Each operator shall, on or before the last working day of the month following the close of each calendar month, file a return with the tax administrator on the forms provided by him or her, of the total rents charged or chargeable as provided in Section 3.24.030 of this chapter, whether or not received, including any rentals charged for occupancies exempt under the provisions of Sections 3.24.020 and 3.24.040 of this chapter and the amount of tax collected for transient occupancies. Each such return shall contain a declaration under penalty of perjury, executed by the operator or his or her authorized agent, that to the best of the signatories knowledge, the statements in the return are true, correct and complete. Amounts claimed on the return as exempt from the tax pursuant to Sections 3.24.020, 3.24.040 and 3.24.150 of this chapter shall be fully itemized and explained on the return or supporting schedule. In determining the amount of "taxable receipts" on the tax return, "rent" as defined in Section 3.24.020, may not be reduced by any business expenses including but not limited to the amount of service charges deducted by credit card companies or commissions paid to travel agencies. At the time the return is filed, the tax fixed at the prevailing transient occupancy tax rate for the amount of rentals charged or chargeable, which are not exempt from tax under Sections 3.24.020, 3.24.040 and 3.24.150 shall be remitted to the tax administrator. The tax administrator may establish other reporting periods and may require a cash deposit or bond or a separate trust fund bank account for any permit holder if he or she deems it necessary in order to insure collection of the tax and he or she may require further information in the return. All taxes collected by operators pursuant to this chapter shall be held in trust for the account of the city until remittance thereof is made to the tax administrator. (Ord. 3 § 1 (part), 1991: prior code § 3.24.080)