Section 30202 Of Article 2. Deficiency Determinations From California Revenue And Taxation Code >> Division 2. >> Part 13. >> Chapter 4. >> Article 2.

. The amount of the determination, exclusive of penalties, shall bear interest at the modified adjusted rate per month, or fraction thereof, established pursuant to Section 6591.5, from the date the amount of the tax, or any portion thereof, should have been reported until the date of payment.