During tax year 2022
10/15/2023 – Tax year 2022 - Last day to file Form 1040 that’s on automatic extension
During tax year 2023
4/18/2023 – Forms 1040 and 4868 (automatic extension - if needed) – tax year 2022
Tax year 2023 – estimated tax payments
4/18/2023 – 1st quarter
6/15/2023 – 2nd quarter
9/15/2023 – 3rd quarter
1/16/2024 – 4th quarter