How to Write a Software Project Brief That Gets Accurate Proposals
What to include in a software project brief so development teams can estimate accurately, and the common mistakes that lead to vague proposals.
The quality of the proposals you receive is limited by the quality of the brief you send. A vague brief produces estimates built on assumptions, and every team assumes something different. The result is a set of proposals that cannot be compared and a project that starts with misunderstandings.
A good brief does not need to be long or technical. It needs to explain what you are trying to achieve, for whom and within which constraints. The sections below cover what to include, and you can download Waloshi Tech’s free project brief template on this page to fill in as you read.
1. Goals, users and how you will measure success
Start with the business problem, not the solution. “We need an app” tells a team very little. “Customers currently book by phone, we lose bookings outside working hours, and staff spend hours confirming appointments” tells them exactly what the software must change.
Then describe your users: customers, staff, managers, partners or suppliers, and what each group needs to do. Finally, state how you will judge success after launch, such as fewer manual steps, faster order processing or more repeat customers. Clear success measures help teams propose the right solution rather than the biggest one.
If you can describe the problem in measurable terms today, such as how long a task takes or how many orders are handled manually, include that. It gives teams a baseline and makes the value of the project easier to judge.
2. Scope: must, should and could
List the features you have in mind and sort them into three groups. Must-haves are the features without which the first version is not worth launching. Should-haves are important but could follow shortly after launch. Could-haves are good ideas to revisit later.
This simple prioritisation does more for accurate proposals than any amount of extra detail. It allows teams to estimate a focused first phase and a realistic roadmap, and it gives you room to negotiate on scope rather than on quality if an estimate is higher than you expected.
Be specific about must-haves. “Customers can pay online” is a feature; “customers can pay by card or bank transfer, receive a receipt by email and request a refund through support” is something a team can actually estimate.
3. Existing systems, integrations, platforms and languages
List every system the new software must work with: accounting or ERP, CRM, POS, payment gateways, booking tools, spreadsheets or your website. Note whether you know if those systems offer APIs, and who manages them. Integrations are one of the most common sources of surprises in estimates, so mention even the ones you are unsure about.
Specify where the software must run, whether that is the web, iOS, Android or desktop, and which languages it must support. If you need Arabic or another right-to-left language alongside English, say so clearly, because it affects design and development from the very first screen.
4. Content, design references and timeline
Share examples of products, apps or websites you like and explain why, along with a few you dislike. Mention any existing brand guidelines and who will provide content, photography and translations. Teams can then judge how much design work is involved instead of guessing at your taste.
Describe your timeline honestly: when you would like to launch, whether the date is fixed by a real event, and what is driving it. A fixed date with flexible scope is a very different project from a fixed scope with a flexible date, and good teams will plan accordingly.
If you are unsure how much detail a section needs, a short conversation with an experienced team before you send the brief usually clears that up quickly.
5. Budget approach, decision process and constraints
You do not have to share a budget figure. Some businesses prefer to give a range or an upper limit, while others share only their constraints, such as a preference for phased investment. Either approach is fine; what helps most is being clear about which way you lean, so teams can propose options that fit rather than a single all-or-nothing plan.
Explain how the decision will be made: who is involved, which criteria matter most and when you expect to choose. Also list the constraints that are not negotiable, such as data that must stay in a particular hosting environment, security or compliance requirements, accessibility needs or technologies your team already uses.
If several people will sign off on the project, involve them before the brief goes out. Late input from a senior stakeholder is one of the most common reasons proposals have to be reworked.
Common mistakes that lead to poor proposals
The most common mistake is describing the solution in detail while leaving out the problem, which prevents teams from suggesting simpler or better alternatives. Another is listing every possible feature at the same priority, which pushes estimates up and makes them hard to compare.
Other frequent gaps include forgetting the admin side of the system, ignoring integrations and data migration, leaving out the people who will actually use the software, and sending different information to different teams. Each of these leads to proposals that look precise but rest on very different assumptions.
Finally, avoid treating the brief as a contract. It is the start of a conversation, and the best teams will challenge parts of it. That challenge is valuable: it often reveals a simpler first phase or a risk you had not considered.
Next steps
Keep your brief to a few clear pages, share the same version with every team, and invite questions before proposals are due. The questions you receive are themselves a useful signal of which teams have understood your business, and which are simply waiting to send a quote.
To make the process easier, download our free project brief template on this page; it follows the structure of this guide section by section. When it is ready, Waloshi Tech will gladly review it with you and turn it into a clear, comparable proposal.
Frequently asked questions
What should a software project brief include?
At minimum: your business goals, the users and what each needs to do, a prioritised feature list, existing systems and integrations, platforms and languages, design references, timeline, your budget approach, the decision process and any constraints. Adding clear success measures helps teams propose the right solution rather than the biggest one.
How long should a project brief be?
A few clear pages is usually enough. The goal is to explain the problem, priorities and constraints well enough that every team estimates the same project, not to write a full technical specification. Detailed requirements are normally developed together with your chosen partner during discovery.
Do I need to share my budget with software developers?
No, it is optional. Sharing a range, an upper limit or simply your constraints helps teams propose options that fit, but keeping it private is perfectly acceptable. What matters most is that every team receives the same information so proposals can be compared fairly.
Why are software development quotes so different from each other?
Different quotes usually reflect different assumptions about scope, integrations, design depth, testing and support. A clear brief with must, should and could priorities reduces those assumptions. Ask each team to list what is included and excluded so you can compare like with like.
What is the difference between a project brief and a requirements specification?
A brief explains the business problem, goals, priorities and constraints so that teams can propose an approach and an estimate. A requirements specification goes much deeper, defining detailed behaviour and rules, and is usually produced during a discovery phase with your chosen partner.
