FAQ Guide: Tax Deductions for UK Plumbers

Author: Chris Neame BFP FCA CA(ANZ)


This guide is tailored for UK plumbers operating through a limited company, providing clarity on maximising tax deductions specific to corporate structures. By understanding these deductions, plumbing businesses can enhance profitability and ensure compliance with HMRC regulations.

Tools and Equipment

Q: Can the cost of tools and plumbing equipment be deducted by a limited company?

A: Yes, tools and equipment necessary for plumbing operations, such as pipe benders, boilers, and CCTV systems, are tax-deductible as business expenses.

Vehicle Expenses

Q: What vehicle expenses are deductible for a limited company?

A: All expenses related to vehicles used exclusively for business, including purchase, leasing, fuel, repairs, and insurance, are deductible. If the vehicle is used for mixed purposes, only the business portion can be claimed.

Materials and Supplies

Q: Are materials used in plumbing jobs deductible?

A: The cost of materials such as pipes, joints, and fixtures purchased for client projects are fully deductible when incurred by the limited company.

Protective Clothing

Q: Can expenses for protective gear be claimed?

A: The cost of necessary safety equipment and protective clothing for plumbing activities, like hard hats and safety boots, is deductible.

Marketing and Advertising

Q: Are marketing expenses deductible in a limited company structure?

A: Expenses on marketing and advertising aimed at promoting the business, including digital marketing and traditional advertising, are deductible.

Insurance Costs

Q: Can a limited company deduct insurance premiums?

A: Business-related insurance premiums, such as public liability and employer’s liability insurance, are fully deductible.

Training and Education

Q: Are training costs deductible for a limited company?

A: Costs associated with training or professional development that enhance plumbing skills or are necessary for maintaining professional qualifications are deductible.

Home Office Expenses

Q: What home office costs can a limited company deduct?

A: If part of a home is used exclusively for managing the business, a proportion of home expenses such as utilities and internet can be claimed, based on the portion of the home used for business.

Professional Fees

Q: Can legal and accounting fees be claimed?

A: Fees for professional services that are necessary for business management, including accounting and legal services, are deductible.

Entertainment Expenditure

Q: Is entertainment expenditure deductible?

A: Costs related to entertaining clients are not generally deductible against corporation tax. However, staff entertainment costs are allowable provided they are not incidental to entertainment provided to others and meet specific conditions set by HMRC.

Pension Costs

Q: Are pension contributions deductible?

A: Contributions to pension schemes for employees, including directors of the limited company, are deductible and can provide significant tax relief.

Subcontractor Costs

Q: Can costs for subcontractors be claimed by a limited company?

A: Payments to subcontractors for services directly related to business operations are deductible.


Operating a plumbing business through a limited company in the UK allows various expenditures to be claimed as deductions. Maintaining accurate records and understanding these deductions are key to optimising tax liabilities and supporting business growth. It’s advisable to consult with a tax professional to ensure compliance and maximise potential deductions.

For any further queries, please don’t hesitate to reach out via our Client Services email. We’re here to help!

About Neame & Co 

At Neame & Co we specialise in stress free company filing: the easy way to file your year end Company Accounts and Corporate Tax Return to Companies House and HMRC. We also offer monthly accounting services including payroll, bookkeeping, accounting, VAT returns, as well as company and personal tax and Finance Director services. Visit Neame & Co for more details on how we can help!

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Based in Berkhamsted, Hertfordshire and servicing the UK

Neame & Co is a trading name of Neame & Co Accountants Limited which is registered in England & Wales under Company Registration No. 14012065. Neame & Co is registered with the Information Commissioner’s Office under registration No. ZB377959. VAT Registration No. 422891687.