(a) Notwithstanding the provisions of the general statutes, for the purposes of title 12 or any successor provisions to said title 12, the income of exempt companies is exempt from the corporation business tax and income to non-United-States persons shall not be deemed to be income derived from or connected with sources within this state to such persons for purposes of the income tax.
(b) Notwithstanding the provisions of the general statutes, exempt insurance companies shall not be subject to any tax imposed on premiums.
(c) Notwithstanding the provisions of the general statutes, exempt companies shall not be subject to the sales and use taxes imposed on the purchase of goods and services. To the extent that exempt companies make sales of goods and services to non-United-States persons the sales and use taxes shall be applicable to such transactions.