25 Self-Employed Expenses UK Freelancers Forget to Claim (2026 Tax Year)
Most UK freelancers and sole traders underclaim their expenses. Not because they're lazy — because they don't know what's claimable.
HMRC's rule is simple: any expense that is "wholly and exclusively" for business purposes is deductible. For mixed-use items (like your phone), you can claim the business proportion.
Here are 25 expenses that UK freelancers regularly forget to claim — some worth hundreds of pounds a year in tax savings.
🏠 Working From Home
1 Working From Home Flat Rate Save £62-£125/year
Even if you don't have a dedicated home office, you can claim £6/week (£312/year) using HMRC's simplified expenses if you work from home regularly. This requires zero receipts — just claim the flat rate. At the basic tax rate (20%), that's £62 saved. Higher rate (40%) saves £125.
Alternatively, calculate actual costs (proportion of rent/mortgage interest, council tax, electricity, heating, broadband) for potentially more — but you need records.
2 Broadband and Internet Save £50-100/year
If you work from home, you can claim the business proportion of your broadband. If you use your internet 50% for work, claim 50% of the bill. Typical annual broadband: £300-500, so claiming 50% = £150-250 off your taxable profit.
Missed by: People who already claim the working from home flat rate and don't realise broadband can be claimed separately (though you can't claim the flat rate AND actual broadband — it's one method or the other for home expenses).
3 Electricity and Heating for Your Office Save £40-80/year
If you calculate actual costs instead of the flat rate, don't forget electricity and heating for your work area. Calculate the floor area of your office as a proportion of your home, then apply that to your energy bills. With energy costs still elevated, this can be significant.
💻 Technology and Software
4 Software Subscriptions Save £100-300/year
Every software subscription you use for work is claimable: Adobe Creative Cloud, Microsoft 365, Canva Pro, Figma, project management tools, cloud storage, domain registrations, hosting, email marketing tools. These add up fast — many freelancers spend £500-1,500/year on software without claiming it.
5 Mobile Phone (Business Proportion) Save £40-100/year
You can claim the business proportion of your mobile phone contract. If you use your phone 60% for work (calls, emails, research), claim 60% of your monthly bill. A £30/month contract = £216/year at 60% business use = £216 off taxable profit.
Tip: If you have a separate business phone, claim 100% of it.
6 Computer Equipment and Peripherals Save £50-500+/year
Laptops, monitors, keyboards, mice, webcams, headsets, USB hubs, external drives — all claimable if used for business. For items under £1,000, you can usually claim the full cost in the year of purchase using the Annual Investment Allowance. For mixed-use items, claim the business proportion.
Often missed: Replacement cables, adapters, laptop bags, monitor stands, desk lamps.
7 Website and Domain Costs Save £20-200/year
Domain renewals, website hosting, SSL certificates, CDN services, premium WordPress themes/plugins, email hosting — all business expenses. Also includes any one-off website design or development costs.
📚 Professional Development
8 Books and Publications Save £20-100/year
Business books, technical manuals, industry publications, journal subscriptions — all claimable if relevant to your work. This includes Kindle purchases, Audible subscriptions (for business audiobooks), and physical books.
The test: Would you buy this if you weren't self-employed? If not, it's a business expense.
9 Online Courses and Training Save £50-500/year
Udemy courses, LinkedIn Learning, Skillshare, Coursera, MasterClass (if business-relevant), webinars, workshops, conference tickets — all legitimate expenses. The training must relate to your current business, not a completely new career.
10 Professional Body Memberships Save £20-200/year
IPSE (freelancer association), professional institutes (RIBA, CIMA, CIPD), trade associations, chambers of commerce. If membership is relevant to your work, it's claimable. This includes annual renewal fees.
11 Conferences and Events Save £50-500/year
Ticket costs, travel to the event, accommodation if overnight — all claimable for work-related conferences. Includes industry meetups, trade shows, and networking events. Keep the event programme as evidence of business relevance.
🚗 Travel and Transport
12 Business Mileage at 45p/Mile Save £100-1,000+/year
If you drive your own car for business, you can claim 45p per mile for the first 10,000 miles and 25p/mile after that. This is HMRC's approved mileage rate and covers fuel, insurance, wear and tear — everything.
A freelancer driving 5,000 business miles per year can claim £2,250 off taxable profit. At 20% tax, that's £450 saved.
What counts as business mileage: Trips to client sites, the bank, the post office (for business), suppliers, networking events. Not: Your regular commute (if you have a fixed office away from home).
13 Train, Bus, and Tube Fares Save £50-500/year
Any public transport used for business travel is fully claimable. Keep your tickets or use contactless statements as receipts. Includes Uber and taxi fares for business journeys.
14 Parking and Congestion Charges Save £20-200/year
Parking at client sites, parking for business meetings, ULEZ and congestion charges for business trips — all claimable. Parking fines are NOT claimable (even if incurred on a business trip).
15 Bicycle Expenses Save £10-50/year
If you cycle for business (to client meetings, the post office), you can claim 20p per mile. Also claim repairs, maintenance, and accessories for a bicycle used for business travel.
💰 Financial Costs
16 Bank Charges and Fees Save £10-100/year
Business bank account monthly fees, transaction fees, overdraft interest (on a business account), PayPal fees, Stripe fees, foreign exchange fees on business transactions — all claimable. If you use a personal account for business, claim the proportion of fees relating to business transactions.
17 Accountancy and Tax Software Fees Save £50-500/year
Your accountant's fees are a business expense. So is your accounting software subscription (Xero, QuickBooks, FreeAgent), tax return preparation fees, and any bookkeeping services. With MTD adding software costs from April 2026, make sure you're claiming these.
18 Professional Indemnity Insurance Save £20-150/year
PI insurance, public liability insurance, business contents insurance — all claimable. Many freelancers pay £100-500/year for PI insurance and forget to claim it. This also includes cyber insurance, which is increasingly relevant.
19 Bad Debts Save varies
If a client doesn't pay an invoice and you've exhausted reasonable efforts to collect, you can write off the bad debt as an expense. You must have included the income in your accounts first, then claim the write-off when it becomes clear you won't be paid. Full guide on bad debt relief →
📦 Office and Supplies
20 Stationery and Office Supplies Save £10-50/year
Pens, notebooks, printer paper, ink cartridges, envelopes, stamps, sticky notes, desk organisers. Small items that individually seem insignificant but add up over a year. Keep your Amazon/Ryman receipts.
21 Postage and Shipping Save £10-100/year
Royal Mail stamps, courier costs for sending work/products, PO Box rental if you use one for business correspondence. Includes returns shipping if you sell physical products.
22 Printer Ink and Paper Save £20-80/year
If you print contracts, invoices, or client materials, the ink and paper costs are claimable. Claim the business proportion if you also print personal items. A set of printer cartridges can cost £30-80 — that's real money off your tax bill.
🤝 Marketing and Client Costs
23 Marketing and Advertising Save £50-500+/year
Google Ads, Facebook Ads, LinkedIn Premium, business cards, flyers, directory listings, sponsorship of local events, email marketing tools (Mailchimp, ConvertKit) — all legitimate business expenses. This is one of the most commonly under-claimed categories.
24 Client Entertainment (Limited) Save £0 directly
Important nuance: Client entertainment (meals, drinks, events) is NOT deductible for tax purposes in the UK. However, it IS deductible for VAT purposes if you're VAT-registered. The common mistake is thinking you can claim client lunches against income tax — you can't. But meals while travelling for business (subsistence) ARE claimable if you're away from your normal place of work.
25 Stock Photography and Creative Assets Save £20-200/year
Shutterstock, iStock, Adobe Stock subscriptions, font licences, icon packs, UI kits, template purchases — anything you buy to produce work for clients or your own business. Designers, marketers, and content creators often spend hundreds here without claiming it.
📊 Tax Tracker Spreadsheet — £7
Track all 25 expense categories with our pre-built spreadsheet. HMRC-compliant categories, automatic tax estimates, and a quarterly summary view for MTD. Never miss a deduction again.
Get the Tax Tracker →How Much Could You Save?
Let's do the maths for a typical UK freelancer who works from home, drives occasionally for client meetings, and uses standard software:
| Expense | Annual Cost |
|---|---|
| Working from home flat rate | £312 |
| Software subscriptions (various) | £600 |
| Mobile phone (60% business) | £216 |
| Business mileage (3,000 miles × 45p) | £1,350 |
| Accountancy fees | £300 |
| PI insurance | £200 |
| Books, courses, memberships | £250 |
| Office supplies and postage | £100 |
| Bank/PayPal fees | £80 |
| Marketing costs | £150 |
| Total claimable expenses | £3,558 |
Tax savings:
- Basic rate taxpayer (20%): £711 saved
- Higher rate taxpayer (40%): £1,423 saved
- Plus National Insurance savings (9%): an extra £320
That's potentially over £1,700 back in your pocket if you're a higher-rate taxpayer. And these are conservative estimates — many freelancers have significantly higher software and travel costs.
The 5-Minute Expense Audit
Before tax year end on 5 April, do this quick check:
- Review your bank statements for the past 12 months. Highlight any business-related transactions you haven't recorded.
- Check your email for software subscription receipts (Adobe, Microsoft, Canva, etc.).
- Review your Amazon orders — any office supplies, books, or equipment?
- Check your phone for photos of receipts you took but never logged.
- Estimate your business mileage for the year. Check Google Maps timeline if you're not sure about distances.
🏁 Self-Assessment Recovery Kit — £9
Step-by-step guide to filing your Self Assessment accurately and on time. Includes expense checklist, deadline calendar, penalty appeal templates, and HMRC contact scripts. Perfect for first-timers and procrastinators alike.
Get the Recovery Kit →Expenses You Can NOT Claim
To avoid HMRC trouble, here's what's definitely not claimable:
- Regular clothing — suits, smart-casual, even if only worn for work
- Fines and penalties — parking fines, HMRC penalties, speeding fines
- Client entertainment — meals and drinks for clients (UK rule, unlike the US)
- Personal proportion of mixed expenses — only claim the business %
- Capital items you keep personally — if the laptop becomes your personal device, the rules change
- Your own salary — as a sole trader, money you take from the business isn't an expense (it's drawings)
- Income tax and National Insurance — these are taxes on profit, not business expenses
With MTD Starting in April: Track Expenses Quarterly
If you're affected by Making Tax Digital from April 2026, you'll need to report expenses quarterly instead of annually. This actually makes the system above easier — smaller batches of expenses to categorise, and you'll catch forgotten items sooner.
The key change: you need to categorise expenses by HMRC's standard categories (office costs, travel, clothing, stock, legal/financial, marketing, training, etc.). Your MTD software should handle this, but if you're using a spreadsheet, make sure your categories match.
For more on MTD preparation: 10 common MTD mistakes to avoid.
🚀 Freelance Starter Kit — £14
Everything a new freelancer needs: business registration guide, expense tracker templates, invoice templates, contract templates, and a first-year tax planning calendar. The complete startup bundle.
Get the Starter Kit →Disclaimer: This guide is for informational purposes only and doesn't constitute tax advice. HMRC's rules on allowable expenses can be complex and depend on individual circumstances. For advice specific to your situation, consult a qualified accountant or tax adviser. Information accurate as of March 2026.