Fact-check: Prop 42
Checked 2026-10-28. Claims: 22. Verified: 13. Corrected: 9. Unsupported: 0. Links fixed: 0.
| # | Claim (short) | Source checked | Status | Evidence / change |
|---|---|---|---|---|
| 1 | Yes $128.0M | SoS (thru 10/22) | Verified | "$127,977,037" |
| 2 | Biggest single Yes campaign on the ballot | Ballotpedia News; SoS | Corrected | Not every measure's total checked; Ballotpedia's largest itemized are Prop 3 $74.8M, Prop 38 $71.3M. Softened to "one of the biggest" and named those |
| 3 | Brin $102M | Ballotpedia News | Verified | |
| 4 | Sold as protecting "retirement and life savings" | SoS | Corrected | Phrase is the Yes committee's name ("Protect Retirement & Life Savings"), not in CalMatters; reworded and tagged SoS |
| 5 | Prop 40 already exempts pensions/retirement | LAO Prop 40 | Corrected | "generally would be excluded"; added "generally" |
| 6 | Wealth taxes 12 in 1990, 3 today | Euronews | Corrected | 12 (1990), 4 (2017) OECD; 3 in 2025 per Tax Foundation |
| 7 | Newsom backs it | CalMatters Oct 9 | Verified | "On Friday he endorsed Proposition 42" |
| 8 | Firefighters, police, Building Trades back it CalMatters Oct | CalMatters Oct 9; guide | Corrected | Oct 9 article names "police and fire unions" only; Building Trades is in the CalMatters guide. Split tags |
| 9 | State doesn't tax owning stocks | LAO | Verified | "there is no tax for simply owning those assets" |
| 10 | VLF and business equipment tax not repealed | LAO | Verified | LAO names both; bans only new taxes |
| 11 | Retroactive example | LAO | Corrected | LAO's example of a retroactive tax: "a tax on money someone earned two years ago"; Prop 42 "limits the situations" |
| 12 | Wealth taxes table row | Euronews | Corrected | added 2017 count; retagged Euronews citing OECD (old tag "OECD" unmatched) |
| 13 | Bans new taxes on owning personal property | LAO | Verified | "Personal property is all the things that people own other than real estate" |
| 14 | Limits retroactive taxes | LAO | Verified | |
| 15 | Voids conflicting taxes after Jan 1, 2026 incl. Prop 40 | CalMatters guide | Verified | "Nullifies taxes enacted after January 1, 2026 that conflict"; "would nullify Proposition 40 if it receives more votes" |
| 16 | Fiscal effect: harder tax increases, size unknown | LAO | Corrected | LAO: "could reduce future tax revenues... how much ... is unclear" |
| 17 | No $22.7M mostly SEIU-UHW | SoS | Verified | $22,741,302; SEIU-UHW committee $21,249,723 |
| 18 | Supporter list | CalMatters guide; Oct 9 | Verified | Newsom not in guide; tagged to Oct 9 article |
| 19 | For: SD U-T, OC Register | CalMatters guide | Verified | |
| 20 | Against: SEIU-UHW, Dem Party, SacBee, SF Chronicle | CalMatters guide | Verified | |
| 21 | "Didn't find a public explanation" of unions' reasons | — | Verified (analysis) | first-person; left as is |
| 22 | Footnote rules | — | Fixed | duplicate LAO Prop 40 removed; SoS Sources label starts with "SoS" |