California imposes sales tax on most tangible goods, which means if you’re selling physical products online, you’re almost certainly required to collect it. The statewide base rate is 7.25%, but the actual rate your customers pay is higher because of district taxes that vary by location. Rates across California range from 7.25% to over 10.25% depending on the city and county where the buyer lives.

California uses destination-based sourcing. That means you charge sales tax based on where the product is delivered, not where your business is located. If you’re based in Long Beach but ship a product to a customer in Los Angeles, you charge the LA rate. This is one of the trickiest parts for e-commerce sellers because you could be dealing with dozens of different tax rates across the state.

If you sell through marketplace platforms like Amazon, Etsy, or Walmart Marketplace, those platforms are considered marketplace facilitators under California law. They are responsible for collecting and remitting sales tax on your behalf for transactions that happen through their sites. This is a big relief for sellers on those platforms, but it does not cover sales made through your own Shopify store, WooCommerce site, or any other direct channel. For those sales, you need to register, collect, and remit the tax yourself.

You register for a seller’s permit through the California Department of Tax and Fee Administration (CDTFA). There is no fee to register. Once registered, you’ll be assigned a filing frequency (monthly, quarterly, or annually) based on your sales volume. Even if you owe nothing for a period, you still need to file a return.

For out-of-state sellers, California’s economic nexus threshold is $500,000 in sales delivered to California customers. If you exceed that, you’re required to collect California sales tax regardless of where your business is physically located.

A few things that commonly trip sellers up. Shipping charges in California are not taxable if shipping is listed separately on the invoice and the shipping charge reflects the actual cost. But if you bundle shipping into the product price or charge a flat handling fee, it can become taxable. Digital products like ebooks, downloaded music, and software subscriptions are generally not subject to California sales tax, which is worth knowing if you sell a mix of physical and digital goods.

Most e-commerce sellers use automated tools like TaxJar, Avalara, or the built-in tax calculators in Shopify and WooCommerce to handle rate lookups and collection. These tools take the guesswork out of applying the correct district tax rate. But the tax still needs to be recorded correctly in your books so your filings match what was actually collected.

Getting the sales tax right is one piece of the puzzle. Making sure those transactions are properly tracked in your accounting software is another. Working with a small business bookkeeping service that understands e-commerce can help you stay on top of both so nothing falls through the cracks at filing time.