The penalty for underpayment of any installment of estimated tax imposed under section 422.88 shall not be imposed if the total amount of all payments of estimated tax made on or before the last date prescribed for the payment of such installment equals or exceeds the amount which would have been required to be paid on or before such date if the estimated tax amounts at least to one of the following:
Iowa Code § 422.89
95 Acts, ch 83, §12, 36; 2011 Acts, ch 25, §143; 2012 Acts, ch 1110, §15, 17; 2021 Acts, ch 80, § 265