S.C. Code § 12-37-252
2002 Act No. 297, Section 2, provides as follows:
"This act takes effect upon approval by the Governor and applies for property tax years beginning after 2000. The deadline for filing an application for the four percent assessment ratio and the homestead exemption, or both, and any claims for refund arising thereunder, for property tax year 2001 is extended through the sixtieth day following the approval of this act by the Governor."