My husband died a couple of years ago and it has taken up until now to finalise affairs for various reasons.
I was putting together information for my accountant and then heard that the filing deadline had been extended until the end of February. All the information was collated and the tax return was filed on time according to the new deadline.
I received a letter from HMRC to let me know that I had to pay interest and it turns out that the payment deadline wasn't extended despite the filing deadline being moved.
I've just spoken to my accountant who told me that many of their clients were caught by this, some owing thousands in interest.
How on earth can someone, paying for the first time, be expected to know how much to pay if they haven't received the calculation from their accountant? And then be penalised because it was paid late despite thinking that it had been paid on time.