(b) Effective for taxable years beginning on and after the first day of January, two thousand one, credits granted to an electing small business corporation (S corporation), limited partnership, general partnership, limited liability company or multiple owners of property shall be passed through to the shareholders, partners, members or owners, either pro rata or pursuant to an agreement among the shareholders, partners, members or owners documenting an alternative distribution method. The tax commissioner shall promulgate procedural rules in accordance with article three, chapter twenty-nine-a of this code that provide the method of reporting the alternative method of distribution authorized by this section.