California taxes capital gains at some of the highest rates in the country, reaching up to 13.3% at the state level alone. Whether you sold a rental property, exercised stock options, or liquidated an investment portfolio, understanding how California capital gains tax works is essential to keeping more of what you earn.

Schedule a consultation with Clear Peak Accounting to build a tax strategy tailored to your capital gains situation.

Unlike the federal government, California does not offer reduced rates for long-term capital gains. Every dollar of profit from the sale of an asset is taxed as ordinary income. That means your capital gains stack on top of your salary, business income, and other earnings, potentially pushing you into the state’s highest tax bracket. For high earners in Los Angeles, the Bay Area, and across the state, this creates a significant tax liability that requires proactive planning.

How California Capital Gains Tax Works

Capital gains are the profits you earn when you sell an asset for more than you paid for it. The difference between your purchase price (called your cost basis) and the sale price is your capital gain. California treats these gains as regular income, which means they are added to your total taxable income for the year and taxed at the same progressive rates.

At the federal level, the IRS distinguishes between short-term gains (assets held less than one year) and long-term gains (assets held more than one year). Long-term gains receive preferential federal rates of 0%, 15%, or 20%, depending on your income. Short-term gains are taxed at your ordinary federal income tax rate.

California makes no such distinction. Short-term and long-term capital gains are both taxed as ordinary income at rates ranging from 1% to 13.3%. If you are a high-income earner, your capital gains will likely be taxed at the top rate. This means that even if you held an investment for decades, California taxes the profit at the same rate as if you held it for a single month.

California Capital Gains Tax Rates for 2025-2026

California’s income tax rates apply directly to capital gains. Here are the current brackets for single filers:

Taxable Income	Tax Rate
$0 – $10,412	1%
$10,413 – $24,684	2%
$24,685 – $38,959	4%
$38,960 – $54,081	6%
$54,082 – $68,350	8%
$68,351 – $349,137	9.3%
$349,138 – $418,961	10.3%
$418,962 – $698,271	11.3%
$698,272 – $1,000,000	12.3%
Over $1,000,000	13.3%

The 13.3% top rate includes a 1% Mental Health Services Tax surcharge that applies to taxable income exceeding $1 million. For married couples filing jointly, the brackets are approximately doubled. Because capital gains are stacked on top of all other income, a large sale in a single year can easily push you into a higher bracket.

Federal vs. State Capital Gains: The Combined Tax Burden

California residents pay both federal and state capital gains tax. The combined rates can be significant. Consider this example for a single filer earning $300,000 in salary who sells stock for a $200,000 long-term gain:

Federal tax on the gain: 15% long-term rate = $30,000
Net Investment Income Tax (NIIT): 3.8% on the gain = $7,600
California state tax on the gain: Taxed as ordinary income at approximately 9.3% to 11.3%, depending on total income = roughly $20,000 to $22,600
Combined tax on the $200,000 gain: Approximately $57,600 to $60,200, or about 29% to 30% of the gain

For taxpayers with income above $1 million, the combined federal and California rate on long-term capital gains can exceed 37%. That is a substantial portion of your investment returns going to taxes, which makes proactive tax planning strategies critical.

Primary Residence Exemption in California

One of the most valuable tax breaks available to homeowners is the primary residence exclusion. Under both federal and California law, you can exclude up to $250,000 in capital gains from the sale of your primary residence if you are a single filer, or up to $500,000 if you are married filing jointly.

To qualify, you must meet two tests:

Ownership test: You owned the home for at least two of the five years before the sale
Use test: You used the home as your primary residence for at least two of the five years before the sale

For married couples, only one spouse needs to meet the ownership test, but both must meet the use test to claim the full $500,000 exclusion. Any gain above these thresholds is subject to both federal and California capital gains tax.

Given California’s real estate values, many homeowners in Los Angeles, San Francisco, and San Diego see gains that exceed the exclusion amounts. A home purchased 15 years ago for $600,000 that sells for $1.5 million today produces a $900,000 gain. After the $500,000 exclusion for a married couple, the remaining $400,000 is taxable at both the federal and state level.

Partial Exclusion for Special Circumstances

If you do not meet the full two-year residency requirement, you may still qualify for a partial exclusion if you sold due to a change in employment, health reasons, or certain other unforeseen circumstances. The partial exclusion is calculated based on the fraction of the two-year period you met the requirements.

How Capital Gains Tax Applies to Real Estate Investors

Real estate investors in California face additional considerations beyond the primary residence exclusion. Investment properties, rental homes, and commercial real estate are all subject to capital gains tax when sold, with no automatic exclusion.

Key factors for California real estate investors include:

Depreciation recapture: If you claimed depreciation on a rental property, the IRS taxes recaptured depreciation at a flat 25% federal rate, plus California taxes it as ordinary income
Cost basis adjustments: Improvements to the property increase your cost basis, reducing your taxable gain. Keep records of renovations, additions, and significant repairs
Holding period: While California taxes short-term and long-term gains identically, the federal distinction still matters. Holding investment property for more than one year qualifies for the lower federal long-term rate

Looking to minimize your tax burden on a property sale? Connect with our real estate tax team for personalized planning.

1031 Exchanges: Deferring Capital Gains on Investment Property

A 1031 exchange (also known as a like-kind exchange) allows real estate investors to defer capital gains tax by reinvesting the proceeds from one investment property into another. Both federal and California tax law recognize 1031 exchanges, though California adds a reporting requirement.

To qualify for a 1031 exchange:

The properties must be held for investment or business use (not personal residences)
You must identify a replacement property within 45 days of the sale
The purchase of the replacement property must close within 180 days
The replacement property must be of equal or greater value to fully defer the gain
A qualified intermediary must hold the funds during the exchange period

California requires additional reporting on Form 593 when real estate is sold by a non-resident or when real estate exceeds certain thresholds. Additionally, if you complete a 1031 exchange and later move to another state before selling the replacement property, California may still claim taxes on the deferred gain through its clawback provisions. This is a critical detail that investors who relocate outside California need to address with a CPA before the move.

Stock Options and Equity Compensation

Tech professionals and executives in California frequently receive equity compensation in the form of stock options (ISOs and NSOs), restricted stock units (RSUs), and employee stock purchase plan (ESPP) shares. Each type has distinct capital gains implications.

Incentive Stock Options (ISOs)

When you exercise ISOs, you do not owe ordinary income tax at the time of exercise (though the bargain element triggers the Alternative Minimum Tax, or AMT). If you hold the shares for at least one year after exercise and two years after the grant date, any subsequent gain is taxed as a long-term capital gain at the federal level. California, however, still taxes the gain as ordinary income.

Non-Qualified Stock Options (NSOs)

The spread between the exercise price and the fair market value at exercise is taxed as ordinary income for both federal and California purposes. Any additional gain when you later sell the shares is a capital gain, subject to the rates discussed above.

Restricted Stock Units (RSUs)

RSUs are taxed as ordinary income when they vest. Any subsequent appreciation between the vesting date price and the sale price is a capital gain. If you hold the shares for more than one year after vesting before selling, the gain qualifies for preferential federal long-term rates, but California still taxes it as ordinary income. Learn more in our breakdown of how RSUs are taxed.

Managing equity compensation requires careful coordination between exercise timing, holding periods, and estimated tax payments. Our article on ISO vs. NSO tax treatment covers the specifics of each option type.

Qualified Small Business Stock (QSBS) Exclusion

Section 1202 of the Internal Revenue Code allows eligible taxpayers to exclude up to 100% of the gain from the sale of qualified small business stock, subject to certain limitations. California partially conforms to this provision but limits the exclusion to 50% of the gain.

To qualify for the QSBS exclusion:

The stock must be in a C corporation with gross assets of $50 million or less at the time of issuance
You must have acquired the stock at original issuance (not on the secondary market)
You must hold the stock for at least five years
The corporation must be an active business in a qualifying industry (most tech companies qualify, but certain professional services, financial, and hospitality businesses do not)

The federal exclusion can eliminate up to $10 million in gains (or 10 times your basis in the stock, whichever is greater). California’s 50% exclusion means you still owe state tax on half the gain. For startup founders and early employees, this can represent a significant tax savings at the federal level, but the California tax bill on a large QSBS sale remains substantial.

Strategies to Reduce California Capital Gains Tax

While you cannot avoid California capital gains tax entirely, several strategies can help reduce or defer your liability:

Tax-Loss Harvesting

Selling investments at a loss offsets capital gains dollar for dollar. If your losses exceed your gains, you can deduct up to $3,000 of net losses against ordinary income each year, with remaining losses carried forward to future years. This applies to both federal and California taxes.

Installment Sales

Spreading the gain across multiple tax years through an installment sale can keep your total income in lower tax brackets. Instead of recognizing the full gain in one year, you report a portion each year as you receive payments. This approach works well for high-value real estate and business sales.

Charitable Giving with Appreciated Assets

Donating appreciated securities or real estate to a qualified charity allows you to deduct the full fair market value while avoiding capital gains tax on the appreciation. A donor-advised fund is a practical vehicle for making charitable contributions with appreciated stock.

Opportunity Zone Investments

Reinvesting capital gains into a Qualified Opportunity Zone Fund can defer and potentially reduce your tax liability. While the original tax deferral benefits have phased out for new investments, the permanent benefit remains: if you hold the Opportunity Zone investment for at least 10 years, any appreciation in the new investment is tax-free at the federal level. California conforms to this provision.

Timing of Asset Sales

If you anticipate a lower-income year (such as retirement, a sabbatical, or a business downturn), timing the sale of appreciated assets for that year can result in a lower overall tax rate. Because California taxes capital gains as ordinary income, your rate depends entirely on your total taxable income for the year.

Maximize Your Cost Basis

Ensure you account for all adjustments to your cost basis. For real estate, this includes closing costs, capital improvements, and certain selling expenses. For stock, this includes reinvested dividends, stock splits, and transaction fees. A higher cost basis means a smaller taxable gain.

Talk to a Clear Peak CPA about which strategies apply to your situation and how much you could save.

California Estimated Tax Payments on Capital Gains

If you realize a significant capital gain during the year, California expects you to make estimated tax payments rather than waiting until you file your return. Failing to make timely estimated payments can result in penalties and interest charges.

California estimated tax payments are due quarterly: April 15, June 15, September 15, and January 15 of the following year. If a large gain occurs mid-year, you may need to adjust your estimated payments for the remaining quarters. The state uses an annualized income installment method to calculate penalties, which can provide relief if the gain occurred late in the year.

Understanding quarterly estimated tax payments in California is essential for avoiding unnecessary penalties when you sell a property, exercise stock options, or liquidate a significant investment.

When to Work with a CPA on Capital Gains

Capital gains situations that benefit most from professional CPA involvement include:

Real estate sales exceeding the primary residence exclusion: Calculating accurate cost basis, evaluating 1031 exchange options, and coordinating depreciation recapture
Stock option exercises: Timing ISO exercises to manage AMT exposure while optimizing federal capital gains treatment
Large portfolio liquidations: Coordinating sales with tax-loss harvesting and charitable giving strategies
Business sales: Structuring the transaction as an asset sale vs. stock sale to optimize tax treatment
Multi-state situations: Determining how capital gains are allocated when you live in California but own property or have business interests in other states
Relocating out of California: Understanding California’s sourcing rules for deferred gains, installment sales, and clawback provisions

California’s lack of preferential capital gains rates means the stakes are higher for every transaction. A few thousand dollars invested in professional tax planning can save tens of thousands in unnecessary taxes.

Frequently Asked Questions About California Capital Gains Tax

How much are capital gains taxes in California?

California taxes capital gains at the same rates as ordinary income, ranging from 1% to 13.3%. Your effective rate depends on your total taxable income for the year, including all capital gains. High earners with income above $1 million pay the top rate of 13.3%, which includes a 1% Mental Health Services Tax surcharge.

Does California tax long-term capital gains differently than short-term?

No. California taxes both short-term and long-term capital gains as ordinary income. There is no preferential rate for assets held longer than one year at the state level. The federal government does provide lower rates for long-term gains, but California does not follow this distinction.

How can I avoid paying capital gains tax in California?

You cannot completely avoid California capital gains tax on most transactions. However, you can reduce or defer your liability through strategies like the primary residence exclusion (up to $250,000 or $500,000), 1031 exchanges for investment property, tax-loss harvesting, charitable donations of appreciated assets, and strategic timing of sales in lower-income years.

Do I pay California capital gains tax if I move to another state?

If you realized the capital gain while a California resident, you owe California tax on that gain regardless of where you move afterward. For deferred gains (such as from a 1031 exchange or installment sale), California may still claim taxes on those gains through clawback and sourcing rules, even after you establish residency in another state.

What is the capital gains tax on selling a home in California?

If the home is your primary residence and you meet the ownership and use tests, you can exclude up to $250,000 (single) or $500,000 (married filing jointly) from taxation. Any gain above those amounts is taxed as ordinary income by California (up to 13.3%) and at the federal long-term capital gains rate if you owned the home for more than one year.

Take Control of Your Capital Gains Tax Strategy

California’s capital gains tax rates are among the highest in the nation, and the state’s refusal to offer preferential long-term rates means that every sale carries a significant tax impact. Whether you are selling real estate, exercising stock options, or planning a business exit, the right strategy can save you thousands, or even hundreds of thousands, of dollars.

At Clear Peak Accounting, we help California individuals and business owners navigate complex capital gains situations with personalized tax planning. From 1031 exchanges to equity compensation strategies, our team builds plans that align with your financial goals while minimizing your tax exposure.

Contact Clear Peak Accounting today to start planning your capital gains strategy with a California CPA who understands the details.

California Capital Gains Tax Explained