What a Software Requirements Document Should Contain Before You Hire a Developer

A software requirements document should describe the business problem, the users and their roles, the workflows step by step, the business rules and exceptions, the systems it must connect to, the data it will hold, and how you will judge that it works. Ten to twenty clear pages are enough for most business systems, and they make quotes comparable and projects predictable.

You do not need to be technical to write one. You need to know how your business works, which is exactly what developers do not know.

1. Purpose and goals

One page. What problem are you solving, and how will you know it is solved? Use measurable outcomes: quotation time down from two days to two hours; no orders typed twice; month-end report ready on the first working day.

2. Users and roles

List every type of user and what they need to do:

| Role | Main tasks | Sees | Can approve | | --- | --- | --- | --- | | Sales executive | Create quotes and orders | Own customers | Discounts up to 5 percent | | Sales manager | Review pipeline | Team's customers | Discounts up to 15 percent | | Accounts | Invoice, record payments | All financial data | Credit limits |

Roles and permissions drive a large share of development effort, so be specific.

3. Workflows

Describe each workflow as numbered steps, from trigger to outcome. For example: enquiry received, quote prepared, quote approved, quote sent, order confirmed, order passed to production.

For each step, note who does it, what information they need, and what happens next.

4. Business rules and exceptions

This is where projects succeed or fail. Write down:

• Calculation rules, such as pricing, taxes, commissions.
• Approval limits and who can override them.
• What happens when someone is on leave.
• What happens when a customer changes an order after confirmation.
• Cancellations, returns, partial deliveries.

The exceptions you forget to mention become change requests later.

5. Integrations

List every system the software must talk to, what data moves, in which direction, and how often: Tally, CRM, payment gateway, WhatsApp, email, existing databases. Note whether each system has an API or only exports files.

6. Data

• What records the system will hold, such as customers, products, orders and documents.
• What existing data must be migrated, and where it lives now.
• How long data must be retained, and any privacy requirements under the Digital Personal Data Protection Act.

7. Reports and dashboards

List the reports people need, who needs them and how often. Attach examples of the spreadsheets you use today; they are often the best specification.

8. Non-functional requirements

• Expected number of users and records.
• Mobile or desktop use, and whether offline access is needed.
• Security expectations, such as two-factor login.
• Availability, such as business hours or around the clock.

9. Acceptance criteria

For each workflow, describe how you will test that it works: "A sales executive can create a quote for a configured product in under five minutes, and it matches the price the current spreadsheet calculates."

10. What is out of scope

Listing what you are not building now prevents misunderstandings and keeps the first phase focused.

A shortcut: paid discovery

If writing this feels daunting, many development partners offer a short discovery phase in which they interview your team and produce the document with you. It usually costs a small fraction of the project and produces a better result than either side working alone.

Frequently asked questions

How long should the document be?

Long enough to answer the questions above clearly. For most business systems, ten to twenty pages plus screenshots of current spreadsheets.

Should we include screen designs?

Rough sketches help. Detailed designs usually come later, from the development partner.

Who should write it?

The person who owns the process, with input from the people who do the work every day.

Will developers still have questions?

Yes, and that is good. A clear document makes the questions better and fewer.

Start with clarity

Turbo Bytes Consulting runs discovery phases that turn your knowledge of the business into a clear specification and a fixed price. See our custom software development services and our guide on how to choose a development company.

Book a 30-minute scoping call and we will tell you what your specification needs to cover.