S.C. Code Ann. § 12-6-1171 — Military retirement income deduction; definitions; surviving spouse

(A) An individual taxpayer may deduct all military retirement income that is included in South Carolina taxable income.
(B) The term "retirement income", as used in this section, means the total of all otherwise taxable income not subject to a penalty for premature distribution received by the taxpayer or the taxpayer's surviving spouse in a taxable year from a qualified military retirement plan. For purposes of a surviving spouse, "retirement income" also includes a retirement benefit plan and dependent indemnity compensation related to the deceased spouse's military service.
(C) A surviving spouse receiving military retirement income that is attributable to the deceased spouse shall apply this deduction in the same manner that the deduction applied to the deceased spouse. If the surviving spouse also has another retirement income, an additional retirement exclusion is allowed.
(D) The department may require the taxpayer to provide information necessary for proper administration of this subsection.