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Estimated taxes are due quarterly on specific dates during the year. The IRS mandates that the normal due dates for estimated taxes are April 15 for the first quarter of a year, June 15 for the second quarter, Sept. 15 for the third quarter and Jan.15 of the following year for the fourth quarter. Related Reading: How to Print Quarterly Taxes in QuickBooks.
You can either pay all your estimated tax with this first payment or pay it in four equal installments due on: 1  1st payment: April 18, 2017. 2  2nd payment: June 15, 2017. 3  3rd payment: September 15, 2017.  4th payment: January 16, 2018.