Conn. Gen. Stat. § 45a-110: Persons responsible for payment of fees and expenses.

(a) With respect to a decedent's estate, the fees and expenses under sections 45a-107 and 45a-109 shall be paid for by the executor or administrator, except that if there is no such fiduciary, the fees and expenses shall be paid by the person filing the succession tax return under section 12-359 or the estate tax return under section 12-392.

(b) In the case of any proceeding commenced on motion of the court, the court may assess the fees and expenses provided for under sections 45a-106a, 45a-107 and 45a-109 against one or more parties in such proportion as the court determines equitable. No fee shall be charged under this subsection for a hearing on the court's own motion to remove a fiduciary for failure to file required documents.

(c) Except as provided in subsection (a) of this section, the person filing the motion, petition, application or account shall pay the fees and expenses provided for by sections 45a-106a, 45a-108a and 45a-109, unless otherwise provided by law. The court may order the fiduciary of an estate to reimburse a party for any such fees and expenses if the court determines that reimbursement is equitable.