(a) The System institution's permanent capital ratio is determined on the basis of the financial statements of the System institution prepared in accordance with generally accepted accounting principles.

(b) The System institution's asset base and permanent capital are computed using average daily balances for the most recent 3 months.

(c) The System institution's permanent capital ratio is calculated by dividing the System institution's permanent capital, adjusted in accordance with § 615.5207 (the numerator), by the risk-adjusted asset base (the denominator) as defined in § 615.5201, to derive a ratio expressed as a percentage.