Title[ Part 2: The First Pillar - Minimum Capital Requirements
Section[ 1. The Basic Indicator Approach
649. Banks using the Basic Indicator Approach must hold capital for operational risk equal to the average over the previous three years of a fixed percentage (denoted alpha) of positive annual gross income. Figures for any year in which annual gross income is negative or zero should be excluded from both the numerator and denominator when calculating the average. 99 The charge may be expressed as follows:

where:
KBIA = the capital charge under the Basic Indicator Approach
GI = annual gross income, where positive, over the previous three years
N = number of the previous three years for which gross income is positive
? = 15%, which is set by the Committee, relating the industry wide level of required capital to the industry wide level of the indicator.
650. Gross income is defined as net interest income plus net non-interest income. 100 It is intended that this measure should: (i) be gross of any provisions (e.g. for unpaid interest);
(ii) be gross of operating expenses, including fees paid to outsourcing service providers; 101
(iii) exclude realised profits/losses from the sale of securities in the banking book; 102 and
(iv) exclude extraordinary or irregular items as well as income derived from insurance.
651. As a point of entry for capital calculation, no specific criteria for use of the Basic Indicator Approach are set out in this Framework. Nevertheless, banks using this approach are encouraged to comply with the Committee’s guidance on Sound Practices for the Management and Supervision of Operational Risk, February 2003.