Form sa370 2026

1. Click ‘Get Form’ to open the SA370 in the editor.
2. Begin by entering the tax year for which you are appealing penalties. This is crucial for identifying your case.
3. In the section labeled 'The penalty (or penalties) you want to appeal against', list each penalty amount and the corresponding date from your penalty notice. Ensure accuracy to avoid delays.
4. For each late filing or payment penalty, mark an 'X' in the appropriate box if you wish to appeal. Include all relevant amounts and dates as specified.
5. Provide a detailed explanation of your reason for appeal in the designated space. Include any evidence that supports your claim, as this can strengthen your case.
6. Complete your personal information, including full name, tax reference, address, and National Insurance number if known.
7. Finally, sign and date your appeal before sending it to the HMRC office indicated on your penalty notice.

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