(1) Rental income from real and tangible property is business income if the property with respect to which the rental income was received is used in the taxpayer's trade or business or incidental thereto and therefore is includable in the property factor under ARM 42.26.231 and 42.26.237.

(2) Gain or loss from the sale, exchange, or other dispositions of real or tangible personal property constitutes business income if the property while owned by the taxpayer was used in the taxpayer's trade or business.   However, if such property was utilized for the production of non-business income or otherwise was removed from the property factor before its sale, exchange, or other disposition, the gain or loss will constitute non-business income.   See ARM 42.26.232.

(3) Interest income is business income where the intangible with respect to which the interest was received arises out of or was created in the regular course of the taxpayer's trade or business operations or where the purpose for acquiring and holding the intangible is related to or incidental to such trade or business operations.

(4) Dividends are business income where the stock with respect to which the dividends are received arises out of or was acquired in the regular course of the taxpayer's trade or business operations or where the purpose for acquiring and holding the stock is related to or incidental to such trade or business operations.

(5) Patent and copyright royalties are business income where the patent or copyright with respect to which the royalties were received arises out of or was created in the regular course of the taxpayer's trade or business operations or where the purpose for acquiring and holding the patent or copyright is related to or incidental to such trade or business operations.