If the principal sum held by any fiduciary mentioned in § 64.2-1206 does not exceed $35,000, the fiduciary shall exhibit his accounts before the commissioner of accounts within the appropriate time period provided in §§ 64.2-1305, 64.2-1306, and 64.2-1307. Thereafter, the commissioner of accounts may permit the fiduciary to exhibit his accounts every three years, which permission may be revoked by the commissioner of accounts on his own motion or upon request of any interested person. The provisions of this section shall apply to any case in which the corpus of the estate in the hands of the fiduciary has been reduced to $35,000 or less although it formerly exceeded that amount. Any fiduciary exhibiting his accounts in accordance with the provisions of this section shall be entitled to compensation for his services.