San Francisco businesses collect sales tax at one combined rate, and getting it right starts with the rate, the nexus rules, and who administers what. This guide covers every number a seller needs, verified against the state tax authority.
What Is the San Francisco Sales Tax Rate in 2026?
The combined San Francisco sales tax rate is 8.625% as of 2026, per the California Department of Tax and Fee Administration rate lookup. San Francisco is a consolidated city-county, so there is no separate city versus county rate. The rate is the 7.25% statewide base plus 1.375% in district taxes. Verify your exact rate by delivery address before you collect.
| Component | Rate | Source |
|---|---|---|
| California state rate | 6.00% | CDTFA rate description |
| Bradley-Burns local (city/county) | 1.00% | CDTFA rate description |
| County transportation fund | 0.25% | CDTFA rate description |
| Statewide base | 7.25% | CDTFA rate description |
| San Francisco district taxes | 1.375% | CDTFA rate lookup |
| Combined San Francisco rate | 8.625% | CDTFA rate lookup |
California’s 7.25% base is the highest state base rate in the United States. San Francisco’s rate has held at 8.625% since January 1, 2025, per CDTFA archived rate tables. Rates can change quarterly, so confirm before each filing period.
Who Administers Sales Tax in San Francisco?
The California Department of Tax and Fee Administration (CDTFA) administers all sales and use tax in San Francisco. There is no separate city office for sales tax. CDTFA handles registration, rate lookup, return filing, and permit verification. It began operations on July 1, 2017, taking over sales tax duties from the Board of Equalization (BOE), per the state’s CDTFA launch announcement.
Any old content that names the BOE for sales tax registration or filing is outdated. Cite CDTFA for every current sales tax rule.
What Is Use Tax and When Do You Owe It?
Use tax is the buyer-side mirror of sales tax, owed at the same 8.625% rate when a taxable item is bought for use in San Francisco without sales tax collected. It typically applies to purchases from an out-of-state seller with no California nexus. Businesses self-assess and report use tax on their CDTFA returns under “purchases subject to use tax,” per CDTFA use tax guidance.
If sales tax would apply on an in-state purchase, use tax applies on the equivalent untaxed purchase from outside California.
When Do You Have Sales Tax Nexus in California?
You must collect San Francisco sales tax once you have physical or economic nexus with California. Nexus is the connection that creates a collection obligation. Economic nexus is based on sales volume, and physical nexus is based on people, property, or inventory in the state. Commenda’s United States nexus exposure guide tracks the threshold for California and every other state.
What Is California’s Economic Nexus Threshold?
California’s economic nexus threshold is $500,000 in total combined sales of tangible personal property delivered into the state in the current or preceding calendar year, per CDTFA’s Wayfair guidance. It was set by Assembly Bill 147 (AB 147), effective April 1, 2019. The test is sales-only. California has no 200-transaction threshold. Marketplace sales count toward this figure.
What Creates Physical Nexus in California?
Physical nexus comes from a storefront, office, or warehouse in California, or from employees and agents working in the state. Inventory in a California fulfillment center, including Amazon Fulfillment by Amazon (FBA) stock, creates physical nexus. So does regular attendance at trade shows or pop-up events. Affiliate arrangements can also trigger nexus, though economic nexus supersedes affiliate rules for most sellers in practice.
Do Marketplaces Collect San Francisco Sales Tax for You?
Yes. Under California’s Marketplace Facilitator Act, effective October 1, 2019, Amazon, Etsy, eBay, and Walmart collect and remit tax on sales made through their platforms, per CDTFA marketplace facilitator guidance. A seller whose retail sales are all facilitated by a registered marketplace facilitator generally does not need its own seller’s permit for those sales. A seller with California physical presence or any direct-channel sales must register and file for those direct sales.
Marketplace-facilitated sales still count toward your own $500,000 economic nexus threshold, even though the facilitator collects on them. That distinction trips up marketplace-only sellers who assume the platform ends every obligation.
Which Products Are Taxable in California?
Most tangible personal property is taxable in San Francisco, including clothing, because California has no apparel exemption. Groceries and prescription drugs are the main everyday exemptions. The table below covers the common categories a San Francisco seller handles.
| Category | Taxable? | Source |
|---|---|---|
| Apparel, electronics, furniture, physical books | Taxable | CDTFA rate description |
| Unprepared grocery food | Exempt | CDTFA |
| Prepared, hot food, and restaurant meals | Taxable | CDTFA |
| Prescription medications, certain medical devices | Exempt | CDTFA |
| Purchases for resale (valid resale certificate) | Exempt | CDTFA |
| Qualified nonprofit and government sales (with documentation) | Exempt | CDTFA |
| Bundled taxable and exempt items sold for one price | Taxable if not itemized | CDTFA |
The prepared-food rule matters for San Francisco’s large hospitality sector. Hot and restaurant food is taxable even when unprepared groceries are exempt.
Do SaaS Companies Pay Sales Tax in California?
No. California generally does not tax Software as a Service (SaaS). Software accessed remotely with no transfer of tangible property is not taxable. Electronically downloaded software and digital products, such as ebooks and streaming, are generally not taxable. Custom software is treated as a nontaxable service. Only prewritten software delivered on tangible media, such as a disk or USB drive, is taxable.
This is a pro-seller feature of California and a contrast with states that tax SaaS, including New York, Texas, and Washington. A San Francisco tech company selling cloud software to in-state customers often has no California sales tax liability on that revenue.
How Do You Register for a California Seller’s Permit?
Register free through CDTFA’s online services portal before you make taxable sales. California law requires a permit before you sell, and online registration typically issues the permit number when you finish. You may only collect tax after you are registered. Follow these steps:
- Gather business details: entity type, EIN or SSN, business address, and projected sales.
- Register through CDTFA online services.
- Receive your seller’s permit number.
- Configure the 8.625% destination rate at checkout for San Francisco deliveries.
- Begin collecting tax on taxable sales.
- File returns on your assigned frequency.
How Do You Calculate District Tax in San Francisco?
California is destination-based for most sales, so the rate follows the buyer’s delivery address, not your location. District taxes are what push San Francisco from the 7.25% base to 8.625%. Use the full street address, not the ZIP code alone, because rate boundaries do not follow ZIP lines. CDTFA’s address-based rate lookup is the canonical tool.
Orders shipping to multiple California cities can carry a different rate on each delivery line. CDTFA reports that more than three-fourths of California businesses operate in an area with at least one district tax, and district rates range from 0.10% to 2.00%. Commenda’s sales tax calculator looks up rates by address; it checks rates, not nexus exposure.
How Do You Handle Exemption Certificates and Audit Records?
Collect a valid California resale certificate or exemption document at the time of each exempt sale, store it digitally, and keep it as your audit defense. The certificate is what proves a sale was properly untaxed. CDTFA generally expects sellers to retain records, including certificates, sales invoices, and returns, for at least four years. Without the certificate on file, an exempt sale can be reassessed as taxable.
In an audit, CDTFA typically asks for exemption certificates, sales invoices, and return workpapers. Organize these by period so they map to each filed return.
How Often Do You File San Francisco Sales Tax Returns?
CDTFA assigns your filing frequency based on reported sales volume, and each frequency has its own due-date pattern. All returns are filed electronically through CDTFA online services, reporting total sales, taxable sales, and tax by jurisdiction. A zero return is required for every period even with no sales.
| Frequency | Who gets it | Return due date | Source |
|---|---|---|---|
| Monthly | High-volume sellers | Last day of the following month | CDTFA |
| Quarterly | Mid-volume sellers | Last day of the month after quarter close (Q1 due April 30) | CDTFA |
| Annual | Low-volume sellers | January 31 | CDTFA |
What Are the Penalties for Late Filing or Payment?
CDTFA charges a 10% penalty on unpaid tax plus interest at its current published rate, which CDTFA sets on a recurring basis. Because the 10% penalty applies to tax due, a true zero return carries no monetary penalty. A missed filing still triggers CDTFA follow-up, estimated billings, and possible permit action, so file the zero return anyway.
Collecting tax and not remitting it is more serious. It exposes the business to penalties, interest, audit, and potential criminal liability. Money collected as tax belongs to the state, and CDTFA treats non-remittance differently from simply not collecting.
What Other Taxes Do San Francisco Businesses Pay?
Sales tax is one layer. San Francisco separately imposes its own business taxes, administered by the city rather than CDTFA. Specific product categories also carry extra state taxes.
- Gross receipts tax and business registration fee. The City and County of San Francisco Office of the Treasurer and Tax Collector administers these, and they are not sales tax.
- Excise taxes on alcohol, tobacco, and cannabis apply on top of sales tax for those categories.
- Transient Occupancy Tax (TOT) applies to short-term stays and lodging.
Readers searching “San Francisco business tax” often conflate the gross receipts tax with sales tax. They are separate obligations collected by separate agencies.
What Are the Most Common San Francisco Sales Tax Mistakes?
The most common mistakes have simple fixes:
- Charging the wrong rate from a ZIP-only lookup. Use the full delivery address in CDTFA’s tool.
- Taxing SaaS or digital downloads. California generally exempts remotely accessed and electronically delivered software.
- Assuming marketplace collection ends all obligations. Register and file for your direct-channel sales.
- Skipping zero returns. File every period once you hold a permit, even with no sales.
- Not keeping exemption certificates. Collect and retain them for at least four years as audit defense.
How Commenda Helps With San Francisco Sales Tax Compliance
Commenda’s global indirect tax software tracks your physical and economic nexus across states, monitors the $500,000 California threshold, and manages registration and filing so nothing slips. It maps your products to the correct rates and exemptions across US jurisdictions, including San Francisco’s district add-on.
For rate lookups by address, use Commenda’s sales tax calculator. To see where you have crossed thresholds, check the United States nexus exposure guide. The calculator handles rates; the guide handles exposure.
Book a demo to get a free California nexus exposure assessment and confirm exactly where you owe.
