Underpayment of Sales and use tax

While filing in march for Feb 2016 sales and use tax, the balance sheet for 2015 was used instead of the 2016. This caused an underpayment of the sales and use tax. Also and over payment of the battery tax occurred due to this error. As March was quarter end and we are now in apr what would be the best way to record this so as to make sure the balance sheet taxes recorded isn't over stated in apr when we go to record apr sales and use taxes?Thanks!