Each tax imposed by the provisions of this chapter, which is not paid to the Commissioner of Revenue Services within six months after the date of the death of the transferor or within six months of any moneys received as a result of a settlement, award or judgment from any action pending on the date of the death of the transferor, shall bear interest at the rate of one per cent per month or fraction thereof, commencing at the expiration of such six months, until paid; but the Commissioner of Revenue Services may, for cause shown, on the written application of the fiduciary or transferee filed with said commissioner at or before the expiration of such six months, extend the time for the payment of such tax or any part thereof. Such application shall set forth the extension desired and the reasons therefor and a copy thereof shall be filed in the court of probate for the district within which the transferor resided at the date of his death or, if the transferor died a nonresident of this state, in the court of probate for the district within which the real estate or tangible personal property is situated. Unless, not later than sixty days after his receipt of such application, the commissioner files in the court of probate a copy of his order denying or modifying the extension requested, the extension requested shall be deemed granted. If the extension request is denied or modified, the fiduciary may not later than thirty days after the receipt of such order from the commissioner, file in such probate court an application for an extension of time to pay the tax setting forth the extension desired and the reasons therefor. The court of probate shall assign a time and place for a hearing upon such application not less than two nor more than four weeks after the filing thereof, and shall cause copies of such order for hearing to be sent to the commissioner and to the fiduciary or transferee at least ten days before such hearing. For cause shown, the court of probate may, after hearing on such application, extend the time for the payment of such tax or any part thereof for a period not to exceed thirty days after receipt by the fiduciary or transferee of a copy of the first computation of the succession tax from the Commissioner of Revenue Services. The commissioner or any other party in interest may appear before such court at such hearing and be heard concerning the requested extension. Such court, after such hearing, shall forthwith send to the commissioner and to the fiduciary or transferee a copy of any order relating to such application. Further extensions may be granted by the Commissioner of Revenue Services or the court if the foregoing provisions have been complied with and if written application for such further extensions is filed before the expiration of the preceding extension. If one or more extensions have been granted, the tax shall bear interest at the rate of one per cent per month or fraction thereof, commencing with the expiration of six months after the death of the transferor, until paid. Except as provided by the provisions of a will, such tax shall be paid from property passing to the donee, beneficiary or distributee unless such recipient pays to the fiduciary or transferee the amount thereof. Each donee, beneficiary or distributee of the same class shall pay such percentage of the tax on property passing to such class as his share is of such property. The tax to be allocated against a tenant for life or limited term or an annuitant or remainderman shall be such percentage of the whole tax on property passing to persons of the same class as the value of his interest as determined under the provisions of § 12-353 is of the net taxable estate passing to such class and shall be paid out of the principal fund in which any such temporary interest or remainder exists. Whenever there is an overpayment of the tax imposed by this chapter, exclusive of any such overpayment in relation to a computation of tax in accordance with subsection (b) of § 12-355, the Commissioner of Revenue Services shall return to the fiduciary or transferee the overpayment which shall bear interest at the rate of two-thirds of one per cent per month or fraction thereof, said interest commencing from the expiration of six months after the death of the transferor or date of payment, whichever is later.