# The Non-Domestic Rating (Rates Retention) Regulations 2013, Paragraph 1


A billing authority’s exceptional balance is calculated as follows—
where—
A is the billing authority’s estimated surplus (expressed as a positive amount) or deficit (expressed as a negative amount) for the preceding year, calculated in accordance with paragraph 1(1) of Schedule 4 as if the billing authority were not subject to paragraph 1B of Schedule 4;
B is the billing authority’s prior year balance, calculated in accordance with paragraph 2 of this Schedule;
C is the amount of relevant rates relief awarded by the billing authority in the preceding year in accordance with paragraph 3.

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Source: https://www.legislation.gov.uk/uksi/2013/452/schedule/4A/paragraph/1 (the official version)
Page: https://openlegislation.uk/non-domestic-rating-rates-retention-regulations-2013/schedule-4A/paragraph-1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.