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California Individual Income Tax Filing deadlines and extensions for 2024 tax professionals to reference when working with clients.
If your client is a resident or has been involved in significant business operations within California, they might be required to file California State Taxes. This document outlines the most important tax deadlines and tax extensions for California in 2024.
California Individual Income Tax Filing deadlines and extensions for 2024 tax professionals to reference when working with clients.
If your client is a resident or has been involved in significant business operations within California, they might be required to file California State Taxes. This document outlines the most important tax deadlines and tax extensions for California in 2024.
You must file & pay Corporate Income Taxes in California on behalf of your clients by April 15, 2025.
You must send payment for taxes in California for the fiscal year 2024 on behalf of your clients by April 15, 2025.
The Extension Deadline is November 15, 2025, to file your California corporate income tax return.
California automatically grants seven months' extensions on filing corporate income tax returns. This means you do not need to file for an extension in California.
This is an extension to FILE, not an extension to PAY – payment is still due April 15, 2025.
You must file in California on behalf of your clients by March 15, 2025.
You must send payment for taxes in California for the fiscal year 2024 on behalf of your clients by March 15, 2025.
The Extension Deadline is September 15, 2025, to file your California S-Corporation income tax return. The Extension Deadline is October 15, 2025, to file your California partnership income tax return.
California automatically grants a 6-month extension on filing S-Corporation income tax returns and automatically grants a 7-month extension on filing Partnership income tax returns. This means you do not need to file for an extension in California.
This is an extension to FILE, not an extension to PAY – payment is still due March 15, 2025.
Estimated tax payments should be made on behalf of your clients:
You must file & pay Individual Income Taxes in California on behalf of your clients by April 15, 2025.
You must send payment for taxes in California for the fiscal year 2024 on behalf of your clients by April 15, 2025.
The Extension Deadline is October 15, 2025, to file your California Individual Income tax return. California automatically grants six months' extension on filing personal income taxes. This means you do not need to file for an extension in California.
This is an extension to FILE, not an extension to PAY – payment is still due April 15, 2025.
California Estate Tax filings are due on behalf of your clients by April 15, 2025.
If your client is a farmer or fisherman and at least two-thirds of their 2023 and 2024 gross income is from farming or fishing, they may do either of the following:
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The material discussed on this page is meant for general illustration and/or informational purposes only and is not to be construed as investment, tax, or legal advice. You must exercise your own independent professional judgment, recognizing that advice should not be based on unreasonable factual or legal assumptions or unreasonably rely upon representations of the client or others. Further, any advice you provide in connection with tax return preparation must comply in full with the requirements of IRS Circular 230.
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