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 property tax credit against the county or municipal corporation property tax imposed on rental dwellings of owners who provide reduced rents for any tenant who: is at least 65 years old; has been found permanently and totally disabled and has qualified for benefits under: the Social Security Act; the Railroad Retirement Act; any federal act for service members; or any federal retirement system; or has been found permanently and totally disabled by a county health officer or the Baltimore City Commissioner of Health. The county or municipal corporation may provide, by law, for: the specific requirements for eligibility for a tax credit authorized under this section; additional limitations on eligibility for the credit; the amount and duration of the credit; and any other provision appropriate to implement the credit.