California Prop 13 and Prop 19 Supplemental Property Tax Bills and Escrow — CaliHomeowner
Updated November 2026
Separate the assessed base from the supplemental bill
Proposition 13 generally limits annual growth of the assessed base to 2% absent reassessable events, but a purchase commonly establishes a new base at current market value. Supplemental assessments reconcile the change for the applicable portion of the fiscal year; timing can produce more than one bill. The constitutional 1% base levy is not the entire bill because approved debt and assessments may apply. Consult the California Board of Equalization.
Treat Proposition 19 relief as an application process
Eligible homeowners age 55 or older, qualifying disabled owners and certain disaster victims may transfer a base-year value under Proposition 19, subject to timing and value rules. Inherited-property exclusions have separate principal-residence and value restrictions. Do not assume either benefit transfers automatically. Ask the assessor about filing deadlines and the servicer whether supplemental bills are escrowed; reserve cash until both confirm how the new assessment and any relief will be handled.
Documents and decision checkpoints
| Decision | Evidence to request | Cost or underwriting consequence |
|---|---|---|
| Select assistance | Current program guide, reservation and income calculation | Funding availability and lender approval are separate |
| Estimate taxes | Assessor record, exemptions and completed-property estimate | The seller's tax bill may understate the buyer's payment |
| Compare financing | Loan Estimates with the same amount, term and lock period | Include insurance, fees and subordinate debt |
| Plan a sale or refinance | Assistance note, payoff terms and lien-release requirements | Deferred debt or recapture can reduce available equity |
For a CA transaction, confirm the rules effective on the reservation and closing dates. A 2026 title is not evidence that a funding round is open. Ask which lender conditions remain outstanding, and obtain written figures before waiving a financing contingency. Keep tax returns, account numbers and court records out of editorial correspondence.
Plan the payment and verify the source
Use the monthly payment calculator to estimate principal, interest, taxes and insurance, and the closing cost estimator to plan upfront cash. Add HOA dues, maintenance and subordinate-loan payments separately if a tool omits them. Compare loan structures in the mortgage guides directory. Calculator results are estimates, not credit decisions or rate locks.
Review the CFPB mortgage resources and HUD housing resources alongside CalHFA and California State Board of Equalization. Verify publication dates, local requirements and lender overlays. Agency eligibility, legal ownership and mortgage approval are different determinations. This material is educational, not an offer to lend or individualized legal or tax advice.
Compare Current Mortgage Rates
Compare current APRs, points, fees, and estimated monthly payments from participating lenders below.
Loan Program Comparison: 2026 Benchmarks
California Prop 13 and Prop 19 Supplemental Property Tax Bills and Escrow — Choose a mortgage by comparing eligibility, upfront cash and total monthly costs, not the advertised rate alone. Conventional, FHA, VA and USDA serve different borrowers. Confirm county limits, taxes, insurance and lender requirements before comparing personalized Loan Estimates for your household.
Historical 2025 one-unit comparison: conforming $832,750; FHA floor $541,287. County and unit-count limits can differ.
| Loan program | Down payment / equity | 2026 one-unit baseline | Costs and page-specific comparison |
|---|---|---|---|
| Conventional | 3%–5% subject to eligibility | $832,750 | PMI generally below 20% down |
| FHA | 3.5% at 580+; 10% at 500–579 | $541,287 floor | 1.75% upfront MIP; 0.55% annual for >95% LTV, base loan ≤$726,200, term >15 years |
| VA | 0% for eligible borrowers | No VA limit with full entitlement | No monthly PMI; funding fee unless exempt |
| USDA | 0% for eligible borrowers | Income, address and repayment eligibility | Guarantee and annual fees; confirm current schedule |
| Jumbo | Lender-specific cash and reserves | Above applicable conforming limit | Lender-specific pricing and insurance |
| Home Equity / Refinance | Equity and underwriting dependent | Property and lender dependent | Compare closing costs, term and break-even |
Sources: FHFA limits; HUD FHA limits.
Editorial Methodology & Primary Sources
Verification date: Not recorded; check the primary source and lender timestamp before relying on an estimate.
Rate comparisons use participating lender feeds, not a whole-market survey or guaranteed offers. Freddie Mac PMMS is a market benchmark, not a personalized quote. Calculator models rely on published regulatory formulas and disclosed assumptions rather than fabricated first-person loan testing.
Monthly principal and interest use the amortization formula P × r / (1 − (1 + r)−n), where r is the monthly note rate and n is the number of payments; at zero interest use P / n. PITI adds monthly property taxes and homeowners insurance; PMI is separate. APR includes applicable finance charges under Regulation Z and is not the note rate used for payments. Compare lender Loan Estimates for actual APR and fees.
- Consumer Financial Protection Bureau (CFPB) — Loan Estimates, APR and borrower disclosures; Regulation Z.
- U.S. Department of Housing and Urban Development (HUD / FHA) — FHA program guidance.
- U.S. Department of Veterans Affairs (VA) — VA loan eligibility and benefits.
- Freddie Mac Primary Mortgage Market Survey (PMMS) — published rate benchmarks.
- U.S. Census state tax collections — state property tax benchmarks; confirm parcel-specific assessments and exemptions with the state revenue department and local assessor.
- CalHFA — state housing finance and property tax authority.
- California State Board of Equalization — state housing finance and property tax authority.
The payment snapshot uses illustrative annual taxes of 1% of home price, $1,200 insurance and 0.5% PMI below 20% down, not verified local quotes. Other calculators disclose their inputs and assumptions. Published guidance and lender feeds may change independently; confirm current program rules, taxes and offers before a decision.