How to Write a Software Requirements Brief Developers Can Quote

A good requirements brief explains who uses the system, what they do, what data is involved and what the system must produce. It does not need technical words. With a clear brief, a software company can give a fixed-scope quote, and you can compare quotes fairly. Without one, you receive vague prices that grow. Use this structure.

1. The business background

In a few lines describe what your business does, how many staff and branches you have and what problem prompted the project. For example: we run three branches, record sales in Excel and cannot see stock across branches. Keep to facts and numbers you know.

2. The people who will use it

User	What they do	What they must not see
Owner	Reads reports, approves discounts	Nothing hidden
Branch manager	Checks stock and staff sales	Other branch salaries
Counter staff	Enter sales	Cost prices and reports
Customer or dealer	Places orders, views own history	Anyone else data

This table alone defines roles and permissions, which are among the most important parts of a build.

3. The process, step by step

Describe the main journey from start to end. For a sale: customer asks, quotation is made, owner approves discount, invoice is printed, payment is received in cash or wallet, stock reduces. For each step, say who does it, what information is needed and what happens when something goes wrong, such as a return or a part payment. Draw it on paper if that is easier and photograph it.

4. The data you hold today

• Where is it now: Excel, paper registers, another system?
• Roughly how many records: customers, items, invoices?
• Is it clean enough to import, or does it need tidying first?
• Does it include Nepali text, BS dates or legacy Preeti fonts?

5. The outputs you need

List the reports, printouts and messages the system must produce: the Monday sales summary, the VAT invoice, the dues list, the SMS to customers. Attach a sample of each current document. Real samples remove a large amount of guessing.

6. Rules and exceptions

Write down the special rules that make your business different: discounts above a limit need approval, dealers get a different rate, festival offers expire on a given date, unpaid invoices block new orders. These rules are usually where custom software earns its place, and where unclear briefs cause the most disputes.

7. Integrations and constraints

Mention any outside services you expect: payment gateways, SMS or WhatsApp, accounting export, fingerprint devices. Mention constraints too: slow internet, a fixed launch date, a tax filing deadline or a requirement to run on certain devices. Anything that depends on an outside provider has its own approval and terms, so ask early.

8. Priorities in three buckets

1. Must have in the first release. Without this, the system is useless.
2. Should have soon after. Valuable, but the business can run without it for a while.
3. Nice to have later. Ideas that can wait.

This list becomes the phase plan. Be strict about the first bucket. The smaller it is, the sooner you start using the system and learning what you really need.

Mistakes that make a brief useless

• Listing features instead of jobs. A line like add a dashboard tells a developer little. A line like the owner must see yesterday sales by branch before 9 am tells them everything.
• Skipping exceptions. Returns, part payments, cancelled orders and corrections cause most real-world complexity.
• Using unexplained shorthand. Every business has its own words. Write what each means.
• Hiding the messy parts. If your data is a mess, say so. It affects the plan.
• Writing it alone. Ask the people who do the work to read the brief and correct it.

A sample requirement written well

Poor: the system should manage orders. Better: a dealer can place an order from their login by choosing items from our price list. The order appears for the sales manager, who can approve it, change quantities or reject it with a reason. Approved orders reduce stock and appear on the warehouse pick list. The dealer sees the status of each order. Notice that every sentence names a person, an action and a result. Your brief should read like this, and a developer can price it.

Your next step

Fill in these eight sections, even roughly, and send them to WebsNP on WhatsApp on +977 9846280400. We will turn them into a proper requirements document during discovery. Before you do, check whether a product like inventory management or project management already covers the job. See also the custom software development page.

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