Self Assessment Tax Return 2025 2025 Online. Self assessment is a system hm revenue and customs (hmrc) uses to collect income tax. You can contact us after the 6th of april 2025 to register for self assessment for 2025/25 onwards.
You can contact us after the 6th of april 2025 to register for self assessment for 2025/25 onwards. The 2023 to 2025 tax year deadline is january 31, 2025 (image: