163.1. For the purposes of sections 160 and 163, an amount paid in the year by a taxpayer pursuant to a legal obligation to pay interest includes an amount paid by the taxpayer in the year, after 1980 and in respect of a period commencing after 1980, which is an interest, within the meaning of paragraph i of section 835, in respect of a policy loan, within the meaning that it would be given under paragraph h of the same section if that paragraph did not refer to an advance granted in accordance with the terms and conditions of an annuity contract granted by an insurer to the extent that the amount is verified by the insurer in prescribed form and within the prescribed time to be(a) such an interest paid in the year on the loan;
(b) such an interest that is not included in the computation of the adjusted cost basis, within the meaning of sections 976 and 976.1, to the taxpayer, of his interest in the policy; and
(c) an interest that is not paid on money borrowed before 1978 to acquire a life insurance policy, within the meaning of paragraph e of section 835, that is an annuity contract issued before 1978 under which pension payments are to begin not later than on the day the policyholder reaches 75 years of age or on an amount payable in respect of property acquired before 1978 which is an interest in such a contract.