Investment expenses paid or accrued during the taxable year. If any general expenses are in part assigned to or included in the investment expenses, the total deduction under this paragraph shall not exceed one-fourth of 1 percent of the mean of the book value of the invested assets held at the beginning and end of the taxable year plus one-fourth of the amount by which taxable investment income (computed without any deduction for investment expenses allowed by this paragraph, for tax-free interest allowed by paragraph (1), or for dividends received allowed by paragraph (7)), exceeds 3¾ percent of the book value of the mean of the invested assets held at the beginning and end of the taxable year.
Taxes (as provided in section 164), and other expenses, paid or accrued during the taxable year exclusively on or with respect to the real estate owned by the company. No deduction shall be allowed under this paragraph for any amount paid out for new buildings, or for permanent improvements or betterments made to increase the value of any property.
The special deductions allowed by part VIII (except section 248) of subchapter B (sec. 241 and following, relating to dividends received). In applying section 246(b) (relating to limitation on aggregate amount of deductions for dividends received) for purposes of this paragraph, the reference in such section to “taxable income” shall be treated as a reference to “taxable investment income”.
The deduction under subsection (c)(3) or (4) on account of any real estate owned and occupied in whole or in part by a mutual insurance company subject to the tax imposed by section 831 shall be limited to an amount which bears the same ratio to such deduction (computed without regard to this paragraph) as the rental value of the space not so occupied bears to the rental value of the entire property.
The term “net premiums” means gross premiums (including deposits and assessments) written or received on insurance contracts during the taxable year less return premiums and premiums paid or incurred for reinsurance. Amounts returned where the amount is not fixed in the insurance contract but depends on the experience of the company or the discretion of the management shall not be included in return premiums but shall be treated as dividends to policyholders under paragraph (2).