Council Tax system upgrade

We have completed the Council Tax system upgrade but there may still be some delays whilst we process our backlog of requests. Find out about the upgrade and what may have changed for you.

How to find your Council Tax account number and online key

Account number

You can find your account number:

  • on your paper bill
  • on any other letters we send to you about your account (reminder notices or final notices)
  • on your bank statement or online banking, if you pay by Direct Debit or standing order
  • by signing in to your existing online Council Tax account

If you live in the Chiltern or South Bucks areas your account number will have recently changed. You will need to refer to the letter issued in September 2022 for your new account number.

Online key

Your online key is needed to register for an online Council Tax account for the first time.

The online key can be found on the latest bill or recovery notice that we have sent you.

You must look at the latest notice or bill issued as the key will change for security reasons until you have created an online account.

The key is case sensitive so must be entered exactly as shown.

Example: Council Tax bill

An example of where you can find your account number and online key on your Council Tax bill.

You can find your Council Tax account number and online key on any correspondence we send you.

The account number is 8 or 10 digits long and is shown at the top of your annual bill.

The online key is 10 letters long and is shown at the top right of your bill.