With the extension of the April 15th tax deadline, there has been plenty of misunderstanding on what will be considered “late”. Typically, when you file your individual tax return as a self-employed individual (not corporations), your business income is stated on your personal return through a Schedule C, and are both due on the April 15th deadline usually. Self-employed individuals must also make estimated quarterly payments to the IRS, the first payment being due on April 15th along with your personal tax return. When these are filed, if there was an overpayment from 2020 taxes, it can be applied to current year (2021) estimated taxes. However, this year, if you file after April 15th, your estimated tax payment for first quarter 2021 is still due on April 15th , so, as of the date of this article there has been no extension on the deadline for the first quarter estimated tax payments.