Why software quotes vary so much

You sent the same brief to three software companies and received three very different prices. What explains the gap, and how do you decide which proposal fits your project?

Often, the companies are not pricing quite the same thing. Each makes assumptions about scope, quality, staffing and risk. Differences can also come from reusable software, more efficient delivery or lower overheads. Price alone does not tell you whether a quote is complete or good value.

The same brief can lead to different assumptions

Imagine asking three builders to quote for “a warehouse”. One pictures a basic shed; another includes insulation, loading bays and offices; the third allows for future expansion. The same request has produced three different buildings.

Software works similarly. “An order management system” could mean a tool for one team or a platform connecting suppliers, couriers and finance. Until those boundaries are clear, the totals are difficult to compare. A detailed brief helps, but suppliers still need to make their assumptions explicit.

What actually sits behind the number

Scope: how much of the problem they are solving

“Stock visibility” might mean a dashboard, or it might mean reconciling stock across a shop, warehouse and website in real time. Those require different amounts of work.

A higher quote may account for essential complexity, but it may also include features you do not need. A lower one may cover less, or meet the same needs more economically. Ask which parts support your business goals and which could wait.

Quality and the parts you cannot see

Testing, security and performance work may not appear on screen, but they affect whether the software is dependable in use.

Check what each supplier includes and what they will test against: expected transaction volumes, access permissions and what happens when a connected system fails, for example. You need safeguards appropriate to the project, not an expensive technical specification without a clear purpose.

Who does the work

Compare rates alongside the estimated effort. A lower day rate does not necessarily produce a lower total if the work requires more days.

Relevant experience can help a team anticipate problems, but seniority does not guarantee faster delivery. Reuse, team organisation and overheads also influence cost. Ask who will do the work, whether subcontractors are involved and who is responsible for technical decisions.

Risk and the unknowns

An unfamiliar billing system or inconsistent supplier feed can make effort difficult to predict. A supplier might include a contingency allowance, propose investigation first or identify work that needs a separate estimate.

Also check the pricing basis. A fixed price applies to an agreed scope under the contract’s terms. An estimate is a forecast, not necessarily a commitment to that total. With time-and-materials pricing, charges depend on time worked and agreed rates, plus any other agreed costs.

Ask how uncertainty affects the price, how spending is monitored and when your approval is required. Do not assume that every supplier handles these points alike.

How to compare quotes fairly

Start with what the numbers cover, then compare the totals. Use these seven checks:

1. Deliverables and acceptance criteria. What must the software achieve, what is excluded, and how will you agree that the work is complete?
2. Integrations, data migration and your responsibilities. Which systems and data are included? Who provides access, cleans data, answers questions and signs off decisions?
3. Testing, security and performance. What checks are included, who performs them, and what usage levels or security requirements must the software meet?
4. Price, contingency and changes. Is the figure a fixed price or an estimate? Is billing based on time and materials? What does any contingency cover, and how are changes priced and approved before work proceeds?
5. Milestones and payments. What will be delivered at each stage? When are payments due, and how do they relate to delivery and acceptance?
6. Costs after launch. Identify hosting, licences and support charges. Clarify what counts as a defect against agreed requirements versus a new feature or improvement, and how each is handled and charged.
7. Ownership and handover. What code and other materials will you own or have rights to use? Confirm access to code repositories, documentation and accounts, plus arrangements for moving to another supplier.

Missing detail is a reason to ask questions, not proof of bad intent. Give each supplier the same clarifications so they can respond on a comparable basis. If a quote is much lower or higher than the others, ask the supplier to explain why.

What a fair quote looks like

A useful quote connects the price to a clear scope, explains its assumptions and makes remaining uncertainties visible. It should help you understand both the initial build cost and the likely ongoing costs.

The aim is not automatically to choose the cheapest or most expensive option. It is to choose a proposal that meets your needs, with costs and responsibilities you understand.

Talk it through before you decide

Planning a software project? Talk to Softwareup about your scope, priorities and requirements.