(b) The “eligible gross income” is the gross income derived by an international banking facility from:
1. Making, arranging for, placing, or servicing loans to foreign persons, provided, however, that in the case of a foreign person which is an individual, a foreign branch of a domestic corporation (other than a bank or savings association), or a foreign corporation or a foreign partnership which is 80 percent or more owned or controlled, either directly or indirectly, by one or more domestic corporations (other than banks or savings associations), domestic partnerships, or resident individuals, substantially all the proceeds of the loan are for use outside the United States;
2. Making or placing deposits with foreign persons which are banks or savings associations or foreign branches of banks or savings associations, including foreign subsidiaries or foreign branches of the taxpayer, or with other international banking facilities; or
3. Entering into foreign exchange trading or hedging transactions in connection with the activities described in this paragraph.
However, the term “eligible gross income” does not include any amount derived by an international banking facility from making, arranging for, placing, or servicing loans or making or placing deposits if the loans or deposits of funds are secured by mortgages, deeds of trust, or other liens upon real property located in this state.