What Documents Do Sole Traders Need for Self Assessment?

If you run your own business as a sole trader, you’ll usually need to complete a Self Assessment tax return each year. To do this accurately, it’s important to have the right documents and records ready. These show how much income you earned and what expenses you can claim.

Key Records to Keep and Use

HM Revenue and Customs (HMRC) requires you to keep sufficient evidence to complete your Self Assessment correctly. You do not need to send these documents with your tax return, but you must keep them in case HMRC asks to see them later.

• Business income records: This includes all sales invoices, receipts, or statements showing money you’ve received from customers or clients. For example, if you provide gardening services, keep invoices you sent and bank statements showing payments received.
• Business expenses receipts and invoices: Keep receipts for things like materials, equipment, business phone bills, or travel costs related to your work. These help reduce your taxable profit.
• Bank statements: Having a separate business bank account is helpful but not mandatory. Statements can support your income and expense claims.
• Details of any other income: If you have income outside your business, such as rental income or dividends, keep records of these as well.
• Records of any capital allowances: If you buy equipment or vehicles for the business, keep purchase invoices and details of any capital allowances claimed.

Examples of Useful Documents

• Sales invoices issued to customers
• Receipts for purchases like office supplies or tools
• Bank statements showing business transactions
• Mileage logs if claiming vehicle expenses
• Contracts or agreements relevant to your trade

Registering and Filing Your Return

If you’ve never sent a Self Assessment tax return before, you must register with HMRC by 5 October following the end of the tax year you need to report on. For example, for the tax year ending 5 April 2024, registration is required by 5 October 2024.

Once registered, you can file your return online or by paper. The return asks for details of your income and expenses, so having your records organised makes this process much easier and more accurate.

Important Notes

• Keeping records is a legal requirement; you should keep them for at least 5 years after the 31 January submission deadline of the relevant tax year.
• You do not send your receipts or invoices with the tax return itself, but you must keep them in case HMRC requests evidence.
• If you use simplified expenses or flat rates for certain costs, you still need records to show your eligibility.
• Even if your business income is low, you may still need to report it. The trading allowance lets you earn up to £1,000 tax-free from self-employment or property income. If your allowable expenses are less than £1,000, claiming the trading allowance may be simpler. If your expenses are more than £1,000, it may be more beneficial to deduct your actual expenses instead of using the allowance. Check the official guidance to see which option suits your circumstances.

In summary, sole traders need accurate records of all business income and allowable expenses to complete their Self Assessment tax return properly. Organising these documents throughout the year will help avoid mistakes and potential penalties.

Official reference: https://www.gov.uk/self-assessment-tax-returns. Always check the latest official guidance. Related forms: Browse our form category.

Important: This article provides general information. Government rules, forms and procedures can change, and this article may not reflect the latest updates. Check current GOV.UK guidance or the relevant authority before relying on it. ITG & Co. is independent and is not affiliated with a government department.