Sec. 10. 36 MRSA §2873, sub-§3, as enacted by PL 2001, c. 714, Pt. CC, §3 and affected by §8, is amended to read:

3. Audit period to remain open; accrual of penalties and interest. Notwithstanding any other provision of law, the tax imposed against a person by section 2872 for any fiscal year remains open to audit and further assessment by the assessor until the person's taxable revenues for that fiscal year have been finally determined. Any underestimates of tax liability reported and paid pursuant to subsection 1 are subject to an assessment of interest at the rate provided in section 186 from the date or dates of underpayment until payment is made, unless the estimated tax liability was calculated by applying the tax rates provided by section 2872 to the most recent fiscal year for which relevant taxable revenues have been finally determined in compliance with the standards adopted by the assessor pursuant to subsection 1, in which case no interest may accrue prior to the date on which the reconciliation return for the year is due. Any amount of tax that is reported on a reconciliation return required by subsection 2 but not paid at the time the reconciliation return is filed is subject to the accrual of interest as provided by section 186, as well as to any applicable