How to Start a Web Development Business in the UK

Web development is one of the most in-demand freelance skills in the UK. Whether you specialise in front-end, back-end, full-stack, or e-commerce development, the earning potential is strong and the business can be run from anywhere with an internet connection.

Qualifications

No mandatory qualifications. Clients judge you on your portfolio, technical skills, and ability to deliver. That said, relevant qualifications and certifications help:

• Computer science degree — helpful but not required
• Platform certifications — Shopify, WordPress, AWS, Google Cloud
• Framework expertise — demonstrated through portfolio and code samples

Sole Trader or Limited Company?

Both are common for web developers:

Sole trader — simple, low admin. Good if you work with multiple direct clients on small-to-medium projects.

Limited company — more common for developers who work through agencies or on long-term contracts. Provides tax efficiency through the salary/dividend structure and addresses IR35 requirements.

If you work primarily through agencies, consider a limited company and pay attention to IR35 — the same rules that apply to IT contractors apply to web developers.

Registering with HMRC

Sole trader: Register for Self Assessment within three months.

Limited company: Register for Corporation Tax, PAYE, and potentially VAT.

VAT at £90,000 turnover. If your clients are UK businesses, they can reclaim the VAT you charge. For overseas clients, your services may be outside UK VAT scope.

Insurance

• Professional indemnity — essential. Covers errors in your code or design that cause client loss. £150–£500 per year.
• Public liability — if you visit client premises
• Cyber insurance — if you manage client hosting, databases, or handle user data

Claimable Expenses

• Computer hardware — laptop, desktop, monitors, peripherals
• Software and subscriptions — IDEs, code editors, hosting, domains, testing tools, CI/CD services, design tools
• Cloud services — AWS, Google Cloud, Azure, Vercel, Netlify (for development and testing)
• Domain registrations — for client projects and your own business
• Home office costs — flat rate or actual proportion
• Training and courses — new frameworks, languages, platforms, conferences
• Professional memberships — BCS (British Computer Society) if applicable
• Marketing — website, LinkedIn, portfolio hosting
• Phone and broadband
• Co-working space
• Subcontractor costs — designers, other developers, testers
• Accountancy fees

Accounted tracks all your subscriptions and expenses automatically.

Pricing

• Hourly rate — £40–£100+ depending on specialism and experience
• Day rate — £300–£800+
• Project-based (small business website) — £2,000–£10,000
• E-commerce site — £5,000–£30,000+
• Web application — £10,000–£100,000+
• Ongoing maintenance retainer — £200–£1,000+ per month

Project-based pricing is generally more profitable than hourly billing as your speed improves. Maintenance retainers provide valuable recurring income.

Industry-Specific Tax Considerations

IR35

If you work through an agency on long-term contracts, IR35 may apply. Multiple clients, your own equipment, genuine substitution rights, and control over how you deliver work all help establish outside IR35 status.

Digital Services VAT

If you sell digital products (themes, plugins, SaaS) to consumers in other countries, digital services VAT rules apply. Business-to-business services are generally outside UK VAT scope when supplied to overseas clients.

Capital Allowances

High-specification computers and monitors qualify for Annual Investment Allowance — deduct the full cost in the year of purchase.

R&D Tax Relief

If your development work involves genuine innovation (solving technical uncertainties), you may qualify for R&D tax relief. This is more commonly available to limited companies.

Building Your Business

• Portfolio — your most important marketing asset
• GitHub/open source — demonstrates technical ability
• LinkedIn — for professional networking
• Referrals — satisfied clients referring others is the best source of long-term work
• Agencies — web design agencies often subcontract development work
• Freelance platforms — Toptal, PeoplePerHour, Upwork (useful for building a track record)
• Content marketing — technical blog posts demonstrate expertise

Bookkeeping Tips

• Separate business and personal finances
• Track software subscriptions — they add up and are fully deductible
• Invoice milestones for larger projects — not just on completion
• Get deposits upfront — 30–50% is standard
• Monitor recurring revenue — maintenance contracts are valuable
• Set aside 25–30% of profits for tax

Accounted connects to your bank and categorises transactions with AI. Perfect for UK developers.

Key Deadlines

• 31 January — Self Assessment or Corporation Tax return
• Quarterly — VAT returns if registered

Getting Started

Web development offers outstanding flexibility and earning potential. Build your portfolio, register with HMRC, and keep your finances well-managed from your first project.

Ready to develop a solid financial foundation? Sign up for Accounted and let Penny handle the bookkeeping while you build great websites.