Council Tax - change of circumstances Let us know here of any change in your circumstances that could affect your entitlement to Council Tax reduction. Either: select 'Begin this form' (below). You don't need to sign in, as long as you complete each page in less than 10 minutes. or register and sign in with myaccount. If you are signed in, the form will save and you can finish it later. Your contact details will be already filled in.