S.C. Code Ann. § 62-3-603
(A) Except as may be required pursuant to Section 62-3-605 or upon the appointment of a special administrator, a personal representative is not required to file a bond if:
(4) the personal representative is named in the will, unless the will expressly requires a bond.
If, pursuant to Section 62-3-203(a), the court appoints as personal representative a nominee of a personal representative named in a will, the court may in its discretion decide not to require bond.
(B) Where a bond is required of the personal representative or administrator of an estate by law or by the will, it may be waived under the following conditions:
(2) all known beneficiaries and other persons having an interest in the estate execute a written statement on a form prescribed by the court that they agree to the bond being waived. This form must be filed with the court simultaneously with the affidavit required by item (1) above. A creditor for purposes of this item (2) is not considered a person having an interest in the estate.
The provisions of this subsection (B) are supplemental and in addition to any other provisions of law permitting the waiving or reducing of a bond. Any bond required by Section 62-3-605 may not be waived under the provisions of this section.