glossymanatee

Hi, I thought I'd add my experience of using the RTT service and hopefully it might help someone. I submitted it in June and realized I needed to amend it as I'm actually overpaying from my calculations. It showed as 'Received'. Just like others, I tried to find my RTT number thinking I could just log in and attached the amendment as a note or something. Rang several times and no-one had a clue. Must have spent 5 hrs on the phone in total. Here's the thing: You do not get an RTT number until it is marked as 'Completed' by HMRC. In my case, this took 4 months. Even now, it's not simple. You have to go through the whole process again (now able to attach an RTT number), but then what? Another 4 months of waiting? Also there's the weird potential quirk of HMRC thinking it's another submission so you're paranoid you'll have to pay twice. Such a terrible experience, especially if you're new to online tax. Good luck out there.