California Sales Tax and Invoicing Rules for 2026

TL;DR: California's statewide sales tax rate is 7.25%, but combined rates with district taxes can reach 10.25% or higher depending on the jurisdiction. Businesses with physical presence or exceeding $500,000 in annual California sales must collect and remit sales tax. Invoices should itemize tax separately and include seller identification.

State sales tax rate

California imposes a 7.25% base statewide sales tax — the highest state-level rate in the U.S. This breaks down into a 6% state rate plus a mandatory 1.25% local add-on.

Cities and counties layer additional district taxes on top, pushing combined rates to anywhere from 7.25% to 10.25% or more. Los Angeles County typically sees combined rates around 9.5%, while parts of the Bay Area can exceed 10%.

Always verify the rate by destination address — California is an origin-based state for in-state sellers but applies destination-based rules for out-of-state remote sellers.

Nexus rules

Physical nexus applies if you have offices, warehouses, employees, or inventory stored in California — including goods in Amazon FBA warehouses.

Economic nexus kicks in once you exceed $500,000 in total combined sales of tangible personal property delivered into California in the current or prior calendar year. There is no transaction count threshold — it is purely revenue-based.

Marketplace facilitators like Amazon and Etsy must collect on behalf of third-party sellers, but you still need to track your own nexus status for direct sales channels.

Invoice requirements

California does not mandate a rigid invoice format by statute, but the CDTFA (California Department of Tax and Fee Administration) expects sellers to maintain records that clearly show:

• Date of sale
• Seller name and address
• Buyer information
• Itemized description of goods or services
• Sale price
• Tax rate applied
• Tax amount charged

For B2B transactions involving resale certificates, keep the certificate on file — the CDTFA can request these during audits. Show sales tax as a separate line item on invoices rather than embedding it in the price.

Exemptions and special cases

Resale purchases are exempt when the buyer provides a valid California Resale Certificate (Form BOE-230).

Most groceries (unprepared food) are exempt, but prepared food, carbonated beverages, and hot food are taxable. Prescription medicine and medical devices are exempt. Manufacturing equipment may qualify for partial exemptions.

SaaS and digital goods remain largely exempt in California — the state does not tax most digital downloads or cloud-based software, though this is an area under ongoing legislative review.

Clothing is fully taxable in California, unlike some other states.

Filing frequency and deadlines

The CDTFA assigns filing frequency based on your estimated monthly tax liability:

• Monthly — liability over $10,000/month
• Quarterly — liability between $1,200 and $10,000/month
• Annually — liability under $1,200/month

Monthly returns are due by the last day of the following month. Quarterly returns are due on the last day of the month following the quarter's end (April 30, July 31, October 31, January 31). Annual returns are due January 31 for the prior calendar year.

Prepayments may be required for large monthly filers.

Penalties for non-compliance

Late filing incurs a 10% penalty on the unpaid tax amount. If you fail to file entirely, the CDTFA may impose a 25% penalty plus interest at the current rate (adjusted twice per year).

Fraudulent returns can trigger a 50% fraud penalty. Interest accrues from the original due date. Failure to register for a seller's permit when required can result in additional penalties and back-assessment of taxes owed.

The CDTFA conducts active audits — particularly targeting e-commerce sellers.

FAQ

Do I need to collect California sales tax if I sell from out of state?

Yes, if your sales into California exceed $500,000 in the current or prior calendar year, you have economic nexus and must register with the CDTFA, collect tax, and file returns.

Is SaaS taxable in California?

Generally no. California does not currently tax SaaS, digital downloads, or cloud-based software. However, if software is delivered on tangible media (like a CD), it becomes taxable. Monitor legislative updates as this may change.

How do district taxes work on invoices?

You charge the combined rate (state + district) based on the delivery address. Your invoice should show the total tax amount — you do not need to break out state vs. district taxes separately on the customer-facing invoice, but your records should support the breakdown for filing purposes.

Use InvoiceQuickly's tax rate lookup tool to find the exact combined rate for any California address before sending your next invoice.