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  • Forgot to includes mortgage interest expenses on self assessment form

    Having submitted my self assessment form for the past 2 years which included income and expenses from property letting, it has just come to my notice that I have not included my mortgage interest payments, as expenses, and I need to rectify this. (Reason is that I was aware that a few years ago the rules changed such that landlords could no longer deduct mortgage costs from their rental income; however I had not realised that I was, and am, still eligible for basic rate tax relief on these payments.) Please could you advise how I should get these figures retrospectively altered on my last two self-assessment forms?