Adjusted Interest Rate for January 2010 to June 2010
October 2009 - Pursuant to Revenue and Taxation Code Section (R&TC) 19521 (formerly 19269), the adjusted interest rate has been determined for the period January 1, 2010, through June 30, 2010. The adjusted interest rate is four percent. This is the rate compounded daily that accrues with respect to various state taxes including: personal income, corporate income, and franchise. The rate for corporation tax overpayments for the period is zero percent. If you are interested in viewing the previous interest and estimate penalty rates, go to ftb.ca.gov and search for interest rates.