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a black table top with a drawing board, on the board the words 'CAPITAL ALLOWANCE' are written in red pen. Next to this is a USB stick, a plant, some glasses, and a jar of coins
Updated on 6 April 2026

Business expenses: capital and capital allowances

On this page, we explain what capital allowances are for the self-employed and how to claim them. Remember that if you use the cash basis of accounting, which is the default method for preparing accounts from the 2024/25 tax year onwards, you cannot claim capital allowances except on the purchase ...

A person sat at a desk, adding up receipts on a calculator.
Updated on 6 April 2026

Pre-trading expenses

On this page, we discuss expenses you might incur before you start trading and how you can claim tax relief for them.

a desk with a pad of writing paper, written on the paper are the words ' ALLOWABLE BUSINESS EXPENSES'
Updated on 6 April 2026

Business expenses: allowable for tax

When you are self-employed, you will usually have to pay expenses that relate to your business. On this page, we discuss which business expenses are allowable for tax purposes. When we say business expenses are ‘allowable’ this means that the tax rules allow the particular expense to be deducted ...

Wooden blocks spelling out the word 'INCOME' against a blue background, white arrows are pointing towards the word.
Updated on 6 April 2026

Trading income: basis period reform

Basis period reform only affects some self-employed individuals and partners in partnerships. If you are affected, the way you report your profits for tax purposes changed from the 2023/24 tax year onwards. This page explains what basis periods are, the changes made under basis period reform, who ...

2 wooden blocks with words written on them, one saying 'CASH' and the other 'BASIS' against a blue background.
Updated on 6 April 2026

Accounts: cash basis

Sole traders and partnerships must prepare business accounts to show the income and expenses of the business for the period covered by the accounts. There are two ways to prepare business accounts- the cash basis which is designed to be a simpler way of preparing accounts, or traditional accounting ...

A pad of white paper with the words 'ACCRUAL-BASED ACCOUNTING' around the pad of paper various stationary can be seen.
Updated on 6 April 2026

Accounts: traditional accounting (accruals basis)

Sole traders and partnerships must prepare business accounts to complete their self assessment tax returns or, from 2026/27 onwards, end of year returns under Making Tax Digital for income tax. Accounts show income and expenses of the business for the accounting period and can be prepared by using ...

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