A well-drafted software development agreement is critical when you’re commissioning bespoke software, whether you’re rolling out a complex CRM system across a growing business or building a platform as the core of a new product offering.
The right software can bring efficiency, innovation, and a competitive edge, but it also carries legal and operational risks. You may face challenges such as unclear timelines, changing requirements, or disputes regarding deliverables and ownership.
Unlike standard IT contracts, a custom build needs a legal agreement that reflects the unique features of your project, from your chosen development methodology to how and when the software will be tested and delivered. And it’s just as important to understand the developer’s position: reviewing the project from the supplier’s angle can help you anticipate risks and align expectations early on. For that, it’s worth considering our insights on software development contracts from the developer’s perspective.
Getting this right from the outset helps avoid costly delays and mismatched assumptions. If you’re unsure how to structure your contract or need support negotiating with your supplier, our commercial law solicitors can help you create a robust agreement that supports your goals and protects your investment.
Contents:
- What makes software development contracts unique?
- Choosing the right development approach for your project
- Essential terms to include in your software development agreement
- Managing risks to keep your project on track
- Negotiating supplier contracts effectively
- Get expert legal support for your software project
What makes software development contracts unique?
Custom software development contracts are critical when you instruct a supplier to develop bespoke software tailored to your specific needs.
Unlike other less tailored IT contracts (such as licences for off-the-shelf software), you’ll need robust software development contracts to address detailed development terms and lay out key niche provisions, such as the deliverables and how the development process will work in practice. These contracts can often involve significant negotiation with developers, especially where the technology is business-critical.
Choosing the right development approach for your project
Software projects are each unique, so contracts don’t follow a one-size-fits-all approach.
The development methodology (whether Waterfall, Agile, or a mix) will shape the agreement and determine what it needs to include.
- Waterfall typically follows a structured, step-by-step process. Each phase usually needs to conclude before the next one begins.
- Agile takes a more flexible approach, where the overall scope and goals are set at the start. Still, the details evolve as the project progresses, meaning there’s more room to adjust priorities during development. Agile can come with more uncertainty and risks, making strong contractual protection all the more important.
Your agreement should clearly outline the development methodology to prevent misunderstandings about what, when, and how your software will be developed.
Some key differences include:
- Waterfall: Requires the supplier to deliver specific features by fixed dates, with binding acceptance criteria.
- Agile: Involves ongoing testing during sprints and relies on collaboration, requiring tailored drafting for the development process.
- Waterfall often employs formal change control processes, whereas Agile allows changes to be made naturally within your product backlog.
- Agile projects may include roles such as a ‘Product Owner’ or ‘Agile Coach’ and methodologies like SCRUM or Kanban.
A mismatch between the methodology and the contract can lead to misunderstandings and disputes. For example, an Agile project with a rigid Waterfall contract can result in significant issues. Ensuring your contract accurately reflects the chosen methodology from the outset is crucial.
Essential terms to include in your software development agreement
Your contract should clearly outline how the project will operate and define specific terms for deliverables, timelines, acceptance, and responsibilities.
Your software development agreement should reflect whether your project will follow a Waterfall, Agile or hybrid model, as each comes with its contractual risks and drafting priorities. Terms will differ based on the methodology, but here are some key considerations:
- Defining clear requirements: Your project’s scope must be clearly defined. A Waterfall contract will typically lay out a fixed set of requirements with agreed features and timelines upfront, leaving little room for change. Agile projects, on the other hand, are more fluid, starting with an initial roadmap or ‘user stories’ and evolving as development progresses. Hybrid approaches may combine elements of both. For Agile, early road mapping can help focus and prioritise features while allowing flexibility as the project unfolds.
- Payment terms: Understanding what you need to pay and when is critical, especially for high-value projects. Your contract should specify whether payments are based on fixed costs or time-and-materials, and if they are tied to the completion of milestones or sprints. Be cautious of scope creep, as projects can easily exceed their original scope, potentially resulting in unexpected costs.
- Setting acceptance criteria: It’s essential to test the software as it’s developed. Your contract should define what will be tested, when, and by whom. Waterfall projects often have predefined criteria agreed upfront, while Agile projects rely on ongoing testing and feedback throughout development. The contract should also outline what happens if the developer fails to meet the criteria, including rights to retesting, refunds, or additional work. Waterfall usually offers clearer remedies, whereas Agile can make it harder to define defects or delays due to its flexible nature.
- Agreeing on dispute resolution: Disputes can arise in any software project. A clear resolution process can help resolve issues quickly. This is particularly important for Agile projects, where less-detailed requirements can lead to ambiguities, and fast-paced development cycles make swift dispute resolution critical.
- Termination rights: Your contract should clearly outline your termination rights, providing a clear exit route for specific events. It must also outline what happens to the software, including the transfer of source code and deliverables, in the event of early termination. Negotiating termination without cause can be challenging in Waterfall projects.
- IP rights: Intellectual property ownership is often a key point of negotiation in custom software development. While you may assume paying for the development gives you automatic ownership, suppliers often prefer to grant you a licence, particularly when their software includes reusable components. If owning the IP is critical to your business operations or competitive advantage, ensure the contract reflects this and covers issues like open-source licences, the developer’s ‘background IP,’ and third-party code.
- Source code access: Source code is vital, especially for bespoke projects. If you’re concerned about the supplier’s ability to provide ongoing support, negotiate a software escrow agreement. This ensures you can access the source code under specific circumstances, such as supplier insolvency.
- Data protection compliance: If your software processes personal data, .ensure the contract includes clauses that comply with data protection laws like UK GDPR. The exact terms will depend on whether you or the supplier acts as a data controller, processor, or both. Failing to address this could leave your business vulnerable to significant penalties.
Managing risks to keep your project on track
Every software project comes with risks. Addressing them in your contract can help protect your business.
Key risk management measures include:
- IP indemnities to compensate your business if the software infringes third-party rights.
- Supplier warranties, such as guaranteeing the software is free from defects.
- Remedies for delays or defects, particularly for Agile projects, where delays can be harder to quantify.
- Cost control measures to manage unexpected charges.
- Reviewing limitation of liability clauses to ensure critical breaches, such as IP or data protection failures, are uncapped.
Carefully crafted clauses reduce risks and help your project succeed.
Negotiating supplier contracts effectively
Typically, a good developer will have its own standard development contracts or terms, which you’re likely to find land in your inbox for signature before you start a project. In many cases, you’ll start off with their terms rather than negotiate your own development contract from scratch.
When reviewing a supplier’s legal terms (particularly those of reputable suppliers with strong bargaining power), you may find that a practical approach is best for balancing the protection of your business from risk and facilitating a successful deal.
Some key strategies you can consider are the following:
- Focus on key clauses: Pay close attention to high-risk areas, such as deliverables, timelines, payments, intellectual property rights, and supplier liability. These provisions are crucial to protecting your business, so avoid getting sidetracked by lower-risk issues.
- Review terms carefully: Take the time to review the supplier’s terms thoroughly, even if you’re in a rush or eager to proceed. Larger or high-value contracts often involve negotiation, so don’t hesitate to push for changes that better suit your needs.
- Plan ahead: Consider potential negotiation roadblocks and explore middle-ground solutions. For instance, if the supplier won’t transfer IP ownership, could an exclusive licence with additional protections work instead? Having fallback options can give you the flexibility to secure an agreement that works for both parties.
Software development agreements are often lengthy and complex, and even small oversights can have serious consequences. If you’re not confident reviewing or negotiating the contract, it’s worth seeking legal advice. Given the significant time and costs involved in these projects, working with an experienced commercial solicitor can ensure your contract is legally robust and tailored to your needs. Our commercial technology solicitors are always here to help.
Get expert legal support for your software project
Whether you’re navigating a fixed-scope Waterfall build or managing evolving Agile requirements, a strong legal framework is essential to make your project a success. From intellectual property rights and dispute resolution to supplier liability and data protection, minor contractual oversights can lead to significant commercial risks.
Our commercial law solicitors can help you draft, review or negotiate your software development agreement – ensuring it's tailored to your needs, aligned with your commercial objectives, and structured to keep your project running smoothly.
