When dealing with IRS, there are important tax deadlines throughout the year. Here are a few key dates for 2024 to keep you in the know. For a more comprehensive list of dates and deadlines for individuals and businesses, explore IRS Publication 509.  

Important Dates

January 16 – Final estimated tax payment of 2023 due 

January 29 – Tax filing season begins 

January 31 – Due date for employers to provide annual income information (e.g., Forms W-2 or 1099) 

February 15 – Deadline to file form W-4 to maintain exemption for tax withholding 

March 15 – Partnerships and S corporations file 2023 calendar year returns 

April 15 – Individual taxes due, or request for extension of time to file 

April 15 – First estimated tax of 2024 due 

April 15 – Last day to make contributions to health savings accounts and individual retirement accounts for 2023 

April 17 – Individual taxes due for residents of Maine and Massachusetts due to state holidays 

June 17 – Individual taxes due for citizens and resident aliens living and working outside the U.S. 

June 17 – Second quarter estimated taxes due 

September 16 – Third quarter estimated taxes due 

October 15 – Tax due date for individuals who filed for an extension  

December 31 – Deadline for Required Minimum Distributions for retirement accounts 

January 15, 2025 – Final estimated tax payment of 2024 due 

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