Don R

I need to send a letter to the SA office, to make an amendment to previous years returns and reclaim higher rate pension contributions for the last three/four years. Can I ask, 1. I believe I can claim back on the tax years, 2019-2020, 2020-2021, 2021-2022 ?? (is this right?). 2. Can I claim 2017-2018 and 2018-2019 tax years also? 3. Does my letter only need to arrive by the 5th April 2024 at the SA office. Are letters effectively date stamped - when they are received. Or does the letter/claims need to be processed by the SA office before the 5th April 2024 ?? The reason I ask, is that I checked the progress of the SA dept. online, which stated that the SA dept. are currently processing matters which arrived in mid-November 2023.