2025 Quarterly Estimated Tax Due Dates 2025. If she decides to make “quarterly” tax payments instead of paying all her estimated tax by april. 2025 estimated tax due dates irs reiko charlean, the irs expects more than 128.7 million individual tax returns to be filed by the april 15, 2025, tax deadline.

First estimated tax payment due;  — for the 2025 tax year, the estimated tax payment deadlines are as follows: