Section 13. Exemption of property for economic development purposes; procedure; limitations

(a) The board of county commissioners of any county or the governing body of any city may, by resolution or ordinance, as the case requires, exempt from all ad valorem taxation all or any portion of the appraised valuation of: (1) All buildings, together with the land upon which such buildings are located, and all tangible personal property associated therewith used exclusively by a business for the purpose of: (A) Manufacturing articles of commerce; (B) conducting research and development; or (C) storing goods or commodities which are sold or traded in interstate commerce, which commences operations after the date on which this amendment is approved by the electors of this state; or (2) all buildings, or added improvements to buildings constructed after the date on which this amendment is approved by the electors of this state, together with the land upon which such buildings or added improvements are located, and all tangible personal property purchased after such date and associated therewith, used exclusively for the purpose of: (A) Manufacturing articles of commerce; (B) conducting research and development; or (C) storing goods or commodities which are sold or traded in interstate commerce, which is necessary to facilitate the expansion of any such existing business if, as a result of such expansion, new employment is created.
(b) Any ad valorem tax exemption granted pursuant to subsection (a) shall be in effect for not more than 10 calendar years after the calendar year in which the business commences its operations or the calendar year in which expansion of an existing business is completed, as the case requires.
(c) The legislature may limit or prohibit the application of this section by enactment uniformly applicable to all cities or counties.
(d) The provisions of this section shall not be construed to affect exemptions of property from ad valorem taxation granted by this constitution or by enactment of the legislature, or to affect the authority of the legislature to enact additional exemptions of property from ad valorem taxation found to have a public purpose and promote the general welfare.