S.C. Code § 38-63-630
This section, in addition to all other applicable sections of this article, applies to all policies issued on or after January 1, 1986. Any cash surrender value available under the policy in the event of default in a premium payment due on any policy anniversary must be in an amount which does not differ by more than two-tenths of one percent of either the amount of insurance, if the insurance is uniform in amount, or the average amount of insurance at the beginning of each of the first ten policy years, from the sum of (a) the greater of zero and the basic cash value hereinafter specified and (b) the present value of any existing paid-up additions less the amount of any indebtedness to the company under the policy.
The basic cash value must be equal to the present value, on such anniversary, of the future guaranteed benefits which would have been provided for by the policy, excluding any existing paid-up additions and before deduction of any indebtedness to the company, if there had been no default, less the then present value of the nonforfeiture factors, as hereinafter defined, corresponding to premiums which would have fallen due on and after the anniversary. The effects on the basic cash value of supplemental life insurance or annuity benefits or of family coverage, as described in Section 38-63-530 or 38-63-570, whichever is applicable, must be the same as are the effects specified in Section 38-63-530 or 38-63-570, whichever is applicable, on the cash surrender values defined in that section.
The nonforfeiture factor for each policy year must be an amount equal to a percentage of the adjusted premium for the policy year, as defined in Section 38-63-570 or 38-63-600, whichever is applicable. Except as is required by the next succeeding sentence of this paragraph, the percentage:
No basic cash value may be less than the value which would be obtained if the adjusted premiums for the policy, as defined in Section 38-63-570 or 38-63-600, whichever is applicable, were substituted for the nonforfeiture factors in the calculation of the basic cash value.
All adjusted premiums and present values referred to in this section must for a particular policy be calculated on the same mortality and interest bases as are used in demonstrating the policy's compliance with the other sections of this article. The cash surrender values referred to in this section include any endowment benefits provided for by the policy.
Any cash surrender value available other than in the event of default in a premium payment due on a policy anniversary and the amount of any paid-up nonforfeiture benefit available under the policy in the event of default in a premium payment must be determined in ways consistent with the ways specified for determining the analogous minimum amounts in Sections 38-63-520 to 38-63-540, 38-63-600, and 38-63-620. The amounts of any cash surrender values and of any paid-up nonforfeiture benefits granted in connection with additional benefits such as those listed as items (a) through (f) of subsection (8) of Section 38-63-600 shall conform with the principles of this section.
S.C. Code § 38-63-630