What Expenses Can a Self-Employed Tradesman Claim in the UK? Full List for 2026
Quick Answer
Self-employed tradesmen can claim expenses including van costs, tools, fuel, public liability insurance, PPE, materials, phone bills, training, and accountancy fees. The HMRC rule is that the cost must be incurred wholly and exclusively for business. At the basic tax rate, every £1,000 of deductible expenses saves approximately £290 in income tax and National Insurance, and most tradesmen find thousands of pounds in unclaimed deductions when they review their spending properly.
Self-employed tradesmen can claim a wide range of business expenses against their income tax bill. The rule is simple: if the cost was incurred wholly and exclusively for business, it is deductible. Most tradesmen miss out on thousands of pounds each year by not claiming everything they are entitled to. This guide covers every major category of allowable expenses for 2026, with HMRC rules explained in plain English and practical tips for each category.
Vehicle and Travel Expenses
Your van is likely your biggest single claimable expense, and it is also the area where the most tax is left unclaimed. You can claim the van purchase (or lease payments if you are renting), fuel, insurance, servicing, MOT, road tax, parking, tolls, and van racking or shelving. If you use your van solely for business, every penny of those running costs is deductible.
You have two main options for claiming vehicle costs. The first is to claim actual costs, which means keeping all receipts and claiming the real expenditure plus capital allowances on the van itself. The second is to use HMRC's simplified mileage rate. For 2026, the approved mileage rate is 45p per mile for the first 10,000 miles in the tax year and 25p per mile after that. Using the mileage rate is simpler because you only need to keep a mileage log rather than collecting every fuel receipt, but it is often less generous for tradesmen who drive large, fuel-hungry vans or who travel very high annual mileage.
For most tradesmen covering 20,000 miles per year in a diesel van, claiming actual costs will result in a significantly higher deduction than the mileage rate. The mileage rate effectively caps at 25p per mile beyond 10,000 miles, whereas your actual fuel, servicing, and depreciation costs do not drop just because you cross that threshold. If you are not sure which method suits you, a quick calculation with a mileage expense tracker will show you the difference clearly.
One important point: once you choose the mileage rate method for a particular vehicle, you must stick with it for the life of that vehicle. You cannot switch to actual costs mid-way through ownership. This makes it worth doing the maths before you file your first return with a new van. Keep a mileage log regardless of which method you use, recording the date, start and end point, purpose of the journey, and miles covered. HMRC expects to see this evidence if they open an enquiry.
Parking charges, toll road fees, and congestion charges are also deductible on top of mileage or actual running costs, provided they relate to business journeys. Fines for parking illegally or speeding are never deductible, regardless of whether you were on a business trip at the time.
Tools and Equipment
All tools and equipment used in the course of your trade are deductible. This covers everything from basic hand tools to power tools, battery systems, ladders, scaffolding boards, mixing equipment, levelling gear, and any other kit you use on site. There is no minimum or maximum value threshold for tools to be claimable, provided they are used for business purposes.
For smaller items, the standard approach is to expense them in full in the year of purchase. For larger plant and machinery, the relevant mechanism is the Annual Investment Allowance (AIA). The AIA lets you deduct 100% of the cost of qualifying equipment in the year of purchase, up to a limit of £1 million per tax year. Since virtually no sole trader or small partnership comes close to that limit, the practical effect is that almost every tool or piece of equipment you buy can be fully deducted in the year you buy it, regardless of how many years you intend to use it.
This is considerably more generous than the alternative, which is the 18% per year writing-down allowance that applied before AIA was introduced and still applies to assets that fall outside the AIA. Under the writing-down allowance, a £2,000 power tool would generate deductions over many years rather than in the year of purchase, costing you real money in deferred tax relief.
Tool repair and maintenance costs are also deductible. If a battery pack fails and needs replacing, or a saw blade wears out, those replacement costs are expensed in full. Tool hire is deductible in the period you incur it. Keep all purchase invoices and receipts, and photograph high-value tools to support your records. If HMRC ever queries a capital allowances claim, having a clear record of what you bought and when you put it into business use will resolve the matter quickly.
Insurance
Business insurance premiums are fully deductible, and tradesmen typically carry several types that all qualify. Public liability insurance protects you if a customer or member of the public is injured or their property is damaged as a result of your work. Employers liability insurance is a legal requirement if you have any employees, including family members working in the business. Professional indemnity insurance covers claims arising from design or professional advice. Tool insurance covers theft or damage to your equipment. Van insurance is deductible as part of your vehicle running costs.
Tradesman insurance typically costs between £150 and £600 per year depending on your trade, your turnover, and the level of cover you take out. Despite being one of the more consistent annual outgoings for any self-employed tradesman, it is one of the most commonly forgotten deductions when tradesmen compile their self-assessment returns. If you pay monthly by direct debit, it is easy for the expense to blend into your general bank outgoings and get overlooked.
Personal life insurance and income protection insurance are not deductible against the business if you are a sole trader, because HMRC treats them as personal expenditure rather than business costs. The position changes if you operate through a limited company, where the company can sometimes pay for relevant life policies as a tax-efficient benefit, but that falls outside the scope of sole trader expenses. If you are considering the limited company route, the sole trader vs limited company guide covers the key differences in detail.
Clothing and PPE
Work clothing that is functional and not suitable for everyday wear is deductible. This covers a wide range of items that tradesmen buy regularly: steel-toe capped boots, hi-vis vests and jackets, hard hats, safety helmets, overalls, boiler suits, waterproof trousers, knee pads, safety gloves, and ear defenders. Branded workwear with your company name or logo is also claimable, because the branding makes it unsuitable for ordinary street wear.
The key HMRC test is whether the clothing could reasonably be worn away from work. Normal jeans, jumpers, or trainers worn on site are not deductible, even if you only ever wear them for work, because HMRC takes the view that they are inherently suitable for everyday use. The same logic applies to thermal base layers or standard fleeces worn under your overalls. These are considered personal clothing despite the working environment.
Specialist safety equipment required by law or industry standards is always deductible. If your work on construction sites requires you to wear a specific class of PPE, the cost of purchasing and replacing that equipment is a legitimate business expense. Washing and maintaining workwear is also deductible. HMRC publishes flat-rate deductions for laundry costs by trade if you do not want to track individual laundry expenses, though keeping actual receipts for a few months to establish a realistic figure is worth doing if your laundry costs are high.
Materials and Subcontractors
Materials you purchase for jobs are fully deductible in the period you use them. This covers timber, fixings, plumbing fittings, electrical cable, concrete, aggregates, paint, adhesives, sealants, and any other supplies consumed in completing work for customers. Delivery charges on materials are also deductible.
If you charge customers for materials on top of labour, the material cost and the material revenue both pass through your accounts. The net effect on your taxable profit is zero, but you still need to record both correctly. Builder's merchants often issue monthly statements rather than individual invoices, so make sure your filing system captures those statements or you download them from your trade account online.
Payments to subcontractors are deductible as a business cost. If you are a CIS contractor paying subcontractors, you must deduct CIS tax at the correct rate (0%, 20%, or 30% depending on the subcontractor's verification status) and pay it to HMRC on their behalf. The gross payment to the subcontractor is your deductible expense, not the net amount after deductions. Keep your subcontractor invoices and your CIS monthly returns as evidence.
Materials held in stock at the end of your accounting period that have not yet been used on jobs are not deductible until they are consumed. This is a relatively minor consideration for most sole trader tradesmen who buy materials job by job, but if you bulk-buy materials speculatively it is worth noting the year-end stock position.
Phone and Technology
Your mobile phone is an essential business tool as a tradesman. If you have a dedicated business phone contract, 100% of the cost is deductible. If you use a personal phone for both business and personal calls, you can claim the business proportion of the bill. HMRC accepts a reasonable estimated split, and most tradesmen find that 70-80% business use is readily justifiable given the volume of customer calls, supplier calls, and WhatsApp communication involved in running a trade.
Laptops and tablets used for quoting, invoicing, and business administration are deductible through capital allowances. Software subscriptions used for business are deductible in full in the period the subscription covers: this includes quoting and invoicing apps, job management software, accounting software such as FreeAgent or QuickBooks, cloud storage, and any other digital tools you pay for regularly. The cost of a website, domain name, and any online advertising are also deductible.
If you use a broadband connection at home partly for business (to send quotes, manage invoices, and communicate with customers), you can claim the business proportion of that bill. If business use is 30% of total broadband usage, then 30% of the annual bill is deductible. As with phone bills, keep a note of how you calculated your business-use percentage in case HMRC queries it.
Training and Qualifications
Training costs that maintain or update existing skills are deductible. For tradesmen, this is a broad category that covers a significant amount of regular expenditure: CSCS card renewals, first aid at work certificates, asbestos awareness courses, working at height refreshers, NVQ renewals, and trade body CPD requirements all qualify. The common thread is that these courses maintain your ability to work in the trade you are already in.
Trade body membership fees are also deductible. If you are a member of the Gas Safe Register, NICEIC, NAPIT, FMB, CIPHE, or any other recognised industry body, the annual subscription is a business expense. The same applies to professional indemnity register fees and any accreditation scheme costs.
The rule becomes more restrictive when training leads to a qualification that takes you into an entirely new trade. For example, a plumber who trains to become a gas engineer could face a challenge from HMRC on the basis that the new qualification represents a separate trade rather than an update to existing skills. In practice, HMRC does not often pursue this distinction for tradesmen working in adjacent trades, but it is worth being aware of the principle. Where a course leads to a wholly new qualification, the deductibility is less clear-cut and worth discussing with an accountant.
Keep all training receipts and the resulting certificates. The certificate proves the business purpose of the expenditure and gives you a clear audit trail if HMRC asks questions.
Accountancy and Professional Fees
Accountant fees for preparing your self-assessment tax return and advising on business finances are fully deductible. This is one of those expenses that pays for itself twice: you get tax relief on the fee, and a good accountant will typically identify deductions that more than cover their cost. If your accountant charges £500 per year and finds an extra £2,000 in deductions you had missed, you are substantially better off than filing yourself.
Bookkeeping software subscriptions are deductible in full. If you use QuickBooks, Xero, FreeAgent, or similar software to track your income and expenses through the year, those monthly subscription costs are a business expense. The same applies to invoicing apps and any other financial management tools you pay for as part of running the business. See the self-assessment guide for tradespeople for more on keeping records correctly.
Legal fees incurred for business purposes are deductible. This covers legal advice on business contracts, reviewing customer terms and conditions, debt recovery through a solicitor, and any other legal work directly related to the business. Legal fees for personal matters, even if they have some connection to the business, are not deductible. HMRC registration fees for VAT or CIS are not deductible. Fines, penalties, and interest charges from HMRC are never deductible, regardless of the circumstances.
Home Office
If you use part of your home for business purposes, including writing quotes, sending invoices, managing your books, ordering materials, and dealing with customer enquiries, you can claim a proportion of your home running costs as a business expense. This is an often-overlooked deduction that most sole trader tradesmen are entitled to.
HMRC offers a simplified flat-rate method based on the number of hours you work from home each month. For 25 to 50 hours per month the flat rate is £10, for 51 to 100 hours it is £18, and for more than 100 hours it is £26 per month. These figures are low compared to actual costs in most parts of the UK, but they require no calculation and no receipts beyond a rough log of hours worked at home.
Alternatively, you can calculate the actual proportion of your home that is used for business and claim that percentage of your home running costs. If you have a six-room house and use one room as a dedicated office or admin space, you could claim one-sixth of your rent or mortgage interest, utility bills, and council tax as a business expense. The actual method typically produces a larger deduction than the flat rate, particularly for tradesmen who do a significant amount of admin, but it requires more record-keeping. If you own your home, claiming a business use proportion of mortgage interest rather than mortgage capital repayments is important as only the interest element qualifies.
One consideration if you own your home: if you designate a room as exclusively for business use, it can create a partial capital gains tax liability when you eventually sell the property, as that room would no longer qualify for the principal private residence exemption. In practice, most tradesmen use a room primarily rather than exclusively for business, which avoids this issue entirely. If you are uncertain, speak to an accountant before making a claim for a dedicated home office.
Frequently Asked Questions
Can I claim the cost of my van if I bought it before I went self-employed?
Yes, you can. HMRC allows you to claim the market value of the van at the date you became self-employed using capital allowances, rather than the original purchase price. This is sometimes called a "brought-in" asset. The clock for capital allowances starts from the first day of self-employment, not the date you originally bought the vehicle. To establish the market value, you should use a recognised valuation guide such as Glass's or CAP, or obtain a written professional valuation. Keep a record of how you calculated the value because HMRC may ask for it if they review your capital allowances claim. The same principle applies to tools or equipment you owned before starting the business and which you bring into business use.
Do I need receipts for everything I claim?
HMRC expects you to keep adequate records to support every expense claim on your self-assessment return. For most purchases, a till receipt or purchase invoice is sufficient. Bank or credit card statements alone are sometimes accepted for smaller amounts, but for tools, equipment, or any item costing more than a few hundred pounds, a proper purchase invoice is safer. Fuel claims require a mileage log recording the date, start and end points, business purpose, and miles covered for each journey. Records must be kept for at least five years and ten months after the end of the relevant tax year, so a receipt from the 2025/26 tax year needs to be kept until at least January 2032. Digital copies are accepted by HMRC, so photographing receipts with your phone as you go is a practical system for keeping on top of it throughout the year.
Can I claim food and drink expenses?
Only in limited circumstances. If you are working away from your normal base overnight, the cost of meals is deductible because you are necessarily incurring additional expenditure as a direct result of the business trip. Day-to-day meals eaten while working on jobs are not deductible, because HMRC considers eating a personal need that exists regardless of whether you are working or not. If you attend a trade show, conference, or training course away from your normal place of work, the subsistence costs incurred during that trip are more likely to be accepted. This is one of the most frequently rejected expense claims at HMRC enquiries, so it is important to apply the rule conservatively and only claim where the overnight or away-from-base test is clearly met.
What is the Annual Investment Allowance and how does it apply to tools?
The Annual Investment Allowance (AIA) is a tax relief that lets you deduct 100% of the cost of most plant and machinery in the year of purchase, rather than spreading the deduction over many years. It applies to tools, powered equipment, ladders, scaffolding, vehicles used for business, and most other physical assets used in your trade. The current AIA limit is £1 million per tax year, which means virtually every sole trader and small partnership can write off their entire annual equipment spend in one go. Before AIA, large items would be subject to a writing-down allowance of 18% per year, meaning the full cost might take 15 or more years to fully deduct. The AIA effectively eliminates that delay for almost all tradesmen, making the timing of equipment purchases a less significant tax consideration. Use the sole trader tax calculator to see how an equipment purchase affects your tax bill in the year you buy it.
Can I claim expenses if I am under the VAT threshold?
Yes, expenses are claimed against income tax entirely separately from VAT registration, and the two systems operate independently. If you are not VAT-registered, you claim the full VAT-inclusive cost of any purchase as your deductible expense. For example, if you buy materials for £120 including VAT, your deductible expense is £120. If you are VAT-registered, you claim the net cost of £100 as your income tax deduction and reclaim the £20 VAT separately on your VAT return. Being under the VAT threshold does not reduce your entitlement to income tax deductions in any way. See the VAT guide for UK tradesmen for more detail on how VAT registration affects your business finances.
How much tax can I save by claiming all my expenses?
At the basic rate of income tax (20%) combined with Class 4 National Insurance contributions (9%), every £1,000 of deductible expenses reduces your tax and NI bill by approximately £290. If your profits push you into the higher rate tax band (40% income tax), the saving per £1,000 of expenses rises to approximately £490. In practice, most self-employed tradesmen who have not reviewed their expense claims in detail find between £2,000 and £5,000 in overlooked deductions, representing a tax saving of £600 to £1,500 per year at the basic rate. Common missed items include tool purchases made during the year, insurance premiums paid monthly by direct debit, training and CSCS card costs, and the home office flat-rate deduction. Running your expenses through a sole trader tax calculator at the start of the year rather than waiting until January gives you a clearer picture of your likely tax bill and time to plan accordingly.
Track Your Expenses Automatically
Keeping on top of expenses through the year is much easier than reconstructing them at January. Sleepless Tradesman lets you log expenses, track mileage, and generate invoices from your phone, so nothing gets lost between the job and your tax return.