SA100HM Revenue & Customs
SA100 — Self Assessment Tax Return
The SA100 is the main Self Assessment tax return form used to report income and claim tax reliefs.
Official source recommended
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Open official source- Country
- United Kingdom
- Agency
- HM Revenue & Customs
- Archived on
- May 5, 2026
- File size
- 1.3 MB
SA100.pdf
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Official source: https://www.gov.uk/government/publications/complete-your-self-assessment-tax-return-for-5-april-2025-or-earlier