3. Any special or general law to the contrary notwithstanding, no mutual benefit association or charitable association, registered under the provisions of sections 201 and following of the Act respecting insurance (chapter A-32), shall, as such, be subject to any license or business tax on the part of any municipality.
R. S. 1964, c. 174, s. 9; 1974, c. 70, s. 473.