As a sole trader, you’re responsible for keeping your own financial records and filing your own tax return. It doesn’t have to be complicated — but getting it right from the start saves a lot of stress later. Here’s everything you need to know.
What Records Does a Sole Trader Need to Keep?
HMRC requires sole traders to keep records of all business income (sales invoices, receipts), business expenses, bank statements and any personal money you’ve put into the business. Records must be kept for at least 5 years after the self assessment deadline.
💡 Key takeaway
Dividends are taxed at a lower rate than salary, but only after corporation tax has been paid on profits — the ‘tax saving’ is smaller than many directors expect.
Income and Expenses to Track
Track all business income — including cash payments — and all allowable expenses. Common deductible expenses include office costs, travel, equipment, professional services, marketing and a proportion of home bills if you work from home.
💰 Salary
- Pensionable income
- Reduces corporation tax
- NI applies (employer + employee)
- Guaranteed and regular
- Counts for state pension
📈 Dividends
- Paid from post-tax profits
- Lower personal tax rates
- No NI on dividends
- Only payable when profits exist
- £500 dividend allowance (2024/25)
Self Assessment Tax Return
Sole traders must complete an annual Self Assessment tax return by 31 January (online) for the previous tax year. You’ll pay income tax and Class 4 National Insurance on your profits, plus Class 2 NI if your profits exceed the Small Profits Threshold.
Should I Use Accounting Software?
Yes — even as a sole trader, cloud accounting software like Xero or QuickBooks simplifies record-keeping, produces profit and loss reports and makes self assessment much easier. Many sole traders also find that working with a bookkeeper saves significant time and money.
Common Mistakes Sole Traders Make
The most common mistakes include not separating personal and business finances, losing receipts, not budgeting for tax bills and missing the self assessment deadline. A professional bookkeeper helps you avoid all of these.
Frequently Asked Questions
Do I need to register for VAT as a sole trader?
Only if your taxable turnover exceeds £90,000 in 12 months. Below this, registration is optional — though sometimes beneficial.
When is the self assessment deadline?
The online self assessment deadline is 31 January. Paper returns must be submitted by 31 October. The tax payment deadline is also 31 January.
Can a bookkeeper do my self assessment?
Yes — a qualified bookkeeper can prepare and file your self assessment return, ensuring all allowable expenses are claimed and your return is accurate.
