"It depends" is the honest answer to what custom software costs — and also not a very useful one if you're trying to budget a project. Here's what 2026 industry data actually shows, broken down by the kind of build you're planning.
Cost by project type
- MVP or proof of concept: roughly $25,000–$75,000, typically 2–4 months. Enough to validate an idea with real users before committing to a bigger build.
- Mid-complexity application: $75,000–$250,000. Custom features, third-party integrations, and a polished UI push costs into this range — most real business web apps land here.
- Enterprise platform: $250,000 and up, sometimes exceeding $1M. Complex business logic, compliance requirements, and high-availability infrastructure are what get you here.
For context, one widely cited 2026 industry benchmark puts the average verified software project at roughly $132,000 over about 13 months — a useful reality check against "quick app for a few thousand dollars" expectations (SaM Solutions, Utsubo).
What actually moves the number
Project complexity is the biggest lever, but a few specifics do most of the work within that:
- Integrations — every third-party API (payments, CRM, auth providers) adds scoping, testing, and edge cases.
- Security and compliance — anything touching payment data, health data, or enterprise procurement adds real engineering time, not just a checkbox.
- Design depth — a functional UI and a genuinely polished one are different budgets. Decide which one your launch actually needs.
- Infrastructure — a single-server MVP and a highly-available, auto-scaling platform are not priced the same, for good reason.
The rate you're actually paying for
A meaningful chunk of the price difference between agencies isn't scope — it's geography. Senior developer rates in North America commonly run $150–$250/hour, while equally experienced engineers working remotely often bill $60–$120/hour. On a project measured in hundreds of hours, that gap compounds fast.
That's not an argument for the cheapest option available — it's a reason to ask why a quote is priced the way it is before you sign anything.
Getting a real number for your project
Ranges are useful for planning; they're not a quote. If you're scoping a MERN stack build and want an actual estimate instead of a guess, get in touch — we'll tell you what your specific project looks like, not a generic bracket.
Sources: SaM Solutions — Web App Development Cost in 2026, Utsubo — Custom Web App Cost Guide 2026