|   | | 
 | Sec. 14.  36 MRSA §1952, as amended by PL 1981, c. 364, §27, is further  |  | amended to read: |  
  |  
 
 
 
 
 |   |  | The taxes imposed by chapters 211 to 225 shall be on sales of  |  | tangible personal property and taxable services are due and  |  payable at the time of the sale; or, in the case of tax on rental  |  for living quarters or rental of automobiles rented on a short- |  term basis, at the time the rental is payable. Upon such terms  |  and conditions as the State Tax Assessor may prescribe, he the  |  | assessor may permit a postponement of payment to a date not later  |  than the date when on which the sales so taxed are required to be  |  reported. For cause, the State Tax Assessor may abate all or any  |  part of the taxes. |  
  |  
 
 
 |   |  | Sec. 15.  36 MRSA §2902, sub-§4, as enacted by PL 1967, c. 94, §4, is  |  | repealed. |  
  |  
 
 
 |   |  | Sec. 16.  36 MRSA §2909, as amended by PL 1965, c. 479, §1, is  |  | repealed and the following enacted in it place: |  
  |  
 
 
 |   | | §2909. Refund of entire tax paid by certain common carriers |  
  |  
 
 
 |   |  | A person engaged in furnishing common carrier passenger  |  | service under an operating authority license issued pursuant to  |  | Title 29-A, section 552 is entitled to reimbursement of the tax  |  | paid on internal combustion engine fuel used by that person in  |  | locally encouraged vehicles.__For purposes of calculating  |  | reimbursement due pursuant to this section, internal combustion  |  | engine fuel used in a person's locally encouraged vehicles is  |  | presumed to bear the same proportional relationship to internal  |  | combustion engine fuel used in all of the person's passenger  |  | vehicles that the person's commutation__fare revenue derived from  |  | service provided by locally encouraged vehicles bears to the  |  | person's total passenger fare revenue.__"Commutation fare  |  | revenue" means revenue attributable to fares of 60__or less and  |  | fares paid for commutation or season tickets for single trips of  |  | less than 30 miles or for commutation tickets for one month or  |  | less. "Total passenger fare revenue" means all revenue  |  | attributable to the claimant's passenger operations.__"Locally  |  | encouraged vehicles" means buses upon which no excise tax is  |  | collected under section 1483, subsection 13. |  
  |  
 
 
 |   |  | Applications for refunds must be filed with the State Tax  |  | Assessor, on a form prescribed by the assessor and accompanied by  |  | the original invoices showing those purchases, within 9 months  |  | from the date of purchase.__A refund may not be issued under this  |  | section unless the claimant's commutation fare revenue derived  |  
  |  
 
  |