Quick answer
Before asking for a software quotation, prepare a document covering the business goal, user types and roles, main workflows step by step, key screens or reports, data to store, integrations with existing systems, non-functional needs such as security, performance and devices, constraints such as budget range and deadlines, and what is out of scope. Include examples of current documents and processes.
Key takeaways
- Describe the problem and workflows, not just a feature list.
- Roles, data and integrations drive most estimate differences.
- State constraints and exclusions to avoid false assumptions.
- Prioritize must-haves versus later features.
Who this guide is for
Business owners and managers about to request quotations for custom software, apps, portals or integrations.
State the business goal and success measures
Explain why the software is needed: the problem, who experiences it and what improvement you expect, such as reducing order processing time or giving customers self-service access. Include how you will measure success. Vendors who understand the goal can suggest simpler solutions or warn about risky assumptions, and their estimates will reflect what matters to you.
Describe users and roles
List each type of user, such as customers, sales staff, managers, administrators and partners, with approximate numbers and what each needs to do. Note who can see or change what. Roles and permissions affect design and testing effort significantly, so they belong in the requirements from the start.
Walk through main workflows
Describe key processes step by step, from trigger to outcome, including decisions, approvals and exceptions. For example: a dealer places an order, the system checks credit, a manager approves exceptions, the order goes to the ERP, and the dealer is notified at dispatch. Workflows communicate more than a feature list and reveal hidden complexity.
List data, documents and reports
Describe the information the system must store, such as customers, products, orders and documents, and any existing data to migrate. Attach sample forms, spreadsheets, invoices or reports you use today. List required reports and dashboards with their key numbers. Real examples help vendors understand structure and volume.
Identify integrations
List existing systems the software must connect with, such as accounting software, CRM, payment gateways, email or SMS providers and websites, and what data moves in which direction. Mention versions and hosting where known. Integrations are frequently underestimated, so naming them explicitly improves estimate accuracy.
Specify non-functional needs and constraints
Include devices and browsers, languages, expected users and data volumes, security and compliance needs, availability expectations, hosting preferences, budget range and deadlines. Sharing a budget range is not a weakness; it allows vendors to propose an appropriate scope rather than guessing. State fixed deadlines and their reasons.
Prioritize and define exclusions
Mark features as must-have for the first release, should-have and later. State what is out of scope, such as mobile apps or historical data migration, to prevent vendors assuming different things. Ask vendors to list their assumptions in their quotes. A short discovery phase can refine requirements further if uncertainty remains.
Scope checklist
- Is the business goal and success measure stated?
- Are user roles and permissions described?
- Are main workflows written step by step?
- Are integrations listed with direction of data?
- Are priorities, budget range and exclusions clear?
Frequently asked questions
What should a software requirements document include?
Business goal, users and roles, workflows, data and reports, integrations, non-functional needs, constraints, priorities and exclusions, with real examples attached.
Do I need technical knowledge to write software requirements?
No. Describe your business processes, users, data and goals in plain language. Vendors can translate them into technical specifications.
Should I share my budget with software vendors?
Sharing a range helps vendors propose a realistic scope and approach, and makes quotes easier to compare.
Sources and implementation references
- APPNEURAL software requirements starter
Printable template for preparing the information described in this guide.
Prepared with AI assistance as an engineering decision guide. Examples are illustrative unless explicitly labelled as an internal implementation. No independent expert review or customer outcome is claimed.
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