How Much Does Custom Software Development Actually Cost in 2026?

Here's the direct answer, before the explanation: a focused marketing site typically runs four to six weeks and is the least expensive of these project shapes; a mobile MVP usually lands in the tens of thousands depending on feature count and integrations; a SaaS MVP or a custom CRM build spans roughly eight to fourteen weeks; and a full enterprise platform or ERP migration is priced in phases across months, not as a single number. The gap between the cheapest and most expensive of these shapes is roughly five to ten times, and it's driven almost entirely by three factors — not by which vendor you pick.

'It depends' is a true answer to 'how much does custom software cost,' but it's an unhelpful one on its own. What it actually depends on is knowable in advance, and this is a breakdown of exactly what, using the project shapes and timelines we scope against every day.

Cost by real project shape

These are the shapes most custom software requests actually fall into, with the timelines we scope to in practice:

The three factors that actually move the number

Almost every cost overrun we've seen on a custom software project — ours or one we've inherited — traces back to one of three factors, not to the base build itself:

• Integration complexity — the number, age, and protocol of systems you need to connect. Tidewell Underwriting's claims automation had to bridge two decades-old systems that only spoke SOAP with three newer REST APIs; that's a materially different scope than connecting to a single modern API.
• Compliance requirements — HIPAA, SOC 2, or industry-specific audit needs change the data model, logging, and third-party vendor list, and cost far less when scoped from day one than when retrofitted after a finding.
• Data migration volume and quality — moving from a legacy system means schema mapping and validation before a single feature ships; a messy, undocumented legacy data set costs more to migrate than to build against fresh.

The fully-loaded cost of the alternative

The comparison that actually matters isn't 'agency vs. cheaper agency' — it's a scoped engagement against the fully-loaded cost of doing it another way. A single in-house senior engineering hire costs salary, benefits, recruiting time, and management overhead before they write a line of product code, plus a genuine ramp-up period, and still doesn't cover design, product management, or QA on its own — those are usually separate hires or a gap the engineer absorbs.

An offshore-only team often looks meaningfully cheaper on an hourly basis, and for well-specified, low-ambiguity work it can be a good option. Where it tends to cost more than it appears is oversight and rework — requirements that cross a time zone gap and a language gap without someone with local context and product ownership catching drift early, which shows up later as a feature built to the letter of a spec that didn't match the actual intent.

How we scope a firm number during discovery

Every service page on this site says some version of the same thing, because it's how we actually work: we give a firm number after discovery, not a range that grows later. Discovery maps your real workflow, surfaces which of the three cost-driving factors above actually apply to your project, and identifies the smallest version of the build that solves the real problem — rather than a maximal scope priced to hedge against uncertainty we could have resolved by asking.

If you want a concrete number instead of a range, talk to us about what you're building — we'll tell you which of these project shapes you're actually in before quoting anything.