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Questions about business rates

What business rates are, how they are calculated and what to do if you think you have overpaid.

Change of circumstances

It is important that you advise us of any changes in your circumstances that affect your business rates (NNDR) liability. The following are examples of changes of circumstances that would affect your liability:

  • if you move address
  • if you believe that you are entitled to a NNDR allowance (e.g. mandatory/discretionary relief)
  • if you believe that you are no longer entitled to a NNDR allowance
  • if the valuation officer amends your rateable value
  • if your property changes from empty to occupied (or vice versa)

We will re-calculate your liability and re-issue you with an amended bill. If the change of circumstance results in your NNDR liability being overpaid, we will issue you with a credit bill and a refund request form.

If you are moving to an address outside or within Westminster complete the online moving out form.

If you vacate your property it is important that you provide us with a forwarding address, so we can forward your credit bill and refund request form to the correct address.

To notify us of your change of circumstances or if you believe that you may be entitled to a refund, please email us: [email protected] or write to us at: NNDR, PO Box 187, Erith, DA8 9EY.

Published: 12 January 2021

Last updated: 17 January 2021