Living in the Bay Area means paying California’s top-bracket income tax of up to 13.3%, property tax of roughly 1% of your home’s purchase price under Proposition 13, sales tax between 8.625% and 10.75% depending on the city, and a handful of local parcel and transfer taxes layered on top. California has no state estate or inheritance tax. The sections below walk through each of these, with the rates, the deadlines, and the rules that most often trip people up.
California Income Tax
California’s personal income tax is progressive, with ten brackets starting at 1% and reaching 12.3% at the top. For 2025, single filers hit the 12.3% rate on taxable income above $742,953; for joint filers, the threshold is $1,485,906.1State of California Franchise Tax Board. 2025 California Tax Rate Schedules An additional 1% mental health services surcharge, created by Proposition 63 in 2004, applies to every dollar of taxable income above $1 million. That brings the effective top rate to 13.3%. The bracket thresholds adjust each year for inflation.
Residents are taxed on income from anywhere in the world, not just California sources. Consulting fees from a New York client, dividends from a foreign brokerage, rental income from an out-of-state property: all of it goes on the California return. Anyone who spends more than nine months of the tax year in the state is presumed to be a resident, though the presumption can be rebutted with evidence the stay is temporary.2California Legislative Information. California Revenue and Taxation Code 17016 Residents file Form 540 with the Franchise Tax Board.3State of California Franchise Tax Board. What Form You Should File
Capital Gains and Stock Compensation
California does not give capital gains a preferential rate. All gains, long-term or short, are taxed as ordinary income.4State of California Franchise Tax Board. Capital Gains and Losses When you exercise stock options, sell vested RSUs, or cash out equity after an acquisition, the gain stacks on top of your salary and lands in whichever marginal bracket your total income reaches. An engineer earning $400,000 in base pay who sells $500,000 in appreciated stock pushes much of that gain into the 12.3% bracket, plus the 1% surcharge on anything above $1 million.
Combined with federal capital gains tax, the marginal rate on parts of a large stock sale can exceed 50%. Timing matters. Spreading sales across tax years, tracking how California sources income from options exercised after you leave the state, and coordinating with federal deductions can shift the total bill meaningfully.
Property Tax Under Proposition 13
Property tax in the Bay Area is governed by Article XIII A of the California Constitution, better known as Proposition 13. The base rate is capped at 1% of the property’s assessed value. The assessed value is set when you buy, and it can rise by no more than 2% per year afterward, no matter what happens to market prices.5Justia. California Constitution Article XIII A – Tax Limitation
Over time, the gap between assessed and market value can grow large. A home bought in Palo Alto for $300,000 in 1995 might carry an assessed value around $550,000 today while selling for $3 million or more. A neighbor who bought recently at $3 million pays roughly five times the property tax on an equivalent house.
When a property changes hands, the county assessor resets the assessed value to the new purchase price. A $1,500,000 purchase produces a base annual tax of about $15,000 before local add-ons. If market prices drop and your home’s current value falls below its assessed value, you may qualify for a temporary reduction under Proposition 8.6California Department of Tax and Fee Administration. Decline in Value – Proposition 8 Assessors are supposed to catch these automatically, but filing a decline-in-value application with the county assessor’s office ensures the review happens. The assessment reverts to the original base value with 2% annual increases once prices recover.
Supplemental Tax Bills
New buyers often get caught off guard by supplemental property tax bills. When you close on a home, the assessor calculates the difference between the prior assessed value and your purchase price, then issues a separate bill for the prorated portion of the current fiscal year.7California Board of Equalization. Supplemental Assessment Close escrow between January and May and you may get two supplemental bills: one for the remainder of the current fiscal year and one for the following year. Both arrive separately from your regular tax bill, and both have their own deadlines. Mortgage lenders do not always pay supplemental bills from escrow, so check your closing documents.
Payment Deadlines
Regular property taxes come in two installments. The first is due November 1 and becomes delinquent after December 10. The second is due February 1 and becomes delinquent after April 10.8California Tax Service Center. Property Tax Function Important Dates Missing either date triggers an automatic penalty. The same applies to supplemental bills, and confusion between you and your lender about who pays is not an accepted excuse.7California Board of Equalization. Supplemental Assessment
Passing Property to Children Under Proposition 19
Before February 2021, parents could transfer any property to their children and keep the existing low Proposition 13 assessed value, including rentals and vacation homes. Proposition 19 narrowed this. The reassessment exclusion now applies only to a family home or family farm, and only if the child uses the property as a primary residence within one year of the transfer.9California Board of Equalization. Proposition 19 Fact Sheet
Even when the child moves in, there is a cap. The excluded amount equals the existing assessed value plus an inflation-adjusted figure, currently $1,044,586 for transfers between February 16, 2025, and February 15, 2027.9California Board of Equalization. Proposition 19 Fact Sheet Market value above that combined total gets added to the child’s tax base. The child must also file for a homeowners’ exemption within one year of the transfer to lock in the exclusion from the transfer date; filing later means the exclusion starts from the year the claim is filed, not the transfer.
Spousal transfers are still fully excluded from reassessment regardless of property type. To claim the parent-child exclusion, file Form BOE-19-P with the county assessor within three years of the transfer.10California State Board of Equalization. Property Tax Savings – Transfers Between Parents and Children Miss that window and the property is reassessed at current market value.
Sales Tax by City
California’s statewide base sales tax is 7.25%.11California Department of Tax and Fee Administration. California City and County Sales and Use Tax Rate Information Cities and counties add voter-approved district taxes on top, funding transportation, housing, and other local priorities. Combined rates in the Bay Area run from 8.625% in San Francisco to 10.75% in Oakland, with San Jose at 9.375%.12California Department of Tax and Fee Administration. California City and County Sales and Use Tax Rates Rates change when new measures pass or old ones expire, and they vary across short distances, so the register tape depends on which side of a city line you’re standing on.
Use tax covers the gap for out-of-state purchases. If a retailer doesn’t collect California sales tax, you owe the equivalent use tax to the state, typically reported on a line of your annual income tax return.
Transfer Taxes When You Buy or Sell
Every real property transfer in California triggers a documentary transfer tax. The standard county rate is $1.10 per $1,000 of sale price.13San Mateo County Assessor-County Clerk-Recorder and Elections. Documentary Transfer Tax On a $1,500,000 sale, that’s $1,650 at the county level. Several Bay Area cities add their own transfer tax on top, and some use tiered structures that rise sharply at the high end.
San Francisco has the most aggressive tiered schedule in the region:
- Up to $250,000: 0.5%
- $250,001 to $1 million: 0.68%
- $1 million to $5 million: 0.75%
- $5 million to $10 million: 2.25%
- $10 million to $25 million: 5.5%
- Over $25 million: 6%
A $20 million commercial building sale in San Francisco generates $1.1 million in city transfer tax alone. Berkeley and San Jose also impose city-level transfer taxes, though at lower rates than San Francisco’s top tiers.
Who pays is negotiable. Custom in most Bay Area counties is for the seller to pay the county portion, while the city-level tax is often split or assigned during negotiations. The full payment must be submitted before the county recorder will accept the deed. A missing or incorrect amount means the deed is rejected and the sale cannot close.
Parcel Taxes on Your Bill
Your property tax bill carries charges beyond the 1% Proposition 13 base. Parcel taxes are flat-rate levies funding specific services such as public schools, libraries, and fire protection. They are not based on property value; every parcel in the district pays the same amount. Classified as special taxes under the California Constitution, each one needs two-thirds voter approval to pass.14State Controller’s Office. Parcel Tax Definition In many Bay Area neighborhoods, several stack up: a school district parcel tax, a community college district tax, a park maintenance district tax, and so on. They appear on the same bill as your regular property taxes and share the November and April deadlines.
Federal SALT Deduction Cap
Bay Area taxpayers who itemize federal returns run into the state and local tax deduction cap. For 2026, the maximum SALT deduction is $40,000 for most filers and $20,000 for married individuals filing separately. The deduction phases down above certain income thresholds but cannot drop below $10,000.15Internal Revenue Service. Topic No 503 Deductible Taxes For many Bay Area households, California income tax and property tax together already exceed $40,000, so a portion of those payments produces no federal benefit.
Estate and Inheritance Tax
California imposes no state estate tax and no inheritance tax. The state’s estate tax was eliminated effective January 1, 2005.16California State Controller’s Office. California Estate Tax Inheriting property or assets from a Bay Area decedent triggers no California tax on the recipient.
Federal estate tax still applies, but at a high threshold. Under legislation signed in 2025, the federal estate tax exemption is $15 million per individual, or $30 million for a married couple using portability, and was made permanent.17Internal Revenue Service. Estate Tax Estates below the exemption owe nothing. Above it, the federal rate starts at 18% and climbs to 40% on the largest amounts. Given Bay Area home values, equity compensation, and retirement balances, it’s worth tallying your estate every few years to see whether it approaches the threshold.