Complete Guide to Sole Trader Expenses – What You Can Claim

As a UK sole trader, understanding what you can claim as business expenses is essential for reducing your tax bill and staying compliant with HMRC rules. This guide covers everything you need to know.

What Are Allowable Business Expenses?

Allowable expenses are costs that are incurred "wholly and exclusively" for business purposes. These expenses reduce your taxable profit, meaning you pay less tax.

HMRC allows you to deduct these costs from your business income before calculating your tax bill. The key rule: if an expense has a clear business purpose, it's likely claimable.

Full List of Claimable Expenses

1. Office Costs

Stationery, printer ink, postage, software subscriptions, and computer equipment. If you work from home, you can also claim a portion of your household bills.

2. Travel Expenses

Train fares, bus tickets, flights, taxis, and mileage for business travel. For private vehicles, use HMRC's approved mileage rates (45p per mile for the first 10,000 miles).

3. Professional Fees

Accountant fees, legal fees, and professional subscriptions. These are often overlooked but are fully deductible.

4. Marketing and Advertising

Website hosting, domain renewals, Google Ads, Facebook Ads, business cards, and promotional materials.

5. Phone and Internet

Business use of your mobile phone, landline, and broadband. If you use them for both business and personal, claim a reasonable proportion.

6. Utilities and Rent

If you have a dedicated office space, claim rent, electricity, gas, and water. For home offices, use HMRC's simplified expenses flat rate (up to £26 per month).

7. Cost of Goods Sold

Raw materials, stock, and goods purchased for resale. Direct costs of producing your products or services.

What You Cannot Claim

• Personal expenses: Anything for personal use, even if paid from a business account.
• Drawings: Money you take from the business for personal use.
• Capital expenditure: Large equipment purchases (claim capital allowances instead).
• Fines and penalties: Parking fines, late filing penalties, etc.
• Client entertainment: Most client entertainment costs are not allowable.

Record Keeping Requirements

HMRC requires you to keep records for at least 5 years after the 31 January submission deadline. This includes:

• Bank statements and receipts
• Categorized transaction records
• Excel exports from Censitio
• Proof of expenses (receipts, invoices)

How Censitio Helps You Track Expenses

Manually tracking and categorizing expenses is time-consuming. Censitio simplifies the process:

• Import CSV bank statements in seconds
• Assign HMRC categories using an intuitive dropdown
• Export HMRC-ready Excel summaries for Self Assessment
• Desktop version auto-categorizes transactions with HMRC rules