---
type: "Bill"
title: "Personal income taxes: contributions: Alzheimer's disease."
description: "Personal income taxes: contributions: Alzheimer's disease."
jurisdiction: "us/states/ca"
legislature: "California Legislature"
session: "19992000"
identifier: "AB 160"
citation: "California AB 160 (19992000)"
classification: ["bill"]
subjects: ["Personal income taxes: contributions: Alzheimer's disease."]
status: "enacted"
primary_sponsors: ["Alquist"]
version_count: 4
action_count: 18
vote_count: 6
first_action: "1999-01-15"
last_action: "1999-09-03"
source: "openstates"
source_identifier: "ocd-bill/bb56f849-2e63-46c6-819d-7c3b85ed906e"
source_url: "http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=199920000AB160"
source_hash: "6878680cb2f000958888f48d8d4af875b4771174bc40d0bb596503af263af94f"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-ca"]
---

# California AB 160 (19992000) — Personal income taxes: contributions: Alzheimer's disease.

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **01/15/99 - Introduced** (filed) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=199920000AB160&version=19990AB16099INT)
2. **09/03/99 - Chaptered** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=199920000AB160&version=19990AB16097CHP)
3. **AB160** (committee substitute) — [source](http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=199920000AB160)
4. **08/24/99 - Enrolled** (enrolled) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=199920000AB160&version=19990AB16098ENR)

## Votes

- Do pass, but re-refer to the Committee on Appropriations. — **pass** (pass) · upper
- Do pass and be re-referred to the Committee on Appropriations. — **pass** (pass) · lower
- Do pass. — **pass** (pass) · lower
- Assembly 3rd Reading AB160 Alquist By Hughes — **pass** (pass) · upper
- AB 160 ALQUIST THIRD READING — **pass** (pass) · lower
- Do pass. — **pass** (pass) · upper

## Sponsors

- Alquist — primary (person)

## Timeline

The legislative action history — every referral, reading, and vote.

- **1999-09-03** Chaptered by Secretary of State - Chapter 315, Statutes of 1999.
- **1999-09-02** Approved by the Governor. `executive-signature`
- **1999-08-26** Enrolled and to the Governor at 1:30 p.m.
- **1999-08-24** In Assembly. To enrollment.
- **1999-08-24** Read third time, passed, and to Assembly. (Ayes 35. Noes 2. Page 2596.) `passage, reading-3, reading-1`
- **1999-07-14** Read second time. To third reading. `reading-2, reading-1`
- **1999-07-13** From committee: Do pass. (Ayes 9. Noes 2.). `committee-passage, committee-passage-favorable`
- **1999-06-17** From committee: Do pass, and re-refer to Standing Committee on Appropriations Re-referred. (Ayes 6. Noes 1.). `committee-passage, committee-passage-favorable, referral-committee`
- **1999-05-26** Referred to Standing Committee on Revenue and Taxation. `referral-committee`
- **1999-05-20** In Senate. Read first time. To Standing Committee on Rules for assignment. `reading-1`
- **1999-05-20** Read third time, passed, and to Senate. (Ayes 60. Noes 12. Page 1747.) `passage, reading-3, reading-1`
- **1999-05-17** Read second time. To third reading. `reading-2, reading-1`
- **1999-05-13** From committee: Do pass. (Ayes 15. Noes 6.) (May 12). `committee-passage, committee-passage-favorable`
- **1999-04-13** From committee: Do pass, and re-refer to Standing Committee on Appropriations Re-referred. (Ayes 6. Noes 0.) (April 12). `committee-passage, committee-passage-favorable, referral-committee`
- **1999-04-05** In committee: Set, first hearing. Hearing canceled at the request of author.
- **1999-02-01** Referred to Standing Committee on Revenue and Taxation. `referral-committee`
- **1999-01-19** From printer. May be heard in committee February 18.
- **1999-01-15** Read first time. To print. `reading-1`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/bb56f849-2e63-46c6-819d-7c3b85ed906e`. Confidence: reported (aggregated from official California legislature records).