A domestic mutual insurer formed after January 1, 1961, after being authorized to transact one kind of insurance shall be authorized by the Commissioner to transact such additional kinds of insurance as are permitted under Code Section 33-3-5, while otherwise in compliance with this title and while maintaining unimpaired surplus funds in an
amount not less than the amount of paid-in capital stock required of a domestic stock insurer transacting like kinds of insurance, subject further to the additional expendable surplus requirements of this title applicable to such a stock insurer.