As we approach the 2025 tax season, it’s crucial for businesses and individuals to stay informed about key filing deadlines. Missing these important dates can result in penalties and interest, so mark your calendars and plan ahead. Below is a breakdown of the most important tax deadlines for S corporations, partnerships, C corporations, and individuals.

Business Tax Deadlines for 2025

March 15, 2025: Deadline for S-Corporations and Partnerships

If your business is structured as an S corporation (Form 1120S) or a partnership (Form 1065), your federal tax return is due by March 15, 2025. This deadline applies to calendar-year businesses.

  • If you need extra time, you can file Form 7004 to request a six-month extension, which moves the deadline to September 15, 2025.

  • Note: This is just an extension to file, not an extension to pay. Any taxes owed must still be paid by the original March deadline to avoid penalties.

April 15, 2025: Deadline for C-Corporations

For C corporations (Form 1120) operating on a calendar-year basis, the deadline to file federal tax returns is April 15, 2025.

  • Businesses that require more time can file Form 7004 for an automatic six-month extension, shifting the deadline to October 15, 2025.

  • As with S corporations and partnerships, filing an extension does not extend the payment deadline.

Individual Tax Deadlines for 2025

April 15, 2025: Individual Income Tax Returns Due

The deadline for most individual taxpayers to file their 2024 income tax returns (Form 1040) is April 15, 2025.

  • If you need more time, you can file Form 4868 for an automatic six-month extension, which moves the deadline to October 15, 2025.

  • However, you must pay any estimated taxes owed by April 15 to avoid interest and penalties.

Quarterly Estimated Tax Payment Deadlines for 2025

Self-employed individuals, independent contractors, and gig workers must make quarterly estimated tax payments to avoid underpayment penalties. Here are the key dates:

  • January 15, 2025 – Q4 2024 estimated tax payment due

  • April 15, 2025 – Q1 2025 estimated tax payment due

  • June 16, 2025 – Q2 2025 estimated tax payment due

  • September 15, 2025 – Q3 2025 estimated tax payment due

  • January 15, 2026 – Q4 2025 estimated tax payment due

Other Important Tax Deadlines

January 31, 2025: W-2 and 1099 Forms Due

Employers must send W-2s to employees and 1099s to independent contractors by this date. This ensures that individuals can file their taxes on time.

April 1, 2025: Required Minimum Distributions (RMDs) Due

If you turned 73 in 2024, you must take your first required minimum distribution (RMD) from retirement accounts by April 1, 2025.

December 31, 2025: Final RMD Deadline

Individuals aged 73 or older must take their required minimum distributions by this date to avoid penalties.

Plan Ahead to Avoid Penalties

Staying on top of these tax deadlines is essential for businesses and individuals. If you’re unsure about your tax obligations, consult with a tax professional or CPA to ensure compliance and optimize your tax strategy.

For expert tax planning and business consulting, Fogarty Business Solutions is here to help. Contact us today to stay ahead of your tax deadlines and maximize your financial efficiency!