California sales tax

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California is the largest sales tax market in the US. It also has one of the most complex rate structures in the country. The state rate, county rate, city rate, and local district taxes all stack on top of each other. In some cities, the combined sales tax rate pushes past 10.75%.

Because of California’s population, many businesses trigger a California sales tax obligation before they even realize it. The California Department of Tax and Fee Administration (CDTFA) is one of the more active tax enforcement agencies in the US, so getting compliant is vital.

April 2026 brought rate changes across multiple California jurisdictions, making this a good time to review your obligations. This guide covers what is taxable in California, how nexus works, the correct registration steps, and how to handle filing and remittance.

What Is California Sales Tax?

California sales tax is a consumption tax on retail sales of tangible personal property. Sellers collect sales tax from buyers at the point of sale and remit it to the state.

The CDTFA administers both sales tax and use tax in California. Use tax applies when you buy goods outside California but use them inside the state on purchases where sales tax was not collected.

Services are generally exempt from California sales tax unless they result in the creation of tangible personal property.

What Is Taxable in California

Tangible Personal Property

Most tangible personal property (TPP) sold at retail is taxable by default in California. This includes physical goods like electronics, furniture, clothing, and equipment sold to end consumers. If it has physical form and you're selling it to someone for their own use, the default assumption is that it is taxable.

Digital Goods and Software

California treats most digital goods as non-taxable because they are not considered tangible personal property.

• Prewritten (off-the-shelf) software delivered electronically is not taxable
• SaaS subscriptions are not taxable in California
• Custom software is also generally exempt
• Downloaded digital products like music, movies, and e-books are generally not taxable

This is different from many other states, so if you sell software or digital products, California, with its well-established technology industry, is a favorable state from a sales tax standpoint. That said, bundled offerings that include taxable physical components can introduce complexity, and data products may be treated differently depending on the specifics.

Exempt Categories

The following are generally exempt from California sales tax:

• Most services (unless they result in the creation of tangible personal property)
• Unprepared groceries and food products (though prepared food, hot food, candy, and soft drinks are taxable)
• Prescription medications
• Manufacturing and R&D equipment (partial exemptions may apply)
• Shipping charges when separately stated at actual cost

Over-the-counter medications are generally taxable. Prescription drugs are not. If you sell both, you need to track them separately.

California Sales Tax Rates

The base California state sales tax rate is 7.25%. No California location charges less than this. The 7.25% breaks down into a 6.00% state general fund rate plus a mandatory 1.25% local portion.

On top of that base rate, local jurisdictions can pass voter-approved district taxes. These stack on top of the 7.25%, pushing combined rates higher. The range across California cities and counties runs from 7.25% up to 10.75% in some locations.

A few examples of current combined rates as of April 1, 2026:

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Because rates vary by the buyer's delivery address, you cannot use zip codes alone to calculate the correct rate. The CDTFA provides an address-specific rate lookup tool at maps.cdtfa.ca.gov, which gives you the accurate combined rate for any California location.

Sphere auto-calculates the correct blended state and local rate for every California transaction based on the buyer's delivery address.

How California Sales Tax Is Calculated

To calculate California sales tax, apply the correct combined rate to the taxable sale price based on where the buyer takes delivery.

For example: if you sell a $100 physical product to a customer in Los Angeles (combined rate 10.25%), the sales tax owed is $10.25.

A few things to keep in mind:

• Discounts and coupons generally reduce the taxable base
• Separately stated shipping charges at actual cost are generally not taxable
• If you ship multiple items in one order and only some are taxable, you need to divide the shipping charge proportionally and only tax the portion related to the taxable items

Using a California sales tax calculator helps, but getting the correct rate requires the buyer's actual delivery address, not just their city or county.

What Triggers a Sales Tax Obligation in California

Economic Nexus

California's economic nexus threshold is $500,000 in total gross sales of tangible personal property to California customers in the previous or current calendar year.

A few important details:

• Services do not count toward this threshold
• Pure SaaS revenue does not count toward this threshold
• All sales of tangible personal property count, including exempt sales
• Once you cross the threshold, registration and tax collection are required

Sphere monitors economic nexus thresholds in real time and alerts you before you cross them, so you are never caught off guard.

Physical Nexus

Any physical presence in California creates nexus. This includes:

• An office, store, or warehouse in the state
• An employee or contractor working in California, even remotely from a home office
• Trade show inventory stored temporarily in California
• A third-party fulfillment center holding your inventory

Remote employees are a common and often overlooked physical nexus trigger. If one of your team members works from home in California, you have nexus in that state.

Marketplace Facilitators

If you sell through platforms like Amazon, Etsy, Walmart or other marketplaces, those platforms are responsible for collecting and remitting California sales tax on your behalf under California's Marketplace Facilitator Act, which took effect in October 2019.

Important note: marketplace sales still count toward your personal $500,000 economic nexus threshold. If you sell through both Amazon and your own website, you need to track your total California sales across all channels.

How to Register for California Sales Tax

Where to Register

Register for a California seller's permit online through the CDTFA online portal at cdtfa.ca.gov. Applications are processed quickly. The CDTFA notifies you by email once your registration is complete.

There is no registration fee for a standard seller's permit. However, the CDTFA may require you to post a security deposit based on your estimated monthly tax liability.

What You'll Need

• Business name, mailing address, and entity type
• Federal EIN or Social Security Number
• A description of the products or services you sell
• An estimate of your monthly taxable sales

Timeline

Registration is effective immediately upon approval for most businesses. Once registered, you are required to collect California sales tax on all taxable California sales going forward.

Filing California Sales Tax Returns

How to File

File your California sales tax returns and make payments through the CDTFA online portal. The process involves logging in, selecting your account, and submitting your return along with your remittance.

Returns can also be prepared and filed automatically through a compliance platform like Sphere, which eliminates manual data entry and reduces the risk of errors.

Filing Frequency and Due Dates

The CDTFA assigns your filing frequency at registration based on your estimated sales volume:

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Tax returns are due on the last day of the month following the end of your filing period. For example, a monthly filer's return for January is due February 28.

Businesses with a monthly tax liability exceeding $17,000 are placed on a quarterly prepay schedule. This means two prepayments are due on the 24th of the first two months of the quarter, with the final return filed at the end of the quarter.

Penalties for Late Filing

California sales tax penalties add up fast:

• Late filing: 10% penalty on the unpaid tax amount
• Late payment: an additional 10% penalty plus monthly interest

The CDTFA actively pursues noncompliant businesses, including remote sellers. Missing a filing deadline is not something you want to do twice.

How Sphere Automates California Sales Tax Compliance

End-to-End Automation

Sphere monitors your California sales in real time and alerts you when you approach the $500,000 economic nexus threshold. When you are ready to register, Sphere handles the CDTFA registration process directly so you do not need to navigate the paperwork yourself.

Once registered, Sphere calculates the correct combined state and local sales tax rate on every transaction using the buyer's delivery address.

Filing, Remittance, and Certificates

Sphere prepares and submits your California sales tax returns automatically on your assigned filing schedule. It remits payment directly to the CDTFA.

For businesses outside the US that do not have a US bank account, Sphere's embedded remittance platform handles payment without requiring you to set up a domestic account. Sphere also manages sales tax exemption certificate collection and validation in one place, so your exempt sales are documented and defensible.

Beyond California

As your business scales, California will likely be just one of many jurisdictions where you have sales tax, VAT, or GST obligations. Sphere covers indirect tax compliance in 100+ regions from a single platform, with flat, transparent pricing at $100 per region per month. No overages, no hidden fees, no multi-year contracts.

Ready to automate your California sales tax compliance?

Schedule a demo with Sphere today.

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Get California Sales Tax Right From the Start

California's $500,000 economic nexus threshold, layered local district taxes, and active CDTFA enforcement make it one of the highest-stakes states for sales tax compliance.

SaaS and most digital goods are exempt from California sales tax, but physical goods and some bundled offerings are not. Knowing exactly what applies to your product mix is critical before you start selling into the state.

Sales tax registration, calculation, filing, and remittance all carry compliance risk when handled manually as you scale. The more California jurisdictions your sales touch, the more complex the rate math becomes. Getting automated from the start is the way to go.