S.C. Code Ann. § 12-6-3515
(B)
(1) For purposes of this section:
(2) Notwithstanding the provisions of Internal Revenue Code Section 170(h) and applicable regulations pertaining to forestry and silvaculture practices, a taxpayer is not disqualified for the tax credit allowed in this section because of silvacultural and forestry practices permitted by or undertaken pursuant to a conservation contribution on a real property interest if:
(c) the taxpayer provides the Department of Revenue with the information the department considers necessary to determine that the taxpayer would otherwise be eligible for the deduction allowed under Section 170(h).
The amount of the credit allowable under this item is equal to twenty-five percent of the deduction that would otherwise be allowable under Section 170(h) but for the silvacultural and forestry activities performed on the real property interest, subject to the same conditions and limitations as the credit allowed by this section.
(C)