2024 Important Tax Deadline Dates January 2024 10TH - Tips for December 2023 reported to employer 16TH - Estimated tax payment for 4th quarter of 2023 16TH - Farmers and fishermen pay estimated tax for 2023 31ST - Deadline to file and pay 2023 taxes in full if not making an estimated tax payment in January. February 2024 12TH - Tips for January 2024 reported to employer 15TH - File Form W-4 to reclaim exemption from withholding for 2024 March 2024 1ST - Farmers and fishermen file 2023 tax return to avoid penalty if estimated tax not paid by Jan. 11TH - Tips for February 2024 reported to employer 15TH - Partnerships and S-Corporations file 2023 business tax returns April 2024 10TH - Tips for March 2024 reported to employer 15TH - File 2023 tax return and pay tax due 15TH - File Form 4868 to request 6-month income tax return filing extension (payment of tax not extended) 15TH - File Schedule H (1040) and pay employment taxes for household employees (file separately if Form 1040 is not filed) 15TH - Estimated tax payment for 1st quarter of 2024 15TH - Contribute to individual retirement account (IRA) for 2023 15TH - Withdraw excess IRA contributions in 2023 to avoid penalty if filing of form 1040 was not extended 15TH - Contribute to health savings account (HSA) for 2023 15TH - Contribute to solo 401(k) plan or simplified employee pension (SEP) plan for 2023 by self-employed if filing of form 1040 was not extended May 2024 10TH - Tips for April 2024 reported to employer June 2024 10TH - Tips for May 2024 reported to employer 17TH - Estimated tax payment for 2nd quarter of 2024 17TH - U.S. taxpayers living and working abroad file 2023 tax return 17TH - U.S. taxpayers living and working abroad file form 4868 to request 4-month income tax return filing extension (payment of tax not extended) 17TH - Military personnel on duty outside the U.S. file 2023 tax return 17TH - Military personnel on duty outside the U.S. file Form 4868 to request 4-month income tax return filing extension (payment of tax not extended) July 2024 10TH - Tips for June 2024 reported to employer August 2024 10TH - Tips for July 2024 reported to employer September 2024 10TH - Tips for August 2024 reported to employer 16TH - Estimated tax payment for 3rd quarter of 2024 October 2024 10TH - Tips for September 2024 reported to employer 15TH - File extended 2023 tax return (Form 1040) 15TH - Withdraw excess IRA contributions in 2023 to avoid penalty if filing of Form 1040 was extended 15TH - Contribute to solo 401(k) plan or simplified employee pension (SEP) plan for 2023 by self-employed if you received a filing extension November 2024 10TH - Tips for October 2024 reported to employer December 2024 10TH - Tips for November 2024 Reported to Employer 31ST - Contribution to employer-sponsored retirement plan for 2024 (401(k), 403(b), 457 or federal thrift savings plans) IRS Extension Deadline: October 15, 2024