2025 IRS Key Tax Dates

Jan. 15: Final estimated tax payment for 2024 due
Jan. 27: IRS begins processing 2024 tax returns
March 15: Corporate & Estate Returns Due
April 15: Filing deadline for 2024 taxes. First estimated tax payment for tax year 2025 due
June 16: Second estimated tax payment for 2025 due
Sept. 15: Third estimated tax payment for 2025 due
Oct. 15: Extended deadline to file 2024 tax return
Jan. 15, 2026: Fourth estimated tax payment for 2025 due When does tax season start? The IRS will begin accepting and processing new returns on Jan. 27.