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  • P11D and Possible Overpayment of Income Tax

    I left my previous employer on 30/9/2021, where I had been paying Company Car tax. When I started my new job on 6/12/2021 I didnt realise but my tax code remained the same. I only noticed after April 2022, so when I called HMRC they changed my code for this tax year. They also advised me to get a P11D so my tax from Dec 21 - Mar 22 could be sorted. I have this now but due to my working hours am unable to call the helpline to get this resolved. Is there any other way I can contact them to sort this out, can I post a copy of the doc with a letter? Is there an online option?