Running your own business means keeping track of more than sales and invoices. Accurate expense records can help prevent you paying tax on money spent running your business. This Self Employed Tax Deductions Checklist UK covers costs sole traders and freelancers may claim in 2026/27.
The key principle is that an expense must be incurred wholly and exclusively for business purposes. Where an item has both business and personal use, claim only the business proportion and keep a reasonable record of how you calculated it.
1. Office, Premises and Home-Working Costs
You can usually include business premises rent, business rates, utilities, insurance, repairs and cleaning. Office expenses for self-employed people may also include stationery, postage, printing, printer ink and business-use telephone costs.
If you work from home, you may claim a reasonable business share of costs such as heating, electricity, rent, Council Tax and internet. Alternatively, eligible sole traders and partnerships can use HMRC’s simplified home-working rate if they work at least 25 hours a month from home: £10 per month for 25 to 50 hours, £18 for 51 to 100 hours, and £26 for 101 hours or more. Phone and internet costs are considered separately.
2. Business Travel and Vehicle Expenses
Claim journeys made for business, such as visiting clients, attending work-related meetings or travelling between temporary work locations. Eligible business travel expenses can include train and bus fares, taxis, parking, tolls and accommodation for qualifying business trips. Ordinary commuting to a regular workplace is not allowable.
For eligible cars and vans, the self-employed mileage allowance UK simplified rate for 2026/27 is 55p per business mile for the first 10,000 miles and 25p for each additional mile. The motorcycle rate is 24p per mile. Keep a mileage log showing the date, destination, business purpose and distance. When using mileage rates, do not also claim fuel, insurance and repairs for that same vehicle.
3. Equipment, Tools and Technology
Business computers, tools, machinery, furniture and specialist equipment may qualify for relief through expenses or capital allowances for self-employed businesses, depending on the accounting method and purchase.
Software subscriptions, cloud storage, web hosting, domain renewals and business-use apps are common allowable running costs.
Keep invoices and restrict any mixed-use claim to the business share.
4. Stock, Materials and Subcontractors
If you sell products or make items, record the cost of stock, raw materials, packaging and goods bought for resale. You may also claim qualifying payments to employees and subcontractors, including wages and relevant employer costs. Keep contracts, invoices, payroll records and proof of payment.
5. Marketing, Advertising and Professional Services
Your tax-deductible business expenses UK checklist can include website costs, SEO, online advertising, business cards, directory listings and marketing materials.
Accountant fees, bookkeeping, business-related legal advice, professional indemnity insurance, public liability cover and relevant trade memberships may also qualify.
For freelancers and social media professionals, business-use portions of phone bills, internet, cameras, lighting, editing software and content-production tools may be relevant. Products or services received in exchange for promotional content can have tax implications, so record gifted or sponsored items accurately rather than assuming they are tax-free.
6. Financial and Insurance Costs
Eligible costs can include business bank charges, payment-processing fees, business credit-card charges, insurance premiums and interest on qualifying business borrowing. Only the business-related element is claimable. Loan repayments themselves are not an expense, and special limits or rules may apply to interest.
7. Costs You Usually Cannot Claim
The sole trader tax deductions rules do not make personal spending deductible simply because it helps you feel ready for work.
Everyday clothes, suits, ordinary shoes, personal meals, gym membership, private health insurance, personal travel, fines, penalties and client entertainment are generally not allowable. Your own drawings, personal tax bills and personal National Insurance contributions are not business expenses either.
Daily meals are normally private. Food and accommodation may qualify when they arise from genuine business travel, subject to the rules and circumstances. Personal pension contributions are not deducted as ordinary trading expenses; pension tax relief is dealt with separately.
8. Check the £1,000 Trading Allowance
The £1,000 trading allowance may be simpler than recording actual expenses if your eligible trading income is modest or your costs are low. You generally choose between claiming the allowance and deducting actual business expenses for that income. You cannot claim both against the same trading income, so compare the figures before deciding.
9. Keep Records and Prepare for Making Tax Digital
Save invoices, receipts, bank statements and mileage logs. You do not usually send receipts with your return, but you must keep evidence. Self-employed records generally need to be retained for at least five years after the 31 January submission deadline for the relevant tax year.
Making Tax Digital for Income Tax began on 6 April 2026 for qualifying sole traders and landlords with qualifying income above £50,000, based on their 2024/25 tax return. Those in scope must use compatible software, maintain digital records and send quarterly updates. This changes how income and expenses are reported, not which costs are allowable.
Make Every Allowable Expense Count
Review your spending monthly instead of waiting until tax-return season. Separate personal and business transactions, record the purpose of each purchase and check mixed-use costs carefully. A consistent process helps you claim legitimate self-employed tax deductions, stay organised and reduce avoidable errors.
Eco Outsourcing can support UK businesses with bookkeeping and accounting processes, helping owners maintain clearer records and spend more time running their business.
Read More: https://lifeline-homestyle.com/
