California Property Taxes for Investment Properties

How California Property Tax Works Under Proposition 13

California property tax is an annual tax on the assessed value of real estate. Under Proposition 13, the voter-approved constitutional amendment passed in 1978, the general tax rate is capped at 1% of assessed value, plus any additional amount needed to fund local voter-approved bonds and overrides. That means the effective rate is usually a little above 1%, and it varies by county and by local measures.

The assessed value is the number that matters. When a property changes hands, the county assessor treats the sale as a change in ownership and reassesses the property to its current market value, which in a typical purchase is the price you paid. That becomes the property's new base year value for both the land and the improvements.

The 2% annual cap

After that reassessment, the assessed value cannot rise by more than 2% per year, or by the rate of inflation if that is lower, no matter how fast the market climbs. Over a long holding period this is what keeps California property tax from growing with the market, and it is the reason two identical neighboring properties can carry very different tax bills.

What Happens to Your Tax Bill When You Buy

The practical effect for investors is simple: buying a property almost always resets the tax base to today's value. If the seller bought years ago, their annual bill reflected a much lower base year value, so the taxes you will actually pay are typically higher than what the seller's old bill showed. Never size a deal off the seller's current tax bill without checking what reassessment to your purchase price will do.

One detail worth knowing: the homeowner's exemption, a $7,000 reduction in assessed value, applies to a principal residence only. A rental you buy as an investment does not qualify, so do not factor it into your estimate.

Plan for the Supplemental Tax Bill

Because reassessment happens mid-fiscal-year, the county does not simply fold the new value into the next annual bill. The assessor issues a supplemental assessment for the difference between the new assessed value and the old one, prorated from the first day of the month after you close through the end of the fiscal year on June 30.

Two practical points investors miss. First, if you close between January 1 and May 31, you can receive a second supplemental bill covering the entire following fiscal year, because the tax roll for that year was already set on January 1. Second, supplemental bills are separate from the annual bill and are sent directly to the owner; they are not collected through a mortgage impound account. Expect them to arrive a few months after closing, and keep reserves to cover them.

When Your Property Tax Bills Are Due

The annual secured property tax bill is paid in two installments each fiscal year. The first is due November 1 and becomes delinquent if unpaid by December 10; the second is due February 1 and becomes delinquent if unpaid by April 10. A 10% penalty applies to any installment paid after its delinquency date, and an additional cost is added to an unpaid second installment.

For an investor these dates matter twice: once for the property you own, and once for cash-flow planning, because property tax is a fixed obligation that arrives whether the unit is occupied or vacant. Build it into your monthly operating budget instead of treating it as a surprise. The holding-cost calculator is a useful place to see what the tax adds to your monthly cost of carrying a property.

Property Taxes Are a Deductible Rental Expense

Property taxes on a rental are a deductible business expense. You report them on Schedule E of your federal return as part of your rental expenses, which reduces the rental income you are taxed on, and you do not need to itemize to claim them.

The common confusion is with the state and local tax (SALT) cap. That cap applies to personal deductions, such as property taxes on your own home, not to the property taxes on a rental you hold for income. On an investment property, the full property tax is a rental expense with no dollar cap.

Mixed use changes the answer

If you also use the property personally, the taxes must be allocated between rental and personal use, and only the rental portion belongs on Schedule E. And if personal use pushes the property over the IRS threshold for treatment as a personal residence, the rules change again. Keep clean records of the days used, and confirm your situation with a qualified tax professional.

Inheriting or Transferring an Investment Property: Proposition 19

Inheritance changed for California property in a way that matters to investors. Under Proposition 19, which took effect in February 2021, inherited rental, investment, and vacation properties no longer qualify for the old parent-child exclusion, so they are fully reassessed to current market value when they transfer. That can mean a significant tax increase on a property an heir keeps as a rental.

An inherited primary residence can still qualify for a narrower exclusion, but only if the home was the parent's principal residence, the child makes it their own primary residence within a year of the transfer, and the right claim is filed with the county assessor. None of that applies to a rental you are keeping as an investment.

The inherited investment property guide covers basis, authority, and the decision to keep or sell in more depth.

Budgeting Property Taxes Into Your Investment Numbers

The single most common mistake is using the seller's current tax bill in a cash-flow model. Because reassessment usually raises the bill to your purchase price, your real annual property tax can be materially higher than the seller's. Estimate property tax as about 1% of your purchase price plus any additional local voter-approved rates, confirm the effective rate in the property's county, and use that figure in your model.

• Reassessed property tax: about 1% of the purchase price, plus any local voter-approved rates, confirmed in the property's county
• The 2% annual cap on assessed value growth after reassessment
• A supplemental bill in the first year, prorated from the month after closing through June 30
• Two annual installments each fiscal year, delinquent after December 10 and April 10
• The full property tax as a deductible rental expense on Schedule E

Enter the reassessed tax as an operating expense in the rental property calculator to see its effect on cash flow and cap rate, and pair it with the holding-cost calculator when you are estimating the cost of carrying a property before it is rented.

Property tax also belongs in your vacancy and reserve planning, because it must be paid every year regardless of whether the property produces rent. The investment property expenses guide walks through each cost category, and the operating expenses guide explains how each one feeds your returns.

A Quick Example With Round Numbers

These are made-up sample numbers for illustration only, not a quote, a market figure, or a projection for any real property. Suppose you buy a California rental for $700,000 and the county reassesses it to that purchase price. At an assumed effective rate of about 1.1%, your annual bill is roughly $7,700, or about $642 a month. Add that to the operating expenses you model, remember that a supplemental bill can arrive separately in the first year, and your cash-flow picture is complete.

Questions about how taxes and the rest of the numbers fit a specific property? The investment property evaluation guide walks through income, expenses, financing, and returns in order, and the California Investor hub collects all of the calculators and guides in one place.