In this guide 6 sections
Cost follows scope, the number of user roles, integrations, data migration, reports, and the support you need afterwards. Hosting and licences add running costs. To compare quotes, ask each vendor to price the same scope, state its assumptions and separate build, migration and support.
Scope is the main driver
Software cost follows the amount of work, and the amount of work follows scope. Each workflow, screen, report and rule adds effort to design, build and test, and every one of them must also be reviewed by your own team.
Two firms in the same trade can need very different software. One wants a billing screen. The other wants billing, stock, approvals and a customer portal.
So ask what is in the first release. A narrow first release is cheaper to build and easier to review.
Factors that raise or lower the effort
Some factors matter more than others. These are the ones to ask a vendor about, because each one changes the amount of work.
A feature that sounds small can be large underneath. A simple-sounding approval chain with several exceptions may take longer than a new screen.
- Number of user roles and what each can see
- Integrations with accounts, payment gateways or WhatsApp
- Data migration from sheets or an older system
- Reports, dashboards and printed formats
- Mobile apps, offline use and device support
Costs that sit outside the build
The build is not the only cost. Hosting, licences for third-party services and message charges recur through the year, and support and updates continue for as long as the software is in use.
Training also takes time and money. So does the effort of your own team to test and give feedback.
Ask each vendor to list recurring costs separately. A build price that hides them can look cheaper than it is.
How to compare two quotes fairly
Two quotes are comparable only when they describe the same work, so send every vendor the same requirement pack and ask each one to list its assumptions in writing.
Consider a case where one quote is lower. It may leave out data migration, testing or training. It may also treat changes as extra work from the first week. Read the assumptions before reading the total.
A lower quote with many exclusions can end up costing more than a higher one that is complete.
- Same scope and same list of user roles
- Build, migration, training and support priced separately
- Stated assumptions and exclusions
- How change requests are priced
- Who owns the code and the data
Pricing models and how change is handled
Quotes come in three common shapes. A fixed price suits a clear scope. Time and materials suits work that will change. A dedicated team suits long programmes.
Each model places risk on a different party. Under a fixed price, the vendor carries the effort risk, while you carry the risk of changing your mind, because changes are priced separately. Ask how the vendor handles a change in the middle of a build.
Agree on a review point after the first release. It lets you stop, adjust or continue with real evidence.
Software quote comparison sheet
A grid with one column per vendor and one row per cost item. Rows cover build, migration, training, hosting, licences, support, change requests and ownership terms. Fill each cell from the written quote. Mark any cell the vendor has left blank, and ask about it before deciding.
Open a blank worksheet to printQuestions owners ask
Why do quotes for the same idea differ so much?
Vendors make different assumptions about scope, testing and support. Compare the assumptions before comparing totals.
Is the cheapest quote the safest choice?
Not necessarily. A low quote may leave out work that appears later as extra charges. Check what is excluded.
Do we pay for software after it goes live?
Usually yes. Hosting, support, fixes and updates continue after launch. Ask for these costs in the proposal.
Can a smaller first release lower the cost?
Yes. A narrow first release prices only the flows that matter most. Later releases add more once the first one is in use.