Quarterly Taxes California 2026: What Freelancers & Gig Workers Need to Know

Quarterly taxes in California are estimated payments made throughout the year to cover your federal income tax, federal self-employment tax, and California state income tax.

 

If you earn income without automatic withholding, you are generally required to pay these taxes yourself. This guide explains who needs to pay, how it works, how to pay, and what to expect in California.

What Are Quarterly Taxes?

Quarterly taxes (also called estimated taxes) are payments made four times per year instead of paying everything at once.

They apply to income that is not subject to withholding, such as:

• freelance income
• business income
• gig work (Uber, DoorDash)
• online sales (Etsy, Amazon, Shopify)
• rental or Airbnb income
• content creation (YouTube, TikTok, affiliate income)

How Quarterly Taxes Work

Freelancers have two options for calculating estimated payments.

You can project your total income for the entire year, calculate the tax owed, and split it into four equal installments for the IRS and three installments for California. Or, if your income is harder to predict, you can calculate based on what you actually earned each quarter and pay accordingly.

Either way, make sure your estimate accounts for both income tax and self-employment tax, if applicable, and revisit your numbers each quarter to confirm you’re still on track.

The total tax you need to consider includes:

• federal income tax
• self-employment tax (approximately 15.3%)
• California state income tax

A note on the quarterly calculation method and California: If you calculate payments based on actual quarterly earnings rather than an annual projection, be aware that California’s payment schedule is front-loaded (30% is due in Q1 and 40% is due in Q2), meaning 70% of your estimated annual tax is due by June 15.

This works well if your income is relatively even throughout the year. However, if your income is seasonal or back-loaded meaning you earn more in Q3 and Q4 paying only on what you actually earned each quarter may leave you short of that 70% threshold by June 15, potentially triggering underpayment penalties.

For freelancers with uneven income, the prior year safe harbor method is generally the safer approach for California. This is covered in detail later in this article.

Who Needs to Pay Quarterly Taxes?

You likely need to pay quarterly taxes if you:

• are self-employed or freelance
• work as a gig driver (Uber, Lyft, DoorDash)
• sell products online (Etsy, Amazon, Shopify)
• earn income from content creation or affiliate marketing
• rent out property or run Airbnb
• have investment income without withholding

Who may not need to pay quarterly taxes?

Not everyone with freelance or side income is required to make quarterly payments. You may not need to pay if:

• You expect to owe less than $1,000 in federal tax (or less than $500 in California state tax) after subtracting withholding and credits
• You had zero tax liability in the prior year
• You have a W-2 job and can increase your withholding via Form W-4 to cover the additional tax from your side income. This would eliminate the need for separate quarterly payments altogether.

California State Tax Explained

California has a progressive income tax system, with rates ranging from 1% up to 13.3%.

A progressive tax system means your entire income isn’t taxed at one flat rate. Instead, different portions of your income are taxed at increasing rates as you earn more.

For example, your first dollars of taxable income are taxed at just 1%, with the rate gradually increasing as your income climbs.

For California freelancers, this has a few important implications:

• Because no employer is withholding taxes from your paychecks, you’re responsible for estimating and paying your state taxes throughout the year just like at the federal level.
• California requires estimated tax payments if you expect to owe $500 or more in state tax after withholding and credits. This is a lower threshold than the federal requirement of $1,000, meaning you may owe California estimated payments even in years when you don’t owe federal ones.
• California’s estimated tax payments don’t follow the same schedule as federal payments, so it’s important to track both deadlines separately.

Examples and Step-by-Step Calculation

The following examples walk through how to calculate both federal and California estimated tax payments. Federal calculations are shown first, followed by California state calculations for each scenario.

Important: These examples are for illustrative purposes only. Tax calculations involve many variables specific to your situation.

 

Scenario 1: Freelancer Earning $100,000 with $20,000 in Expenses

Assumptions: Single filer, standard deduction, annual calculation method. No other sources of income.

Gross freelance income	$100,000
Business expenses	-$20,000
Net self-employment income	$80,000

Federal Calculations

Step 1: Calculate self-employment (SE) tax:

• $80,000 × 92.35% = $73,880 (net earnings subject to self-employment tax)
• $73,880 × 15.3% = $11,304 SE tax
• Deductible half of SE tax: $11,304 ÷ 2 = $5,652

Step 2: Calculate federal income tax:

• $80,000 − $5,652 (SE deduction) − $16,100 (2026 standard deduction) = $58,248 taxable income
• Apply 2026 tax brackets:
• 10% on first $12,400 = $1,240
• 12% on $12,401 → $50,400 = $37,999 × 12% = $4,560
• 22% on $50,401 → $58,248 = $7,847 × 22% = $1,726
• Total federal income tax: $7,526

Step 3: Calculate total federal estimated tax:

• $11,304 + $7,526 = $18,830

Step 4: Calculate quarterly federal payment:

• $18,830 ÷ 4 = ≈ $4,708 per quarter

California State Calculations (Note: 2025 tax brackets used. 2026 tax brackets not available at time of publishing)

Step 1: Calculate California taxable income:

• Net self-employment income: $80,000
• Less CA standard deduction for 2026: $5,706
• Less deductible half of federal SE tax: $5,652
• California taxable income: $68,642

Step 2: Apply California tax brackets:

• 1% on first $11,078 = $111
• 2% on $11,079 → $26,263 = $15,184 × 2% = $304
• 4% on $26,264 → $41,451 = $15,187 × 4% = $607
• 6% on $41,452 → $57,541 = $16,089 × 6% = $965
• 8% on $57,542 → $68,642 = $11,100 × 8% = $888
• Total CA income tax: $2,875

Step 3: Calculate California quarterly payments:

• Q1 (30%): $2,875 × 30% = $863
• Q2 (40%): $2,875 × 40% = $1,150
• Q3 (0%): $0
• Q4 (30%): $2,875 × 30% = $862

Annual Tax Summary Scenario 1

	Federal	California	Combined
SE Tax	$11,304	N/A	$11,304
Income Tax	$7,526	$2,875	$10,401
Total Tax	$18,830	$2,875	$21,705

 

Scenario 2: Uber Driver Earning $50,000 with $15,000 in Expenses

Assumptions: Single filer, standard deduction, annual calculation method. No other sources of income.

 

Gross income	$50,000
Business expenses	-$15,000
Net self-employment income	$35,000

Federal Calculations

Step 1: Calculate self-employment (SE) tax:

• $35,000 × 92.35% = $32,323 (net earnings subject to self-employment tax)
• $32,323 × 15.3% = $4,945 SE tax
• Deductible half of SE tax: $4,945 ÷ 2 = $2,473

Step 2: Calculate federal income tax:

• $35,000 − $2,473 (SE deduction) − $16,100 (2026 standard deduction) = $16,427 taxable income
• Apply 2026 tax brackets:
  • 10% on first $12,400 = $1,240
  • 12% on $12,401 → $16,427 = $4,026 × 12% = $483
• Total federal income tax: $1,723

Step 3: Calculate total federal estimated tax:

• $4,945 + $1,723 = $6,668

Step 4: Calculate quarterly federal payment:

• $6,668 ÷ 4 = ≈ $1,667 per quarter

California State Calculations (Note: 2025 tax brackets used. 2026 tax brackets not available at time of publishing)

Step 1: Calculate California taxable income:

• Net self-employment income: $35,000
• Less CA standard deduction for 2026: $5,706
• Less deductible half of SE tax: $2,473
• California taxable income: $26,821

Step 2: Apply California tax brackets:

• 1% on first $11,078 = $111
• 2% on $11,079 → $26,263 = $15,184 × 2% = $304
• 4% on $26,264 → $26,821 = $557 × 4% = $22
• Total CA income tax: $437

Step 3: Calculate California quarterly payments:

• Q1 (30%): $437 × 30% = $131
• Q2 (40%): $437 × 40% = $175
• Q3 (0%): $0
• Q4 (30%): $437 × 30% = $131

Annual Tax Summary Scenario 2

	Federal	California	Combined
SE Tax	$4,945	N/A	$4,945
Income Tax	$1,723	$437	$2,160
Total Tax	$6,668	$437	$7,105

 

Scenario 3: Airbnb Host, Q1 Example

Assumptions: Single filer, standard deduction, quarterly calculation method. No other sources of income. Q1 actual figures: $20,000 revenue, $8,000 expenses

An important note when using the quarterly calculation method: This Q1 example uses actual income and expenses earned January through March. The same process repeats each quarter using that quarter’s actual figures.

Remember to track your cumulative income across quarters, as higher earnings later in the year may push you into a higher tax bracket, resulting in larger payments in Q2, Q3, and Q4. At year-end, reconcile your total tax owed against what you paid each quarter to confirm you haven’t underpaid.

 

Q1 gross rental income	$20,000
Q1 Business expenses	-$8,000
Q1 Net self-employment income	$12,000

Federal Calculations

Step 1: Calculate self-employment (SE) tax:

• $12,000 × 92.35% = $11,082 (net earnings subject to self-employment tax)
• $11,082 × 15.3% = $1,696 SE tax
• Deductible half of SE tax: $1,696 ÷ 2 = $848

Step 2: Calculate federal income tax:

• $12,000 − $848 (SE deduction) − $4,025 (¼ of $16,100 standard deduction) = $7,127 taxable income
• Apply 2026 tax brackets:
  • 10% on first $7,127 = $713 (entire amount falls within 10% bracket)
• Total federal income tax: $713

Step 3: Calculate Q1 federal estimated payment:

• $1,696 + $713 = $2,409

California State Calculations (Note: 2025 tax brackets used. 2026 tax brackets not available at time of publishing)

Step 1: Calculate California taxable income:

• Q1 net self-employment income: $12,000
• Less ¼ of CA standard deduction for 2026: $1,427
• Less deductible half of SE tax: $848
• California taxable income: $9,725

Step 2: Apply California tax brackets:

• 1% on first $9,725 = $97 (entire amount falls within 1% bracket)
• Total CA income tax: $97

Step 3: Calculate Q1 California payment:

• Estimated annual CA tax (projecting Q1 income × 4): $97 × 4 = $388 estimated annual
• Q1 payment (30%): $388 × 30% = ≈ $116

Annual Tax Summary Scenario 3                                                                                                     

	Federal	California	Combined
SE Tax	$1,696	N/A	$1,696
Income Tax	$713	$116	$829
Total Tax	$2,409	$116	$2,525

 

How to Pay Quarterly Taxes in California

As a California freelancer, you have two separate estimated tax obligations: one to the IRS for federal taxes and one to the California Franchise Tax Board (FTB) for state taxes.

These are separate payments made to separate agencies on different schedules.

Paying Federal Estimated Taxes

The IRS offers several ways to make your federal estimated tax payments:

Online (no fee)

• IRS Direct Pay: Pay directly from a checking or savings account at gov/payments. No registration required.
• IRS Online Account: Make payments and view your full payment history at gov/account.
• EFTPS (Electronic Federal Tax Payment System): Make one-time or recurring payments from a bank account. Requires enrollment at gov.
• Electronic Funds Withdrawal (EFW): Available when e-filing through tax software or a tax professional.

By Card (processing fees apply)

• Pay by debit card, credit card, or digital wallet online or by phone. Fees are charged by the payment processor. Find approved processors at gov/payments.

By Mobile Device

• Download the IRS2Go app to pay from your phone.

By Check or Money Order

• Mail with Form 1040-ES payment voucher payable to “United States Treasury.” Include your SSN and “2026 Form 1040-ES” on the check.

Paying California State Estimated Taxes

The FTB offers the following payment options:

Online

• Web Pay: Pay directly from a checking or savings account at ca.gov/pay. No fee.
• Electronic Funds Withdrawal (EFW): Available when e-filing through tax software or a tax professional.

By Card (processing fees apply)

• Use your Discover, MasterCard, Visa, or American Express Card to pay your tax. Call 800-272-9829 or go to com and use code 1555. ACI Payments, Inc. (formerly Official Payments) charges a fee for this service.

 

By Check or Money Order

• Mail with Form 540-ES payment voucher payable to “Franchise Tax Board.” Include your SSN and “2026 Form 540-ES” on the check.

Quarterly Tax Deadlines (2026)

Federal quarterly payments are due on:

Payment Period	Period Covered	Due Date
Q1	January – March	April 15, 2026
Q2	April – May	June 16, 2026
Q3	June – August	September 15, 2026
Q4	September – December	January 15, 2027

 

California quarterly payments are due on:

Payment Period	Amount Due	Due Date
Q1	30% of estimated annual tax	April 15, 2026
Q2	40% of estimated annual tax	June 15, 2026
Q3	0% (not required)	No payment required
Q4	30% of estimated annual tax	January 15, 2027

Key Differences Between Federal and California Payments

	Federal (IRS)	California (FTB)
Minimum Threshold	$1,000 owed	$500 owed
Payment Agency	IRS	Franchise Tax Board
Payment Schedule	Generally 4 equal installments	30%/40%/0%/30%
Q3 Payment Required	Yes	No
Q2 Due Date	June 16, 2026	June 15, 2026
Safe harbor (standard)	100% of prior year tax	100% of prior year tax
Safe harbor (high income)	110% of prior year tax	110% of prior year tax

Tip: Add all seven due dates to your calendar at the start of the year and set a reminder two weeks before each one. Missing a deadline, even by one day, can cause penalties and interest charges from both agencies.

Important note for higher earners: California requires all estimated tax payments to be made electronically if you make a single estimated or extension payment exceeding $20,000, or if you file a return with a total tax liability over $80,000. Once you cross either threshold, all future payments regardless of amount must be made electronically. Failure to comply results in a 1% noncompliance penalty.

 

California’s Front-Loaded Payment Schedule: What Quarterly Filers Need to Know

California’s 30% / 40% front-loaded schedule was designed around the annual estimation method where you know your estimated annual tax upfront and apply the percentages to that total.

When you use the quarterly calculation method, you’re only paying based on what you actually earned that quarter, which creates a potential problem.

The Risk

If your income is uneven or back-loaded, meaning you earn more in Q3 and Q4 than in Q1 and Q2, you may not have paid enough into California by the June 15 deadline to satisfy the 70% requirement (Q1’s 30% + Q2’s 40%). California doesn’t care that your income was lower in the first half of the year. It compares what you paid against your total annual tax liability when you file and calculates penalties on any shortfall per period.

Practical Implications

• Underpayment penalties: If the combined Q1 and Q2 payments don’t cover 70% of your final annual California tax bill, the Franchise Tax Board may assess an underpayment penalty on the shortfall, even if you pay everything owed by January 15.
• You can’t use Q3 to catch up: Unlike the federal schedule where a Q3 payment can help close a gap, California requires no Q3 payment at all, removing that opportunity to catch up.
• Q4 won’t save you: By the time Q4 rolls around, the penalty for underpaying in Q1 and Q2 has already been set in motion.

How to Protect Yourself

If you’re using the quarterly method, there are a few ways to manage this risk:

• Project forward at Q2: When calculating your Q2 payment in June, look at your total income earned so far and project what your full year might look like. If you’re on pace to earn significantly more in Q3 and Q4, consider voluntarily paying more than your Q2 quarterly calculation to get closer to the 70% threshold.
• Use the prior year safe harbor: If you pay at least 100% of your prior year’s California tax liability (110% if your prior year income exceeded $150,000), you’re generally protected from underpayment penalties regardless of how your payments are distributed across quarters. This is the simplest safety net for freelancers with unpredictable income.
• Annualized income installment method: California allows you to use an annualized calculation method that recalculates each required installment based on actual income earned in that period, which may reduce or eliminate underpayment penalties for periods where income was genuinely lower. It does not automatically eliminate penalties, the outcome depends on your specific income pattern. This method requires completing FTB Form 5805, which must be attached to your annual California return. Note that if you elect this method for one payment period, you must use it for all payment periods that year.

The Bottom Line

The quarterly calculation method is a legitimate way to calculate federal estimated tax payments, and works reasonably well for California freelancers whose income is relatively even throughout the year.

However, if your income is seasonal or unpredictable, the quarterly method creates real risk at the state level due to California’s front-loaded 70% requirement by June 15.

In those cases, the safest approach is to base your California payments on your prior year tax liability, which provides the clearest protection against underpayment penalties regardless of how your income is distributed across the year.

What Happens If You Don’t Pay?

If you miss payments or underpay, you may face penalties and interest charges from both the IRS and the FTB. Penalties are assessed per period. That means an underpayment in Q1 is penalized separately from an underpayment in Q2, and overpaying later in the year does not cancel out an earlier shortfall.

How to Avoid Penalties. The Safe Harbor Rule

The safest way to avoid penalties is to follow the safe harbor rule. You are protected from underpayment penalties if you pay:

Federal:

• At least 90% of your current year tax, or
• 100% of your prior year’s tax (110% if your prior year income exceeded $150,000)

California:

• At least 90% of your current year tax, or
• 100% of your prior year’s California tax liability (110% if your prior year California income exceeded $150,000)

What If You Overpay?

Overpaying is common, particularly for freelancers who use the prior year safe harbor method. If you overpay your estimated taxes, you have two options when you file your annual return:

• Request a refund: The IRS or FTB will return the overpaid amount.
• Apply it to next year: You can elect to credit the overpayment toward your first quarterly payment of the following year, which can simplify your Q1 cash flow.

How to Reduce Your Taxes

You can reduce your tax liability by reducing your taxable income. Common strategies include:

• Business Expenses: Any ordinary and necessary expense related to your work is deductible, including software, equipment, home office, and professional services. These reduce your net self-employment income, which will lower both your SE tax and your income tax.
• Home Office Deduction: If you use a dedicated space in your home exclusively for business, you can deduct a portion of your rent or mortgage, utilities, and internet costs.
• Retirement Contributions (IRA, SEP-IRA, Solo 401k): These contributions can reduce both your federal and California taxable income simultaneously.
• Health insurance deductions: Self-employed individuals can generally deduct 100% of health insurance premiums paid for themselves and their families, reducing taxable income.

Common Mistakes

Common mistakes include:

• Paying only federal taxes and forgetting California
• Underestimating income
• Not saving money for taxes
• Missing deadlines

Pro Tip

Most freelancers set aside 20% to 30% of their income for taxes to avoid cash flow problems when it comes time to make tax payments.

FAQ

Do I have to pay quarterly taxes in California?

Generally, yes, if you expect to owe at least $500 in California state tax after withholding and credits and do not have sufficient withholding to cover it. If you have a W-2 job alongside your freelance work, increasing your employer withholding may eliminate the need for separate quarterly payments.

Does California have high taxes?

Yes, California has the highest state income tax rate in the United States.

What happens if I miss a payment?

You may owe penalties and interest from both federal and California tax authorities. Penalties are assessed per period, so a missed Q1 payment is not offset by a larger Q2 payment.

Do gig workers need to pay quarterly taxes?

Yes. Most gig workers, including Uber and DoorDash drivers, must make estimated tax payments because their income is not subject to withholding.

What if I overpay my estimated taxes?

If you overpay, you can either request a refund when you file your annual return or apply the overpayment as a credit toward next year’s first quarterly payment.

What is the safe harbor rule?

The safe harbor rule protects you from underpayment penalties if you pay at least 90% of your current year tax or 100% of your prior year tax (110% if your income exceeded $150,000). This rule applies separately to both federal and California payments.