4.1 Proposition 13 Tax Limitations

Proposition 13: The 1978 Tax Revolt

On June 6, 1978, California voters passed Proposition 13 (Article XIII A of the State Constitution), the People's Initiative to Limit Property Taxation. It replaced an unpredictable market-value assessment system with an acquisition-value system. The California Department of Real Estate (DRE) salesperson exam reliably tests Proposition 13 in both concept and math questions, so memorize the three numerical anchors: the 1% rate cap, the 2% annual assessment cap, and the base year value rule.

The Three Pillars

Pillar 1 - The 1% Rate Cap

The ad valorem ("according to value") general tax rate may not exceed 1% of assessed value. Local agencies layer additional levies on top, so the bill a homeowner actually pays is usually 1.1%-1.3%.

Pillar 2 - The 2% Assessment Cap

Absent a reassessment event, the factored base year value may increase by no more than 2% per year, or the change in the California Consumer Price Index (CPI) if that is lower. So a $500,000 base may be factored to at most $510,000 the next year even if the home doubles in market value.

Pillar 3 - Reassessment Triggers

Routine repairs, like-kind replacement, and adding solar do not count as reassessable new construction.

Base Year Value

The base year value anchors every future assessment. It is the full cash value on the date of acquisition; property held continuously since before March 1, 1975 uses its 1975-76 roll value.

Worked Example - Compounding the 2% Factor

A buyer purchases a home in 1990 for $200,000. With the maximum 2% factor each year and no reassessment:

Even if the home is now worth $1,500,000, the taxable assessed value stays near $400,000. Annual tax at the 1% base is roughly $4,000, not $15,000. This "lock-in" is exactly why long-term owners hesitate to move - and why Proposition 19 (Section 4.4) created portability for those 55 and older.

Quick Math Drill

• Assessed value $480,000 at a 1.15% combined rate = $5,520 annual tax.
• Same property the next year (2% factor): $489,600 base x 1% = $4,896 general tax, before add-ons.

Who Benefits and the Ongoing Debate

• Long-term owners - taxed on decades-old prices.
• Commercial owners - entities can change without a deemed "change in ownership," preserving low bases (a frequent criticism).
• Inherited property - now narrowed by Proposition 19.

Common Exam Traps

• The 2% is a maximum, not a guaranteed increase - it tracks CPI when CPI is lower.
• The 1% cap is the base rate; total bills exceed 1% legally via bonds and special taxes.
• Refinancing or adding a co-owner spouse does not trigger reassessment; selling to a stranger does.

How Proposition 13 Shapes a Real Estate Transaction

Proposition 13 is not just a tax-policy footnote - it changes how agents counsel buyers and sellers. Because the buyer's tax bill resets to the purchase price while the seller's was frozen at a decades-old base, the two parties often see wildly different annual tax numbers for the same house. An agent who quotes the seller's current tax bill to a buyer commits a serious disclosure error: the buyer's bill after reassessment may be three to five times higher.

A Concrete Counseling Scenario

A seller bought in 1995 for $250,000 and now pays about $3,400 a year on a roughly $340,000 factored value. The listing sells for $1,100,000. The buyer's new base year value is $1,100,000, producing a general ad valorem tax of about $11,000 before bonds and Mello-Roos. The agent must:

1. Disclose the buyer's anticipated tax, not the seller's frozen amount.
2. Flag that the lender's initial impound estimate may be built on the old, low figure, so the escrow account will be short once the county catches up.
3. Prepare the buyer for the supplemental bill covered in Section 4.3, which bridges the gap until the regular roll updates.

The Lien Date and the Tax Calendar

The lien date is January 1 - the moment ownership and value are fixed for the coming fiscal year. Regular secured bills are then paid in two installments:

The mnemonic "No Darn Fooling Around" (November, December, February, April) captures the four key dates - a classic DRE exam memory aid.

Exam Logistics Reminder

This material appears on the DRE salesperson exam: 150 multiple-choice questions, 3 hours, 70% (105 correct) to pass, administered by the California Department of Real Estate at a handful of state testing centers. The broker exam runs 200 questions in 4 hours at 75%. Property-tax mechanics fall under the "Practice of Real Estate and Disclosures" and "Property Valuation" content areas, so expect both concept and arithmetic questions drawn from this chapter.