When do I make Self Assessment payments and file my tax 2026

1. Click ‘Get Form’ to open it in the editor.
2. Begin by entering your name and Unique Taxpayer Reference (UTR) in the designated fields. Ensure accuracy as these are crucial for identification.
3. Fill in your business details, including the business name, description, and address. If there have been any changes in the last year, mark the box provided.
4. Input your accounting dates accurately. This includes the start date of your books and the end date of your accounting period.
5. Complete the income section by entering your turnover and any other business income. Be sure to include any COVID support payments if applicable.
6. In the expenses section, list all relevant costs associated with running your business. Remember to differentiate between allowable and disallowable expenses.
7. Calculate your net profit or loss based on the figures entered. Follow instructions for capital allowances if applicable.

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