What a UK MVP Actually Costs — and What Drives It Up

Most founders ask the budget question too late — after they've briefed three studios, sat through two "discovery" sales calls, and received quotes that span £30,000 to £180,000 for what sounds like the same product. The range is real. The reason for it is usually scope, not studio greed.

Here's the honest breakdown.

What "MVP" actually means in a B2B context

Before any number makes sense, you need a shared definition. An MVP is the smallest version of a product that can be used by real operators to do real work. Not a prototype. Not a demo. A live thing that processes actual data and earns the right to exist before you invest more.

In B2B, that bar is higher than in consumer software. Your users aren't forgiving early adopters; they're warehouse managers, logistics coordinators, or exhibition ops teams who need the thing to work on Tuesday. That changes what "minimum" means.

A B2B MVP typically needs: one reliable data input path, one output that replaces a current manual step, basic access control so the right people see the right records, and enough audit trail that someone can troubleshoot it without calling the dev team. Everything else — dashboards, bulk import, API integrations with three legacy systems, branded email notifications — is post-MVP.

The honest cost tiers

These are working ranges based on how B2B MVPs actually land. They are not quotes.

£20,000–£45,000: A tightly scoped single-workflow product. Think: a supplier submission portal that replaces an inbox and a spreadsheet. No complex integrations, clean data model, delivered by a small team with modern tooling. AI-assisted development — where the studio uses AI for test coverage, scaffolding and spec-to-code translation — can make this tier more achievable without cutting corners on quality. Expect eight to fourteen weeks from a signed brief to something in users' hands.

£50,000–£90,000: One or two integrations with existing systems (an ERP, a payment gateway, a third-party identity provider), a more complex permission model, or a product that has to handle meaningful data volume from day one. This is where most serious B2B MVPs actually land. It's also where scope creep quietly adds £20,000 by week six if nobody is holding the line.

£100,000–£180,000+: Usually a sign that scope isn't controlled, the stakeholder group is large, or the product is genuinely complex (multi-tenancy, real-time data sync, regulated data handling). Sometimes warranted. Often not. If you're getting quotes in this range for what you think is a simple tool, the discovery phase is probably swallowing the build budget before a line of code is written.

The five things that actually drive cost up

1. Integration depth. Connecting to one clean REST API adds modest cost. Connecting to a legacy ERP with no documentation, a freight carrier's proprietary EDI feed, and a customs system that still runs SOAP — that's a different project. Every integration is a negotiation between two systems that weren't designed to talk to each other, and that takes time.

2. Auth and permissions complexity. A tool with one user type is cheap. A tool where importers see their own records, freight forwarders see a subset, and admins see everything — and where that logic has to be bulletproof — is significantly more expensive. Model this early.

3. Vague acceptance criteria. If your brief says "users should be able to manage their products", that sentence will cost you £15,000 in change requests. If it says "a supplier can add a new product line, attach a PDF spec sheet, and submit it for approval; the buyer receives an email with a link; the buyer can approve or reject with a comment", you've saved at least that. Buildable acceptance criteria are the cheapest optimisation available to any operator commissioning software.

4. Team location and model. A UK-based senior team costs more per day than an offshore team — but the overhead of async coordination, timezone lag, and misaligned context often erodes that saving by month two. The onshore vs offshore trade-off is real and worth reading before you assume cheaper day rates mean a cheaper project.

5. How much you've already decided. Studios charge for uncertainty. If you arrive at a scoping call with a clear user journey, a named data model, and a list of what the MVP will not do, you'll get a tighter quote and lose less to contingency padding. If you arrive with a vision and a mood board, expect the studio to price in their own risk.

Where AI-assisted delivery actually helps

AI tooling changes the economics of some cost categories, not all of them.

It genuinely compresses: boilerplate scaffolding, test generation, documentation, and first-draft data models. A studio using AI-assisted workflows can put a working skeleton in front of you faster, which means you catch misaligned assumptions in week two rather than week eight.

It doesn't compress: integration negotiation, stakeholder alignment, UX decisions, or the cost of building the wrong thing quickly. If the scope is wrong, AI makes you wrong faster.

For operators commissioning an MVP, the practical implication is: AI-assisted studios can be competitive on time-to-first-draft, but the discipline of scoping — what goes in, what stays out, what the acceptance criteria say — is still entirely human and still the biggest cost lever available to you.

Build vs buy: when MVP cost is the wrong question

Sometimes you should not be commissioning an MVP at all. If an off-the-shelf platform covers 80% of your workflow and the 20% gap is a reporting quirk rather than a competitive differentiator, the build-vs-buy answer is buy. A custom MVP that replicates a £300/month SaaS product is rarely a good investment.

The right question is: does your competitive advantage actually live in the software layer? For exhibition organisers managing complex exhibitor-supplier relationships, or importers running multi-leg supply chains with bespoke compliance rules, the answer is often yes — the software is the operation. For others, the spreadsheet isn't the problem; the process is.

Run the honest check before you brief anyone: could you get to the same outcome with a configured SaaS tool and six months of process discipline? If yes, do that first. You'll have much better requirements when you eventually do commission a build.

What a good scoping process looks like

A studio that gives you a cost estimate without first understanding your data model, your integration landscape, and your definition of "done" is either very experienced at your exact problem (rare) or padding for uncertainty (common).

A good scoping process — sometimes called discovery — should deliver a written scope document, named user stories or acceptance criteria, a data model sketch, a list of explicitly excluded features, and a timeline with milestones. If a studio's discovery output is a slide deck with principles on it, that's discovery theatre, not discovery.

That document is what you price against. Without it, quotes are guesses.

Comparison: what moves the needle on MVP cost

Getting to a number you can trust

Commission a scoping engagement before you commission a build. Pay for it. A studio that offers free scoping is recouping the cost somewhere — usually in contingency padding on the build quote or in a contract that makes changes expensive.

A paid scoping engagement (typically £3,000–£8,000 in the UK) should give you a fixed-price build quote you can actually hold the studio to, or enough clarity to take the brief elsewhere. Either way, you've spent four figures to de-risk a six-figure decision.

For more on what to put in that brief before you engage anyone, the software development brief guide is the fastest way to arrive at a scoping call with something worth scoping.