The effective date is the date from which any adjustment of the rateable value applies, or comes into effect.

The rateable value of all business and non-domestic properties is assessed every five years in a revaluation. All the new values come into effect on the same date (1 April 2010 for the 2010 rating list). Your local council will calculate your bill from the effective date based on the rateable value.

If there are changes in the area or property that will alter the rateable value of the property then a new rateable value will be set. This new value will come into effect from the date of the changes and not the date the rateable value was adjusted. The local council will adjust your bill to account for the change in rateable value from this new effective date.