Rachel Arnold

Can you answer the second part of the question? I didn’t put the interest in the previous tax years - 21-22 and 22-23. Can I put those years in box 45? Thanks

Do I just put in the mortgage interest or do I have to calculate the 20% myself, or does the self assessment system work it out? Also, I didn't realise I could do this before and didn't put in on my 21-22 and 22-23 tax returns. Can I put those amounts in box 45? Thank you