https://www.irs.gov/newsroom/2021-tax-filing-season-set-to-begin-february-12
The above was published 1/28 and has this list of dates
Important filing season dates
- Friday, February 12. IRS begins 2021 tax season. Individual tax returns start being accepted and processing begins.
- Thursday, April 15. Due date for filing 2020 tax returns or requesting extension of time to file.
- Thursday, April 15. Due date for paying 2020 tax owed to avoid owing interest and penalties.
- Friday, October 15. Due date to file for those requesting an extension on their 2020 tax returns.
The third line there only refers to late payment penalties and not underpayment penalties?
