Use tax is California’s way of making sure sales tax gets paid even when the seller doesn’t collect it. If you buy tangible goods and no California sales tax appears on the invoice, you owe use tax on that purchase at the same rate as your local sales tax. In Buena Park, that combined rate is currently 7.75%.

The most common trigger is buying from out-of-state vendors. You order equipment from a company in Texas, supplies from a wholesaler in Florida, or furniture from an online retailer that doesn’t collect California tax. No sales tax shows up on the receipt, but California still expects that tax to be paid. Other situations include items purchased at out-of-state trade shows, goods bought via catalog or phone order, and inventory you originally purchased for resale but ended up using in your own business.

How you report use tax depends on whether you already file with the California Department of Tax and Fee Administration (CDTFA). If you have a seller’s permit and file regular sales tax returns, you report use tax on that same return. There’s a specific line for it. If you don’t hold a seller’s permit, you can report it on your California income tax return or register with the CDTFA for a use tax account. Either way, the responsibility falls on you to self-report.

The CDTFA audits specifically target use tax compliance. Auditors will pull your expense records and compare purchases against the sales tax that was actually collected. If you spent $40,000 on equipment and supplies from out-of-state vendors over a few years and never reported use tax on any of it, that gap becomes obvious fast. You’ll owe the full tax amount plus interest and potentially penalties.

A lot of businesses miss this because it doesn’t feel like something they owe. When you buy locally, tax gets collected at the register and you never think about it. When you buy online and no tax shows up, it just seems like the price was lower. But the obligation is still there. Having your sales tax filings handled properly means use tax gets caught and reported as part of your regular compliance instead of becoming a surprise during an audit.

The practical fix is straightforward. Flag every purchase where no California sales tax was charged and include it in your next filing. If you have months or years of unreported use tax, it’s better to get current voluntarily than to wait for the CDTFA to find it. Bookkeepers in Buena Park who understand California tax requirements can review your purchase records and make sure nothing was missed.