67.525.  Deposit — distribution to county, when — refunds authorized — tax abolished, effect. — 1.  All county sales taxes collected by the director of revenue under sections 67.500 to 67.545 on behalf of any county, less one percent for cost of collection, which shall be deposited in the state's general revenue fund after payment of premiums for surety bonds as provided in section 32.087, shall be deposited with the state treasurer in a county sales tax trust fund, which fund shall be separate and apart from the county sales tax trust fund established by section 66.620.  The moneys in such county sales tax trust fund shall not be deemed to be state funds and shall not be commingled with any funds of the state.  The director of revenue shall keep accurate records of the amount of money in the trust fund which was collected in each county imposing a county sales tax, and the records shall be open to the inspection of officers of the county and to the public.  Not later than the tenth day of each month the director of revenue shall distribute all moneys deposited in the trust fund during the preceding month by distributing to the county treasurer, or such other officer as may be designated by the county ordinance or order, of each county imposing the tax authorized by sections 67.500 to 67.545, the sum due the county as certified by the director of revenue.

  2.  The director of revenue may authorize the state treasurer to make refunds from the amounts in the trust fund and credited to any county for erroneous payments and overpayments made, and may redeem dishonored checks and drafts deposited to the credit of such counties.  If any county abolishes the tax, the county shall notify the director of revenue of the action at least ninety days prior to the effective date of the repeal, and the director of revenue may order retention in the trust fund, for a period of one year, of two percent of the amount collected after receipt of such notice to cover possible refunds or overpayment of the tax and to redeem dishonored checks and drafts deposited to the credit of such accounts.  After one year has elapsed after the effective date of abolition of the tax in such county, the director of revenue shall authorize the state treasurer to remit the balance in the account to the county and close the account of that county.  The director of revenue shall notify each county of each instance of any amount refunded or any check redeemed from receipts due the county.

  3.  Except as modified in sections 67.500 to 67.545, all provisions of sections 32.085 and 32.087 shall apply to the tax imposed under sections 67.500 to 67.545.