- A good brief describes the problem, the users and the main flows; it does not need technical specifications.
- Listing what is out of scope is as important as listing features, because it stops quotes from guessing.
- Integrations, data migration and admin needs are the items most often missing from briefs, and the most expensive to add later.
- Rank features as must-have, should-have and later, so developers can quote a sensible first phase.
- Send the same brief to every company you ask, so the quotes can be compared fairly.
What should a software requirements brief include so developers can quote it?
A quotable brief explains the business goal, who the users are and what each role can do, the main flows step by step, the data involved, the systems it must connect to, the constraints such as deadline and budget range, and, just as importantly, what is out of scope. You do not need technical specifications. Developers can estimate from a clear description of the problem and the flows; what they cannot estimate is guesswork. Every gap in a brief becomes an assumption, and different assumptions are why quotes for the same project vary so widely.
We read many briefs in our custom software work. This is the structure that produces the most accurate quotes.
1. What problem are you solving?
Start with two or three sentences on the business problem and the result you want. For example: "Our team re-types orders from email into three systems. We want customers to place orders in a portal that updates our stock and accounting automatically." This helps developers suggest simpler solutions you may not have considered.
2. Who uses it, and what can each role do?
List every type of user and their permissions:
| Role | Can do | Cannot do |
|---|---|---|
| Customer | Place orders, see invoices, download documents | See other customers' data |
| Staff | Manage orders, update stock | Change prices |
| Manager | Everything staff can, plus pricing and reports | Change system settings |
| Administrator | Users, roles and settings | (none) |
3. What are the main flows, step by step?
Describe the five to ten most important journeys from start to finish, in plain language: "A customer logs in, searches products, adds items, chooses delivery, pays by card and receives an email confirmation." Mention what happens when things go wrong, such as a failed payment or an out-of-stock item. Flows are the single most useful part of a brief for estimating.
4. What data is involved?
- The main things the system stores: customers, products, orders, appointments, documents.
- Roughly how many of each, now and in a year.
- Existing data that must be migrated, where it lives today and how clean it is.
- Any sensitive data, such as health or payment information, which affects security and compliance work.
5. Which systems must it connect to?
List every integration: accounting software, CRM, payment provider, email and SMS services, shipping carriers, existing databases or APIs. For each, say what should flow in which direction and how often. Integrations are among the most underestimated parts of any project, so name them even if you are unsure they are possible.
6. What do admins and reports need?
Briefs often describe the customer side in detail and forget the back office: managing users, editing content, exporting data, viewing reports and handling support. Say which reports you need and who reads them. Our guide to client portal features shows the kind of detail that helps.
7. Which features are essential for the first release?
Rank everything as must-have, should-have or later. This lets developers quote a sensible first phase and price the rest separately. If you are building a new product, our guide on how to plan an MVP explains how to cut the first version down to one core flow.
8. What constraints apply?
- Deadline and any fixed dates, such as a launch event or season.
- Budget range, so proposals fit reality.
- Platforms: web, iOS, Android, desktop, tablets in a shop.
- Technology you already use or must keep.
- Languages, accessibility and regions you serve.
- Who will host and maintain it after launch.
9. What is out of scope?
Write a short list of things the project does not include, for example "no mobile app in phase one", "no multi-currency" or "content will be provided by us". This removes the most common source of quote differences and later disputes.
10. What visual references help?
Add sketches, screenshots of tools you like, brand guidelines or an existing design. Even rough drawings of the main screens give developers a far clearer picture of the work. If you need help turning ideas into screens, our UI/UX design team can produce wireframes before development is quoted.
Which mistakes make briefs hard to quote?
- Feature names without flows: "user management" or "reporting" can mean a day of work or two months.
- Copying a big product: "like Airbnb" describes years of work by large teams; describe the part you need instead.
- Hidden integrations: an existing system mentioned late in the project often changes the estimate completely.
- No owner: nobody on your side who can answer questions and make decisions quickly.
- Everything is a must-have: without priorities, every quote prices the largest possible version.
What does a one-page outline look like?
- Problem and goal, in two or three sentences.
- Users and roles, as a short table.
- The main flows, one paragraph each.
- Data and migration notes.
- Integrations, with direction and frequency.
- Must-have, should-have and later lists.
- Constraints: deadline, budget range, platforms, hosting.
- Out of scope.
- Contact person and how decisions will be made.
Fill this in first, then add detail where developers ask questions. Their questions show you exactly which parts of the brief were unclear.
How do you compare the quotes you receive?
- Send the same brief to every company.
- Ask each to list its assumptions, exclusions and the phases it proposes.
- Check what is included after launch: support, hosting, updates and warranty period.
- Prefer fixed prices per phase over one large price for a vague scope.
- Ask who owns the code, accounts and data.
If your project is a scheduling tool, our guide to booking systems lists the rules worth describing in the brief.
For product ideas, our SaaS and MVP development team also runs a short paid discovery phase that turns a rough brief into a detailed scope and a fixed quote.
Frequently asked questions
How long should a software brief be?
Long enough to cover the problem, users, main flows, integrations, data and constraints, usually a few pages. Clarity matters more than length. A short brief with clear flows and a clear out-of-scope list produces better quotes than a long document full of vague feature names.
Do we need wireframes before asking for quotes?
They help but are not required. Rough sketches, screenshots of tools you like or a list of screens give developers a much clearer picture. If you do not have any, many companies offer a paid discovery phase that produces wireframes and a detailed scope before the main quote.
Why are quotes for the same brief so different?
Usually because each company filled the gaps in the brief with different assumptions. One quotes a simple admin area, another a full reporting suite. Ask each company to list its assumptions and exclusions, and update your brief where it was unclear. Then the quotes become comparable.
Should we share our budget in the brief?
Sharing a budget range helps developers propose a realistic scope instead of guessing. A good company will tell you what fits within the range and what should wait for a later phase. Without a range, you may receive proposals that are far above or below what you planned.
Should we sign an NDA before sharing the brief?
If the idea or data is sensitive, it is reasonable to ask for one. Many briefs can also be written without confidential details at the quoting stage, sharing the specifics only with the shortlisted company. Never include real customer data or passwords in a brief.
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