Thanks for your prompt reply, I didn't expect you to look at this until tomorrow! I am having a lovely weekend too thanks, ***** ***** goes so quick!
That's great, thanks for confirming and advising on the wording, I think writing letters to the HMRC can seem a daunting task as although it is just a letter, we are worried about saying the wrong thing and causing unnecessary complications! I will pass this on to her.
She submitted paper returns and will be submitting paper returns for 14/15 and 15/16. Does that mean she can only amend the returns via this letter if she didn't complete online returns anyway? Would she also have to tick the box in the 14/15 return that she thinks she has paid too much tax and put details in that too?
Referring to your advice about sending in the 15/16 Return at the same time to deal with everything in one go, would she need to request HMRC to send the paper form for 15/16 as this has not been sent out yet?
Finally, will the overpaid tax be sent back as a cheque payment to my mother-in-law? I'm not sure on the process of probate but wondered if there would be issues paying the cheque into the account if it is frozen. My sister in law is the executor and is in the process of applying for probate. I am aware however that this may not be your area of expertise so may need further investigating.
Thanks again for all your help.