N.Griffin

I have looked on the gateway website, in my own account, but cannot find a section to enter a correct estimate for savings interest for this tax year. The estimate based on last year is incorrect, resulting in a change to my tax code and I will pay too much tax. I would like to update HMRC with the accounts and correct amount, but there is no section on the website that allows me to enter this information. I would appreciate it if you could tell me exactly where I can find the section to update HMRC with the correct information. Many thanks.