I receive all paid work, the source code, and account access?
8. Is my idea and data protected by a confidentiality clause?

How this fits into hiring well

A contract is the last checkpoint in choosing a builder, not the first. The clauses above are much easier to get when you have already vetted the team and asked the right questions up front. If you are still at that stage, pair this with our questions to ask before hiring an MVP developer so the contract confirms answers you already trust rather than papering over ones you never got.

At SquadPrime the contract is deliberately boring in the best way: a fixed price from $4,000 depending on scope, full IP assignment so you own 100% of the code on delivery, and a clean handover of the repository. Senior professionals build it, the terms are plain, and there are no surprises hiding in the fine print. A contract should make a good working relationship safe, not complicated.

FAQ

Do I really need a written contract for a small MVP?

Yes. The size of the build does not change the size of the risk. A written contract is what defines scope, sets the price, transfers ownership of the code to you, and gives you recourse if the work stalls. In our experience, the cheapest projects are exactly the ones where founders skip the contract and then have no way to prove what was promised. A short, clear agreement protects both sides.

What is the most important clause for a founder?

Two clauses matter most. The IP assignment clause makes sure you actually own the code you paid for, which is not automatic for contractors. The scope and acceptance clause defines exactly what is being built and how you both agree it is done, which prevents disputes. Payment terms come a close third. Get those three right and most other problems become manageable.

Should I pay fixed price or hourly, and how does the contract reflect that?

For an MVP with a defined scope, a fixed price tied to milestones is usually safer for a non-technical founder because your total is known up front and the risk of overruns sits with the developer. The contract should list the milestones, the payment released at each, and the acceptance test for each. Hourly work needs a cap, weekly reporting, and the right to pause, or costs can drift with no ceiling.

What happens to my code if the project ends early?

That depends entirely on your termination and handover clauses, which is why they matter. A good contract says that on termination you receive all work completed and paid for, the source code repository, and access to any accounts, and that ownership of everything paid for transfers to you. Without those lines, an early ending can leave you with a running app you cannot edit and no legal claim to the code.

This article is general information for founders, not legal advice; contract law differs by country and changes over time, so have a qualified attorney review any real agreement before you sign. Any terms referenced were current as of September 21, 2026. Spotted something outdated or inaccurate? Email talk@squadprime.com and we'll correct it promptly.

Related: IP assignment explained for founders · Fixed price vs hourly MVP development