California funds its state government mainly through three big taxes: the personal income tax, the sales and use tax, and the corporation tax. So when people ask how California makes money, the short answer is that the personal income tax alone brings in roughly half of General Fund revenue, sales and corporate taxes supply most of the rest, and a separate layer of federal grants, property taxes, fuel taxes, and dedicated fees pays for specific programs outside the General Fund. The mix leans heavily on what high earners make in any given year, which is why the state’s finances rise and fall with the stock market.
Personal Income Tax
The personal income tax is California’s single largest source of money. It runs on a progressive structure with ten brackets, starting at 1% on the first dollar of taxable income and climbing to 12.3% on income above roughly $743,000 for single filers. A separate 1% surcharge under the Mental Health Services Act pushes the effective top rate to 13.3% on taxable income above $1 million, the highest state-level income tax rate in the country.1New York Codes, Rules and Regulations. 18 CA ADC 17951-1 – Gross Income of Nonresidents
A relatively small group of high earners supplies a large share of this revenue, and their income is tied heavily to capital gains, stock options, and performance bonuses. When markets boom, the state treasury fills up fast. When markets drop, California can face sudden multi-billion-dollar shortfalls. That concentration makes the income tax both the engine and the vulnerability of the state’s fiscal system.
Most wage earners pay through employer withholding. People with substantial investment or self-employment income send quarterly estimated payments to the Franchise Tax Board.
Sales and Use Tax
Sales tax is California’s second-largest General Fund contributor. The state imposes a base rate of 7.25% on most retail sales of physical goods, from electronics and furniture to clothing and certain prepared foods.2Justia Law. California Revenue and Taxation Code Article 1 – Imposition of Tax That base already contains a 1.25% slice earmarked for local governments statewide, so the share actually flowing to the state’s General Fund is smaller than the number on your receipt. Cities and counties then add their own district taxes, ranging from zero to over 5%. Most Californians pay somewhere between 7.25% and about 10.75% at the register.
Not everything is taxed. Groceries bought for home consumption, prescription medicine, and certain medical devices are exempt.3CA.gov. What Is Taxable? Prepared restaurant food generally is taxable, which trips people up.
The use tax backs up the sales tax. If you buy a taxable item from an out-of-state seller and no sales tax is collected, you owe use tax at the same combined rate. Since the U.S. Supreme Court’s 2018 decision in South Dakota v. Wayfair, California has required out-of-state retailers with more than $500,000 in California sales during the current or prior calendar year to register with the California Department of Tax and Fee Administration and collect use tax automatically.4California Department of Tax and Fee Administration. Frequently Asked Questions – Use Tax Collection Requirements That threshold counts total sales of tangible goods, including nontaxable ones like sales for resale.
Corporation Tax
California taxes most businesses operating in the state through a combination of franchise and income taxes. C-corporations pay 8.84% of net income earned from California activities. S-corporations pay a lower rate of 1.5% on their California net income, and the individual shareholders also pay personal income tax on their share of the company’s earnings. Banks and financial corporations pay at a higher rate than standard corporations to reflect industry-specific regulatory treatment.5California Legislative Information. California Revenue and Taxation Code 23151.1
Even unprofitable corporations owe a minimum franchise tax of $800 per year.6California Legislative Information. Revenue and Taxation Code Section 23151.1 Corporations that incorporate or qualify to do business in California on or after January 1, 2020 are exempt from the $800 minimum in their first taxable year. A corporation is also exempt if it conducted no business in the state and its tax year lasted 15 days or fewer.7Franchise Tax Board. Corporations
Property Taxes Stay Local
Property taxes raise enormous sums in California, but almost none of that money reaches the state’s General Fund. It stays local, funding school districts, counties, cities, and special districts within the county where it is collected. The state mainly sets the rules under which local governments collect.
Those rules trace back to Proposition 13, the 1978 ballot measure that reshaped California public finance. Prop 13 caps the general property tax levy at 1% of a property’s assessed value and limits annual assessment increases to no more than 2%, regardless of how fast the market moves.8Assessor. Proposition 13 The assessed value resets to fair market value only when the property changes hands or undergoes new construction, which is why two neighbors with identical homes can pay wildly different tax bills if one bought decades ago and the other bought last year.
Schools receive the largest share of property tax collections, followed by counties, cities, and special districts. Prop 13 shifted allocation authority to the state, so the legislature decides how property tax revenue is divided among local agencies each year. Voter-approved bonds for schools and infrastructure can add small increments on top of the 1% base rate, which is why actual property tax bills often exceed that floor slightly.
Federal Dollars
Federal transfers make up a huge share of California’s total spending when measured across all funds. Most of this money arrives as grants restricted to specific federally approved programs, especially health care. Medi-Cal, the state’s Medicaid program, covers nearly 15 million low-income residents and runs a total budget of close to $200 billion, roughly 40% of all state spending across every fund source. More than half of that comes from federal dollars.9Legislative Analyst’s Office. The 2026-27 Budget: Medi-Cal Fiscal Outlook
General Fund spending on Medi-Cal alone reached $44.9 billion in the 2025â26 fiscal year, an all-time high that works out to about 20% of overall General Fund expenditures. That share has been climbing from a historical norm closer to 15%.9Legislative Analyst’s Office. The 2026-27 Budget: Medi-Cal Fiscal Outlook Social services, transportation, disaster relief, and education also draw substantial federal contributions. These dollars generally do not enter the General Fund, but they are woven into the state’s overall budget and reduce what would otherwise be an even larger burden on state-generated tax revenue.
Special Fund Revenue
California keeps dozens of special funds, accounts where revenue is legally restricted to a specific purpose and cannot be shifted to general government operations. The biggest categories are fuel taxes, vehicle fees, and lottery proceeds.
Fuel Excise Taxes
Gasoline and diesel taxes are dedicated almost entirely to transportation infrastructure and public transit. For the period from July 2025 through June 2026, the state excise tax on gasoline is 61.2 cents per gallon and the diesel excise tax is 46.6 cents per gallon.10California Department of Tax and Fee Administration. Sales Tax Rates for Fuels These rates are adjusted periodically. Because the revenue is earmarked for roads, bridges, and transit, it functions as a user fee: the people buying fuel are directly funding the infrastructure they drive on.
Vehicle Registration Fees
Fees collected when Californians register their vehicles flow into accounts used for road maintenance, highway patrol operations, and environmental programs.11Justia. California Vehicle Code 9250-9271 – Article 2 Registration Fees Like fuel taxes, these fees create a direct link between the people using the road system and the money that keeps it running.
California Lottery
Lottery proceeds are constitutionally required to supplement public education funding. In the 2021â22 fiscal year, the most recent year with final figures, total Kâ12 lottery payments were approximately $1.65 billion, or about $291 per student based on average daily attendance.12California Department of Education. Lottery – CalEdFacts That is a lot of money in absolute terms, but it represents a small fraction of overall education spending. The lottery was never designed as a primary funding source for schools; it supplements what the state already provides.
Tobacco and Alcohol Taxes
Excise taxes on cigarettes, other tobacco products, and alcoholic beverages also flow into special funds dedicated to public health programs, law enforcement, and related services. These streams are smaller than fuel and vehicle revenue but provide stable, recurring funding for long-term public health initiatives.
Why California’s Revenue Swings Year to Year
The structure above explains why California’s budget picture can look dramatically different from one year to the next. Because the state leans so heavily on the earnings of high-income residents, revenue moves sharply with the stock market and the broader economy. A strong year for capital gains and bonuses fills the General Fund; a weak year empties it. Sales tax tracks consumer spending, which also softens in downturns. The property tax base, by contrast, is stable thanks to Prop 13’s assessment limits, but that money is locked into local uses. Federal grants and special funds are steady for their designated programs but cannot be redirected to cover General Fund gaps. The result is a state that collects a lot of money overall, yet remains unusually exposed when its wealthiest taxpayers have a bad year.