IRS Tax Deadlines 2024 Tax Year

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• January 2025 – IRS begins accepting returns 

• January 16, 2025 – Fourth quarter estimated payments due for tax year 2024 

• January 31, 2025 – Employers must mail W-2 forms 

• April 15, 2025 – Tax Day/federal returns and payments due, final day for 401k contributions, final day to file an extension 

• October 15, 2025 – Late filing deadline