Except as provided in § 9–305 of this title, the Mayor and City Council of Baltimore City or the governing body of a county or of a municipal corporation may grant, by law, a tax credit against the county or municipal corporation property tax imposed on real property that is owned by and used as the principal residence of an individual who is at least 65 years old and of limited income. The Mayor and City Council of Baltimore City or the governing body of a county or municipal corporation may provide, by law, for: the amount and duration of the property tax credit under this section; additional eligibility criteria for the tax credit under this section; regulations and procedures for the application and uniform processing of requests for the tax credit; and any other provision necessary to carry out this section.