(a) Before beginning the duties of the office, the county judge must execute a bond that:
(1) is payable to the treasurer of the county;
(2) is in the amount set by the commissioners court of:
(A) subject to Paragraph (B), not less than $1,000 nor more than $10,000; or
(B) for a county judge presiding in the county court over guardianship proceedings, as defined by § 1002.015, Estates Code, or over probate proceedings, as defined by § 22.029, Estates Code, not less than:
(i) $100,000 for a court in a county with a population of 125,000 or less; or
(ii) $250,000 for a court in a county with a population of more than 125,000; and
(3) is conditioned that the judge will:
(A) faithfully perform all duties of office; and
(B) for a county judge presiding in the county court over guardianship or probate proceedings, perform the duties required by the Estates Code.
(b) The bond executed as required by Subsection (a) must be approved by the commissioners court.

(c) In lieu of the bond required by Subsection (a)(2)(B), a county may elect to obtain insurance against losses caused by the gross negligence of a county judge in performing the duties of office. The commissioners court of a county shall pay the premium for the insurance out of the general funds of the county.