July 20, 2021

With the first two quarters of the year behind us, filers should focus on a number of Q3 and Q4 tax deadlines. The lists below include important tax due dates for individuals, certain payroll tax due dates for employees and employers, and other key due dates for for-profit entities.

While not all-inclusive, these are some of the most common tax filings. Some deadlines were extended due to the ongoing impact of the pandemic, while others remain unchanged from previous years.

Important 2021 3rd Quarter (July, August, and September) Tax Deadlines

Important 2021 4th Quarter (October, November and December) tax deadlines

Filers with questions or concerns about these deadlines should contact their CPA to discuss the impact on their 2021 taxes.

For more information about these tax deadlines, contact us



Jennifer Galstad-Lee, CPA, JD

Former Senior Manager, Tax