California & Federal Taxes: Key Deadlines You Need To Know In 2024

Ah, taxes. The very mention can induce a collective sigh across the nation. But do not worry, taxpayers! While the world of tax filing can feel daunting, staying informed about key deadlines is crucial to avoid penalties and ensure a smooth filing process. This comprehensive calendar outlines major tax deadlines for both individuals and businesses operating in California and throughout the United States.

The only certainty is death and taxes – Benjamin Franklin

Understanding Your Taxpayer Status

The specific tax deadlines you encounter will depend on your taxpayer status. Here’s a breakdown of the two main categories:

  • Individuals: This includes single filers, married couples filing jointly or separately, and heads of household.
  • Businesses: This encompasses various business structures, such as sole proprietorships, partnerships, corporations, and S corporations.

Tax Deadlines for Individuals (Federal & California):


  • Estimated Tax Payment (Q4 2023): If you owe income tax based on your income or have self-employment income, you may need to make a quarterly estimated tax payment by January 18th, 2024 (the deadline was extended due to recent storms in some California counties).


  • Individual Income Tax Return (Federal & California): The standard filing deadline for most individual tax returns is April 15th, 2024. This applies to both federal and California income tax returns.
  • Extension to File (Federal & California): If you need more time to file your federal or California return, you can electronically request an extension to file by April 15th, 2024. This extension grants you an additional six months to file your return, pushing the deadline to October 15th, 2024. It’s important to note that filing an extension to file does not automatically extend the deadline for paying any taxes owed.


  • Estimated Tax Payment (Q2 2024): The second quarter estimated tax payment for 2024 is due on June 17th, 2024.


  • Estimated Tax Payment (Q3 2024): The third quarter estimated tax payment for 2024 is due on September 16th, 2024.


  • Individual Income Tax Return (Extension): If you filed an extension to file in April, the extended deadline for submitting your federal and California income tax returns is October 15th, 2024.
  • Estimated Tax Payment (Q4 2024): The final estimated tax payment for 2024 is due on January 15th, 2025 (considered an early payment for 2025).

California-Specific Deadlines:

  • California Franchise Tax Board (FTB) Estimated Tax Payment: California requires estimated tax payments from high-income earners who owe more than $1,000 in state income tax after withholding. These estimated payments are typically due on April 15th, June 15th, September 15th, and January 15th of the following year.

Tax Deadlines for Businesses (Federal & California):

Business tax deadlines can vary depending on your business structure. Here’s a general overview:

  • C Corporations: The federal income tax return for C corporations is typically due on the 15th day of the third month following the close of the tax year. For calendar year corporations (ending December 31st), the deadline falls on March 15th of the following year. California filing deadlines for C corporations typically mirror the federal deadlines.
  • S Corporations: S corporations generally file their federal tax return on the 15th day of the third month following the close of the tax year. California filing deadlines for S corporations may differ slightly, so it’s important to consult with a tax professional.
  • Partnerships: Partnerships do not pay income tax themselves; instead, the income “passes through” to the individual partners who report it on their personal tax returns. However, partnerships are required to file an informational return (Form 1065) by the 15th day of the third month following the close of the tax year. California filing deadlines for partnerships may differ, so consult with a tax professional.
  • Sole Proprietorships: Sole proprietors report business income and expenses on their personal tax return (Form 1040). The filing deadline for sole proprietors typically aligns with the individual filing deadline of April 15th (or October 15th with an extension).

Additional Considerations:

  • State and Local Filing Requirements: While this blog focuses on federal and California tax deadlines, some states and localities may have additional filing requirements. It’s crucial to research any state or local tax deadlines that might apply to you.

  • Penalties and Interest: Missing tax deadlines can result in penalties and interest charges. It’s always best to file your return on time or file an extension to avoid these consequences.

  • Recordkeeping: Maintaining accurate and organized records throughout the year is essential for a smooth tax filing process. This includes receipts, invoices, bank statements, and any other documentation related to your income and expenses.

  • Seek Professional Help: If you have a complex tax situation or simply want peace of mind, consider consulting with a qualified tax professional. A tax advisor can help you navigate the intricacies of tax filing, ensuring you take advantage of all applicable deductions and credits.

Staying on top of tax deadlines is crucial for responsible tax citizenship. By understanding the key filing dates and taking proactive measures, you can avoid penalties and ensure a smooth filing experience. Remember, this blog provides a general overview; specific deadlines may vary depending on your unique tax situation.

Check out our previous blog on Tax Time Troubles? 5 Common Mistakes to Avoid and How to Stay Clear.

ABSE Tax is Here to Help! At ABSE Tax, located at 18000 Pioneer Blvd, Suite 203, Artesia, CA 90701, we are a team of experienced tax professionals dedicated to helping individuals and businesses navigate the complexities of tax filing.  We offer a wide range of tax services, from  preparation and filing to audit representation.  Whether you’re a California resident or filing taxes nationwide, we can help you ensure you meet all relevant deadlines and maximize your tax benefits.  Contact us today at (562) 403-1177 or info@absetax.com to schedule a consultation and discuss your tax needs.  Let us take the stress out of tax season and ensure a worry-free filing experience.

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