A. Each national banking association:

1. Shall be taxed on its net income under title 43.

2. Is subject to all other taxes that are authorized by 12 United States Code § 548 and that are levied or imposed by this state or any political subdivision of this state.

B. The allowable cost factor that is attributable to exempt income from United States government obligations and municipal bonds shall be determined pursuant to section 43-961, paragraph 2.