How Much Does a Full-Stack Developer Cost in the UK? (2026 Pricing Guide)

What a full-stack developer actually does

A full-stack developer works across every layer of a web application: the interface people click on (frontend), the server logic and APIs behind it (backend), the database that stores everything, and the deployment pipeline that gets it live. Many also build mobile apps that share the same backend.

That breadth is why full-stack developers are good value for smaller teams. Instead of coordinating a frontend contractor, a backend contractor, and someone to handle hosting, one person owns the whole build. Fewer hand-offs means fewer misunderstandings, and fewer invoices.

A typical modern full-stack toolkit looks like this:

• Frontend: React and Next.js, styled with Tailwind CSS
• Backend: Node.js with REST or GraphQL APIs, authentication, and payments (usually Stripe)
• Database: PostgreSQL, MySQL, or MongoDB
• Mobile: React Native for iOS and Android from one codebase
• DevOps: automated testing and deployment (CI/CD) to platforms like Vercel

Full-stack developer hourly rates in the UK

For outsourced full-stack development, expect to pay somewhere between £50 and £120 per hour. Where a project falls in that range depends on a few things:

• Complexity: a content update or a bug fix sits at the lower end; payment flows, data migrations, or performance work on a large codebase sit higher.
• Urgency: work that has to be delivered in 24 hours, or out of hours, costs more.
• Seniority and accountability: a developer who scopes, architects, and takes responsibility for production costs more than one who only implements tickets.
• Existing code quality: picking up a messy or undocumented codebase takes longer to do safely.

Hourly billing suits work with an uncertain or changing scope: fixes, small features, ongoing improvements, and agencies that need overflow capacity. Ask for time to be logged and reported so you can see where the hours go.

Fixed project prices: what common builds cost

If you know what you want built, a fixed-price quote gives you cost certainty. Most full-stack projects for startups and SMEs fall between £1,500 and £10,000. These are typical ranges, not quotes; your scope decides the final number.

A good fixed quote is broken into milestones, each with something working you can see and test. If a quote is a single number with no breakdown, ask for one.

Freelancer vs agency vs hiring: how the costs compare

The hourly rate is only part of the picture. What matters is the total cost of getting working software, and how long it takes to start.

Hiring makes sense once you have enough steady work to keep a developer busy full time, and someone technical to manage them. Before that point, the true cost of an employee is higher than the salary suggests: employer National Insurance (15% above the threshold), workplace pension contributions (at least 3%), equipment, software licences, and a recruitment fee that is commonly 15–25% of first-year salary if you use an agency.

Costs people forget to budget for

• Hosting and infrastructure: often free or a few pounds a month at launch, rising with traffic and data.
• Third-party services: payments (Stripe takes a percentage per transaction), email sending, maps, AI APIs, and app store fees (Apple's developer programme is an annual fee).
• Maintenance: dependencies need updating, browsers and phones change, and security patches don't wait. Budget for ongoing hours or a retainer after launch.
• Design and copy: many developers work from your designs and words. If you need those created, price them separately.
• Scope creep: the most expensive line item is usually the feature added halfway through. Keep a list for version two.

How to keep your full-stack development costs down

• Build the smallest useful version first. An MVP that proves people will pay is worth more than a polished product nobody uses.
• Use a proven, mainstream stack. It's cheaper to build, cheaper to hire for later, and easier to hand over.
• Insist on owning your code and accounts. Your repository, your hosting, your domain. It keeps you free to change developer without starting again.
• Agree milestones with demos. You catch misunderstandings early, when they're cheap to fix.
• Pick the right pricing model: fixed price for a clear scope, hourly for changing priorities, and a retainer for continuous development after launch.

Frequently asked questions