For the purposes of the formula component Implicit interest rate in subsection 159GQB(1), the rate of interest for a fixed return security in relation to a taxpayer is the rate of compound interest per period of 6 months at which:
(a) the sum of the present values of all amounts payable under the security during the taxpayer's maximum term;
equals:
(b) the issue price or the transfer price, as the case requires, of the security.