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California Interest Rates

California sets the state interest rate each 6 months. The interest is compounded daily, and accrues for personal income, corporate income, and franchise taxes. Here are the rates:

 Jan - JunJul - Dec
20078% 
20066%7%
20054%5%
20045%4%
20036%5%
20027%6%
20019%9%
20008%8%
19998%7%
19989%9%
19979%9%
19969%9%
19958%9%
19947%7%
19938%7%
199210%9%
199111%10%
199011%11%
198911%12%

Before this date the rates changed by quarter. The full history is available at the Franchise Tax Board rate table.

"Tax software is no substitute for tax knowledge."

Any views expressed herein are based on our best information. The content of this web site was written as general information without specific individual information and thus may not apply in all situations. This material was not written, and cannot be used by the taxpayer for the purpose of avoiding penalties that may be imposed on the taxpayer.

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Janelle Ogg, EA
Richard Ogg, EA