The IT contracting world moves fast — and so do the tax rules that govern it. Whether you’re a software developer in London, a cybersecurity consultant in Manchester, or a cloud architect working remotely from Bristol, your tax situation is uniquely complex and constantly evolving.
The IT contracting world moves fast — and so do the tax rules that govern it. Whether you're a software developer in London, a cybersecurity consultant in Manchester, or a cloud architect working remotely from Bristol, your tax situation is uniquely complex and constantly evolving.
We specialise in Self Assessment for IT contractors, understanding the specific challenges you face: from IR35 status and limited company taxation to hardware claims and home office deductions. Our ACCA-qualified accountants ensure you navigate the complexities of contracting with confidence and claim every allowable expense you're entitled to.
Fixed-fee service available — no surprises, just expert support tailored to your IT contracting career.
Whether you're a developer in London, a project manager in Birmingham, or a DevOps engineer in Edinburgh, our specialist accountants understand the nuances of IT contracting. We help all types of IT professionals with their Self Assessment returns:
Key considerations: Software licences, cloud services, and development tools
Key considerations: Specialist equipment, professional indemnity, and CPD
Key considerations: Cloud platform certifications and subscription costs
Key considerations: Data processing costs, software licences, and research
Key considerations: Project management software and training costs
Key considerations: Foreign income, double taxation, and cross-border IR35
IT contractors face a unique set of tax challenges that generic accountants often miss. Here are the most common issues we help IT professionals resolve:
IR35 remains the single biggest tax challenge for IT contractors in 2026. The off-payroll working rules apply to medium and large private sector clients, who are responsible for determining your IR35 status.
We help you understand your IR35 status, provide evidence to support your position, and ensure your Self Assessment accurately reflects your employment status — whether you're inside or outside IR35. Many IT contractors in London and the South East have been affected by these rules, and we specialise in navigating this complex area.
Many IT contractors miss out on significant tax deductions because they don't know what they can claim. Common allowable expenses for IT contractors include:
IT contractors typically operate through a limited company for tax efficiency, allowing you to take income as a combination of salary and dividends. However, the IR35 landscape and contracting model significantly influence which structure is best for your specific situation.
We help you determine the most tax-efficient structure for your IT contracting work, manage your limited company compliance (including Corporation Tax, VAT, and payroll), and ensure you're not paying more tax than necessary.
When you purchase IT equipment for your contracting business, you can claim capital allowances to reduce your taxable profit. The Annual Investment Allowance (AIA) allows you to claim 100% of the cost of qualifying equipment up to £1,000,000 (2026/27).
We ensure you claim full capital allowances on laptops, servers, networking equipment, and other IT assets. Contractors in tech hubs like Manchester, Reading, and Cambridge often have significant equipment costs that can be offset against their profits.
Many IT contractors work remotely, either from home or from co-working spaces like WeWork in London, Manchester, or Bristol. You can claim home office expenses for the proportion of your home used exclusively for business purposes.
We help you calculate and claim home office costs, including electricity, heating, internet, and a proportion of your rent or mortgage interest. The simplified flat rate is £6 per week, but we can help you claim more by calculating actual costs if they're higher.
Many IT contractors work for international clients or spend time working abroad. This creates complex cross-border tax issues, including double taxation, Statutory Residence Test, and withholding tax on foreign income.
We help IT contractors with international income, ensuring you're not paying tax twice on the same income and that you're compliant with both UK and foreign tax authorities. This is particularly relevant for contractors in cities like London, which has a high concentration of international tech firms.
If your taxable turnover exceeds £90,000 (2026/27 threshold), you must register for VAT. Many IT contractors operate above this threshold, particularly those with long-term contracts in London and the South East.
We advise on VAT registration, VAT returns, and whether the Flat Rate Scheme is beneficial for your contracting business. We also help with reverse charge VAT on cross-border IT services.
IT contractors have multiple tax deadlines to manage: Self Assessment, Corporation Tax, PAYE, and VAT. Missing any of these deadlines can result in automatic penalties that can be costly and time-consuming to resolve.
We help you stay on top of all your tax deadlines, ensuring you never miss a filing date. Our deadline checker can help you keep track of key dates, and we handle all submissions on your behalf.
We start by understanding your specific situation — whether you're operating through a limited company, your IR35 status, and what your contracting model looks like. This helps us tailor our service to your needs.
We'll guide you on exactly what documents you need for your tax return — including invoices, expense receipts, equipment purchases, and contract details.
We'll identify every allowable expense unique to IT contracting — from hardware and software to home office costs, travel expenses, and professional subscriptions.
We'll review your contracts and working practices to assess your IR35 status, ensuring you're correctly classified and your Self Assessment reflects the right tax treatment.
Our ACCA-qualified accountants prepare your Self Assessment return, Corporation Tax return (if applicable), and VAT returns, double-checking all calculations before submission to HMRC.
Tax doesn't end with the return. We provide year-round support for tax planning, penalty avoidance, and strategic advice to help you build wealth efficiently.
David is a full-stack software developer based in London. He operates through his own limited company (PSC) and works on long-term contracts for financial services clients in Canary Wharf. His income breakdown for 2025-26 was:
David approached us because he was concerned about his IR35 status — his client had recently reviewed all contractor roles and he was worried about being moved inside IR35. He was also unsure about capital allowances on his equipment and whether he was claiming all allowable expenses through his limited company.
He had been managing his own accounts but felt he was missing deductions and wasn't confident in his VAT and Corporation Tax compliance. He was also unsure about his Director's salary vs dividend strategy for tax efficiency.
“I had no idea I could claim so many expenses through my limited company. The team at Right Tax Returns gave me confidence in my IR35 position and saved me thousands in tax through proper expense claims and remuneration planning. I now have peace of mind that my tax returns are correct and I'm not paying more tax than I should.”
— David, Software Developer & IT Contractor
💰 Total tax saved through our advice: £4,600
Note: Corporation Tax rates have changed significantly, making tax planning more important than ever for IT contractors in London, Manchester, and across the UK.
Key change: HMRC's CEST tool remains the primary status determination tool, but its reliability has been questioned. We recommend professional IR35 reviews for all contractors, particularly those in London and the South East.
Important: IT contractors operating through limited companies pay NI on salary but not on dividends, making the salary/dividend mix crucial for tax efficiency.
Tip: IT contractors typically have multiple deadlines. Our deadline checker can help you stay on track.
Do I need to file a Self Assessment as an IT contractor in the UK?
Yes, if you operate through a limited company, work as a sole trader, or have income from contracting outside PAYE, you must file a Self Assessment. Even if you're a deemed employee under IR35, you may still need to report income depending on your circumstances.
What expenses can IT contractors claim on their tax return?
IT contractors can claim hardware and software purchases, cloud service subscriptions, home office costs, travel to client sites, professional subscriptions, CPD courses, and specialist IT equipment. Many contractors miss out on claiming these essential deductions.
What is the difference between inside and outside IR35 for IT contractors?
If you are deemed outside IR35, you are considered truly self-employed and can operate through your limited company with full tax efficiency. If you are inside IR35, you are treated as an employee for tax purposes, and your limited company must deduct PAYE and National Insurance before paying you.
Can IT contractors claim for computers and software?
Yes, you can claim capital allowances on computers, laptops, monitors, and other IT equipment used for your contracting work. Software licences and subscriptions can also be claimed as allowable expenses against your taxable income.
What is the deadline for IT contractors to file Self Assessment?
The online Self Assessment deadline is 31 January 2027 for the 2025-26 tax year. If you're filing a paper return, the deadline is 31 October 2026. We strongly recommend filing online by 31 January to avoid late filing penalties.
Should I operate through a limited company or as a sole trader as an IT contractor?
IT contractors typically benefit from operating through a limited company for tax efficiency, allowing you to take income as a combination of salary and dividends. However, IR35 status and your contracting model significantly influence which structure is best for your specific situation. Contractors in London, Manchester, and Birmingham commonly operate through limited companies.
Can IT contractors claim home office expenses?
Yes, you can claim home office expenses if you work from home as an IT contractor. This includes a proportion of your electricity, heating, internet, and rent/mortgage interest. The simplified flat rate is £6 per week, but you may claim more by calculating actual costs.
How does IR35 affect IT contractors in 2026?
IR35 remains a critical factor for IT contractors in 2026. The off-payroll working rules apply to medium and large private sector clients, who are responsible for determining your IR35 status. Understanding your status is essential for accurate Self Assessment filing and tax planning. This affects contractors in London, Manchester, Bristol, and across the UK.
We understand the unique tax landscape for IT contractors — from IR35 and limited company taxation to capital allowances on equipment and home office deductions. Our team is trained in IT contractor tax matters, not just generic self-employment.
Unlike traditional high-street accountants who charge by the hour, we offer fixed pricing for our services. You know exactly what you're paying before we start work. No hidden fees, no unexpected bills.
All our returns are prepared and reviewed by ACCA-qualified accountants. You're not relying on an automated system or an unqualified assistant — you get professional expertise every step of the way.
With our fixed-fee model, you can ask as many questions as you need — without being charged for every email or phone call. We're here to support you throughout the year, not just during tax season.
We guarantee to file your return before the deadline. We'll never leave your return to the last minute, and we'll always keep you informed of our progress.
If HMRC questions your return, we handle all correspondence on your behalf. You don't have to face HMRC alone — we're your advocate and tax partner.
Ready to take the stress out of your Self Assessment?
Join hundreds of satisfied IT contractors who trust us with their tax returns. Our ACCA-qualified team understands the unique tax challenges you face — and we'll ensure your return is accurate, complete, and filed on time.
How it works: Complete our online form → Make advance payment → We handle your return with HMRC
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📞 Have questions? Contact our specialist IT contractor tax team
We're qualified UK accountants who specialise in Self Assessment tax returns.
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