# The Non-Domestic Rating (Designated Areas) Regulations 2025, Paragraph 5: Standard business rate baseline: non-revaluation year


(1) If a specified year is not a revaluation year, a billing authority’s standard business rate baseline amount in respect of a designated area for the specified year is the amount calculated under sub-paragraph (2) or (3).
(2) For the specified year beginning with 1st April 2025, a billing authority’s standard business rates baseline amount is calculated in accordance with the formula—
N × P 2 P 1
(3) For a subsequent specified year that is not a revaluation year, the standard business rate baseline amount is calculated in accordance with the formula—
Q × P 2 P 1

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Source: https://www.legislation.gov.uk/uksi/2025/180/schedule/2/paragraph/5 (the official version)
Page: https://openlegislation.uk/non-domestic-rating-designated-areas-regulations-2025/schedule-2/paragraph-5
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.