The verdict in three sentences
A custom web application in New York in 2026 costs between 15,000 EUR (single-function MVP) and 100,000 EUR and up (complex line-of-business platform). Price depends 80 % on the functional scope and integration complexity, not on the number of screens. Always budget 15 to 20 % of the build per year for maintenance to keep the application alive after go-live.
2026 price ranges by complexity level
Custom software is not sold off a catalogue: every project is estimated in person-days. In New York, the average day rate for a qualified team ranges from 500 to 750 EUR depending on seniority and stack. Here are the 2026 orders of magnitude by project type.
| Application type | Scope | 2026 range (EUR) | Timeline |
|---|---|---|---|
| Simple MVP | 1 process, 3-5 screens, basic auth | 15,000 - 35,000 | 6-10 weeks |
| Full line-of-business app | Back-office, roles, reporting | 40,000 - 90,000 | 3-5 months |
| Complex platform | Multi-actor, real time, payments | 100,000 - 200,000+ | 5-9 months |
| Rebuild of an existing tool | Data migration + new stack | 30,000 - 70,000 | 3-4 months |
These amounts are a 2026 order of magnitude: a firm quote requires a scoped requirements document. A 20,000 EUR MVP can reach 45,000 EUR once you add an ERP integration or a billing module.
The budget breakdown task by task
Understanding where the money goes helps you negotiate and prioritise. On a typical project, the split is stable regardless of the total.
| Task | Share of budget | Role |
|---|---|---|
| Discovery & design | 10-15 % | Workshops, user stories, architecture |
| UX / UI design | 15-20 % | Wireframes, mockups, design system |
| Back + front development | 45-55 % | The core: API, database, interfaces |
| Testing & QA | 10-15 % | QA, fixes, automated tests |
| Deployment & docs | 5-10 % | Go-live, documentation |
On a 60,000 EUR budget, that is roughly 33,000 EUR of pure development, 10,500 EUR of UX/UI and 7,500 EUR of QA. Cutting QA is the most common false economy: production bugs cost 3 to 5 times more to fix.
Mini case study
Anthony, operations director of a logistics SME in New York (55 staff), wants to replace route tracking managed in Excel and email. Scope: driver input on mobile, real-time dashboard, accounting export. The agency quotes a line-of-business application at 62,000 EUR over 4 months, plus 11,000 EUR/year maintenance (18 % of the build).
Return calculation: his 4 dispatchers each spent 2 h/day consolidating files, i.e. 8 h/day × 220 days = 1,760 h/year. By automating 70 %, he recovers ~1,230 h/year, valued at 28 EUR/h loaded ≈ 34,400 EUR/year. The build pays for itself in a little under two years, with maintenance covered from year one.
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FAQ
Why does a custom quote vary so much between agencies?
Because the day rate (500 to 750 EUR in New York) and the day estimate differ. A 20 % gap on the rate and 15 days of estimate easily create a 15,000 EUR difference. Always compare the number of person-days, not just the total.
Is a 15,000 EUR MVP a real product?
Yes, if it focuses on a single high-value function. An MVP validates usage with real users before investing in secondary modules. It is the best way to avoid spending 60,000 EUR on unused features.
Do you really have to pay maintenance every year?
Yes: maintenance (15-20 % of the build) covers fixes, security upgrades and small evolutions. Without it, an application drifts within 12-18 months and becomes vulnerable. On a 60,000 EUR build, budget 9,000 to 12,000 EUR/year.
Can no-code cut the cost?
Sometimes, for a low-stakes internal MVP, no-code saves 30-50 %. But as soon as you have fine business rules, volume or integrations, custom development regains the edge on total cost of ownership over 3 years.
What is a realistic timeline for a full line-of-business app?
Expect 3 to 5 months for a 40,000 to 90,000 EUR scope, discovery included. Trying to deliver in 6 weeks forces you to sacrifice QA or design, which you pay for later in technical debt.
Let's scope your project. Describe the process you want to digitise, your indicative budget (15k, 40k or 90k EUR) and your deadline: we prioritise scoping the MVP. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
