Sec 43-1231. Taxation of unrelated business income

Any organization, trust or church or a convention or association of churches which is exempt, except as provided in this section, from taxation under this title by reason of section 43-1201, paragraphs 1 through 14 shall be subject to the tax imposed under section 43-1111 upon its "unrelated business taxable income" as defined in section 512 of the internal revenue code. Such taxes shall also apply to an organization described in section 43-1201, paragraph 8 if the income is payable to an organization which itself is subject to the tax imposed under this section or to a church or to a convention or association of churches.