California Code, Streets and Highways Code - SHC § 8766

(a) The amount of any delinquent installments of principal and interest, together with penalties accrued to the date of prepayment.

(b) The unpaid, nondelinquent principal of the assessment, including principal posted to the tax roll for the current fiscal year but not yet paid.

(c) An allowance for redemption premium, calculated by multiplying the amount of the unmatured principal by the redemption premium percentage stated in the bonds. Unmatured principal excludes principal due during the fiscal year of prepayment.

(d) A reasonable fee, fixed by the treasurer, for the cost of administering the prepayment and the advance redemption of bonds.

(e) Interest accrued to the next call date of the bonds. The next call date is the next bond interest payment date which is not less than 90 days after the date of prepayment. Credit shall be given, or a refund provided, for installments of interest posted to the current tax roll and actually paid.

(f) A credit for the reserve fund calculated pursuant to Section 8881.