ARTICLE 6. Collection of Supplemental Taxes [75.50. - 75.55.]

Cal. Revenue and Taxation Code - RTC 6.

in effect

Cal. Revenue and Taxation Code - RTC § 75.50. Section 75.50.

The auditor shall transmit supplemental assessments entered on the supplemental roll to the tax collector for preparation of supplemental tax bills, and charge the tax collector with the taxes extended thereon.

Cal. Revenue and Taxation Code - RTC § 75.51. Section 75.51.

The tax collector shall mail or electronically transmit a supplemental tax bill to the assessee, including the following information either on the bill or in a separate statement accompanying the bill: (a) The information supplied by the assessor to the auditor pursuant to Section 75.40. (b) The amount of the supplemental taxes due. (c) The date the notice is mailed. (d) The date on which the taxes will become delinquent and the penalties for delinquency. (e) A statement that the supplemental taxes were determined in accordance with Article XIII A of the California Constitution which generally requires reappraisal of property whenever a change in ownership occurs or property is newly constructed. (f) The tax rates or the dollar amounts of taxes levied by each revenue district and taxing agency on the property covered by the tax bill. (g) All of the following: (1) Information specifying that if the taxpayer disagrees with a change in the assessed value as shown on the tax bill, the taxpayer has the right to an informal assessment review by contacting the assessor’s office. (2) (A) Except as provided in subparagraph (B), information specifying that if the taxpayer and the assessor are unable to agree on proper assessed value pursuant to an informal assessment review, the taxpayer has the right to file an application for reduction in assessment for the following year with the county board of equalization or the assessment appeals board, as applicable, and the time period during which the application will be accepted. (B) For counties in which the board of supervisors has adopted the provisions of subdivision (c) of Section 1605, information advising that the assessee has a right to appeal the supplemental assessment, and that the appeal is required to be filed within 60 days of the date of the mailing or electronic transmittal of the tax bill. For the purposes of equalization proceedings, the supplemental assessment shall be considered an assessment made outside of the regular assessment period as provided in Section 1605. (3) The address of the clerk of the county board of equalization or the assessment appeals board, as applicable, at which forms for an application for reduction may be obtained.

Cal. Revenue and Taxation Code - RTC § 75.52. Section 75.52.

(a) Taxes on the supplemental bill are due on the date mailed and shall become delinquent as follows: (1) If the bill is mailed within the months of July through October, the first installment shall become delinquent at 5 p.m. on December 10 of the same year. The second installment shall become delinquent at 5 p.m. on April 10 of the next year. (2) If the bill is mailed within the months of November through June, the first installment shall become delinquent at 5 p.m. on the last day of the month following the month in which the bill is mailed. The second installment shall become delinquent at 5 p.m. on the last day of the fourth calendar month following the date the first installment is delinquent. (b) If the taxes due are not paid on or before the date and time they become delinquent, a penalty of 10 percent shall attach to them. (c) The cost enumerated in Section 2621 shall be collected after the second installment is delinquent. (d) If a delinquent date specified in subdivision (a) falls on a Saturday, Sunday, or legal holiday, the time of delinquency is at 5 p.m. or at the close of business, whichever is later, on the next following business day. If the board of supervisors, by adoption of an ordinance or resolution, closes the county’s offices for business prior to the time of delinquency on the “next business day” or for that whole day, that day shall be considered a legal holiday for purposes of this section. (e) (1) The penalty imposed for delinquent taxes as provided by this article shall be canceled if the assessee or fee owner demonstrates to the tax collector that the delinquency is due to the tax collector’s failure to mail or electronically transmit the tax bill to the address provided on the tax roll or electronic address provided and authorized by the taxpayer or fee owner to the tax collector. Penalties imposed may be canceled if the board of supervisors, upon recommendation of the tax collector, has authorized the tax collector to establish, and the tax collector has so established, specific procedures for the consideration of penalty cancellations. Those procedures may provide that penalties imposed may be canceled by resolution of the county board of supervisors upon the recommendation of the tax collector if the assessee or fee owner demonstrate to the tax collector that the delinquency is due to the county’s failure to send a notice of taxes to the owner of property acquired after the lien date on the secured roll, provided payment of the amount of taxes due, minus any penalties and costs, is made no later than June 30 of the fiscal year in which the property owner is named as the assessee for taxes coming due. (2) With respect to a late, amended, or corrected tax bill, the penalties imposed for delinquent taxes shall be canceled if the tax amount is paid within 30 days following the date that bill is mailed or electronically transmitted. (3) Under no circumstance shall a taxpayer have fewer than 30 days to pay without penalty.

Cal. Revenue and Taxation Code - RTC § 75.53. Section 75.53.

If all delinquent amounts which are a lien on real property are not paid in full by the time fixed in the publication of the notice of impending default for failure to pay real property taxes next following the date of delinquency of the second installment of the supplemental taxes, the property shall be subject to the provisions of Section 3436.

Cal. Revenue and Taxation Code - RTC § 75.54. Section 75.54.

(a) Taxes on the supplemental roll become a lien against the real property on the date of the change in ownership or completion of new construction unless by other provisions of law the taxes are not a lien on real property. (b) With respect to taxes that are not a lien on real property that have become delinquent on the supplemental roll, the tax collector may use the procedures applicable to the collection of delinquent taxes on the unsecured roll for collection of the tax. If taxes that are not a lien on real property remain unpaid at the time set for declaration of tax default, following a delinquency in the payment of the second installment of the taxes, the taxes and any penalties and costs thereon shall be transferred to the unsecured roll for collection. (c) Notwithstanding subdivision (a), in the event there is a subsequent change in ownership following an initial change in ownership or completion of new construction, that occurs before the mailing of the supplemental tax billing attributable to the initial change in ownership or completion of new construction, then the lien for supplemental taxes is extinguished and that portion of the supplemental assessment attributable to the assessee from the date of the initial change in ownership or completion of new construction to the date of the subsequent change in ownership shall be entered on the unsecured roll or on the supplemental roll as an unsecured assessment in the name of the person who would have been the assessee if the additional change in ownership had not occurred, and thereafter that portion of the tax shall be treated and collected like other taxes on the unsecured roll. The remaining portion of the supplemental tax attributable to the initial change in ownership becomes a lien against the real property on the date of the subsequent change in ownership which lien shall also secure any increase or decrease in supplemental taxes resulting from the determination of the new base year value required to be made following the subsequent change in ownership. (d) In lieu of determining, as provided in subdivision (c), the portion of the supplemental assessment attributable to the person who would have been the assessee if the additional change in ownership had not occurred, a county may elect to compute that portion of the supplemental assessment attributable to the assessee from the first day of the month following the date of the initial change in ownership or completion of new construction to the date of the subsequent change in ownership.

Cal. Revenue and Taxation Code - RTC § 75.55. Section 75.55.

(a) A county board of supervisors may, by ordinance, provide for the cancellation of any supplemental tax bill in which the amount of taxes to be billed is less than the cost of assessing and collecting them. In no event shall any supplemental tax bill be canceled pursuant to this subdivision if the amount of taxes on that bill exceeds fifty dollars ($50). (b) Except where a county board of supervisors has adopted an ordinance pursuant to subdivision (a), a county board of supervisors may, by ordinance, provide for the cancellation by the assessor of any supplemental assessment where that assessment would result in an amount of taxes due which is less than the cost of assessing and collecting them. In no event shall any supplemental assessment be canceled pursuant to this subdivision if the amount of taxes resulting from that supplemental assessment would exceed fifty dollars ($50). (c) Notwithstanding this section, no taxable real property shall be exempt from property taxes assessed on the lien date, as provided in Section 2192, unless the property is otherwise exempt under this division.

Source: CA Legislative Counsel Bulk DataURL: https://downloads.leginfo.legislature.ca.gov/pubinfo_2025.zipFetched: 6/27/2026