As a sole trader in the UK construction industry, understanding what expenses you can legally claim is essential for managing your tax bill and keeping your business financially healthy. Whether you're laying bricks, fitting kitchens, or managing a team of subcontractors, knowing which costs are deductible can make a big difference to your bottom line. This guide outlines the key allowable expenses you can claim as a construction professional, helping you stay compliant with HMRC while making the most of your hard-earned income.

🔧 1. Tools & Equipment

  • Purchase or hire of hand tools, power tools, ladders, scaffolding, etc.
  • Repairs and replacements.
  • Protective gear (e.g. helmets, boots, hi-vis jackets).

🏗️ 2. Materials & Supplies

  • Raw materials like timber, cement, bricks, plaster.
  • Consumables like nails, screws, sandpaper.

🚐 3. Vehicle Costs

If you use a vehicle for business:

  • Mileage allowance (45p per mile for the first 10,000 miles, 25p after).
  • Or actual costs: fuel, insurance, road tax, servicing, MOT, repairs & capital allowances (must apportion if also used personally).

🏠 4. Use of Home as Office

If you do paperwork/admin at home:

  • Flat rate method (simpler).
  • Or actual costs (portion of rent, utilities, internet, council tax).

🧾 5. Subcontractors & Labour

  • Payments to subcontractors (you must register for CIS – Construction Industry Scheme).
  • Labourer wages if directly employed.

💻 6. Admin & Office Costs

  • Stationery, printer ink, postage.
  • Mobile phone and internet (business use portion).
  • Software (accounting, CAD, project management).

📢 7. Advertising & Marketing

  • Business cards, flyers.
  • Website hosting and development.
  • Online ads (e.g. Google, Facebook).

🧰 8. Insurance

  • Public liability insurance.
  • Employer’s liability insurance (if you hire workers).
  • Tool and van insurance.

📚 9. Training & Memberships

  • Construction-specific courses (e.g. health & safety, CSCS).
  • Memberships (e.g. FMB, Federation of Master Builders, trade associations).
  • Professional subscriptions (e.g. accounting software, HMRC tools).

🚌 10. Travel & Subsistence

  • Travel to sites (if not your regular workplace).
  • Parking fees, tolls, congestion charges.
  • Meals when working away (not regular daily lunch).

💼 11. Accountancy & Legal Fees

  • Accountant’s fees (e.g. tax return, VAT filings).
  • Legal fees related to your business (contracts, disputes).

🧾 12. Bank Charges

  • Business account fees.
  • Loan interest or credit card charges (business use only).

🧮 13. General Expenses

The general rule is: you can claim any expense that is “wholly and exclusively” for your business. That means the cost must be directly related to the work you do and not for personal use. If something is used for both business and personal reasons—like your mobile phone—you can still claim part of the cost, but only the bit that relates to your business. The key is to be reasonable, keep good records, and always ask: “Would I have spent this money if I didn’t run my business?” If the answer is no, it’s probably an allowable expense.

⚠️ Things You Cannot Claim

  • Personal clothing (unless protective).
  • Daily commuting costs (to your regular base).
  • Fines or penalties (e.g. parking tickets).
  • Non-business-related entertainment or meals.

📌 Tips

  • Keep all receipts and records for at least 5 years after the 31 January submission deadline of the relevant tax year.
  • Use accounting software or apps; please ask us for advice.
  • You must register for VAT if your turnover exceeds £90,000 (as of the 2024 threshold)—this is a legal requirement, not optional.