Time to Pay Arrangement problem

I'm eligible to set up a time to pay arrangement online for my SA tax bill, however when I try to do this I get the message "you already have a Payment Plan with HMRC". I had one last year but this closed off some time ago with all payments made on time. I have called the general helpdesk number, the number for setting up payment arrangements, and the technical helpdesk number but nobody knows how to resolve this. I set up my payment plan last year before it became due so I don't think I'm too early, either. Any help much appreciated!

I have been experiencing the same issue. I've been trying to resolve it since July, as I closed my Payment Plan in January 2024. I have already spoken with three different helplines, and I consistently receive the same response: the Payment Plan is closed, it should be fine, and if I need assistance, they can set up a new plan over the phone. Any luck with it?

Hi RobbieD,
If you cannot set up a payment plan online, you can contact our Self Assessment team so we can arrange a plan with you directly.
Self Assessment: general enquiries
Thank you.