California General Resale Certificate: Rules, Uses, and Penalties

A California resale certificate lets you buy inventory from suppliers without paying sales tax at the time of purchase, on the understanding that tax will be collected when you resell the goods. You create one by filling out form CDTFA-230 (or any document with the same required information) and handing it to your vendor. Before you can issue one to anybody, though, you need a California seller’s permit, and you need to understand exactly what the certificate does and does not cover. Misuse carries a penalty of 10 percent of the unpaid tax or $500 per improper purchase, whichever is greater.¹

Get a Seller’s Permit First

Anyone selling or leasing tangible personal property in California has to register for a seller’s permit, whether the business is a storefront, an online shop, or a weekend booth. It covers wholesalers and retailers, and it applies to individuals, corporations, partnerships, and LLCs.² The permit is what authorizes you to collect sales tax from your customers and, more to the point here, to issue resale certificates to your own suppliers.³

The permit itself is free, but the CDTFA may require a security deposit at application time to cover any unpaid taxes if the business later closes. The deposit amount is set case by case based on your estimated sales.² You can register online through the CDTFA site. Finish this step before placing your first wholesale order. A resale certificate without a valid permit number on it will not survive an audit.

Filling Out the Resale Certificate

Form CDTFA-230 is the standard document, but California does not insist on that specific form. A purchase order, letter, or any written statement works as a resale certificate so long as it contains every required element.⁴ The document has to include:

Your name and address.
Your valid California seller’s permit number. If you aren’t required to hold a permit (because you sell only nontaxable items like food for human consumption, or make no sales in California), you must explain why in place of a number.
A description of what you’re buying, either itemized or by type. Saying “various merchandise” is not enough.
The phrase “for resale.” Words like “nontaxable,” “exempt,” or “tax-free” do not satisfy this requirement.
Your signature (or that of an authorized employee) and the date. An undated certificate won’t be invalidated on that ground alone, but dating it avoids a needless fight during an audit.

Give the certificate to the supplier before they bill you, within their normal billing cycle, or before the goods are delivered, whichever comes last.⁴ In practice, hand it over at or before your first order. Once a certificate is on file with a vendor, it covers all future purchases of the described property from that vendor until you revoke it in writing.

What You Can Buy Tax-Free

The certificate covers property you intend to resell before putting it to any other use. The CDTFA draws that line clearly.⁵ Valid uses are:

Finished goods you’ll resell. Clothing a boutique will stock, electronics a retailer will put on shelves, parts a distributor will ship.
Raw materials and components that will physically become part of a product you sell, such as fabric a manufacturer sews into garments.
Items held solely for demonstration or display while you keep them for sale in the regular course of business.

What You Cannot Buy With It

This is where businesses get into trouble. A resale certificate is not a general sales tax exemption, and the CDTFA treats improper use seriously. Do not use the certificate for:

Items you’ll use in your business — office furniture, cleaning supplies, tools, shop equipment. These are consumed by your operation, not resold.
Anything for personal use. Buying a TV “for resale” and mounting it in your living room is exactly what the penalty statute targets.
Items you plan to use before reselling. If you’ll use a piece of equipment for six months and then sell it used, the resale certificate doesn’t apply to the original purchase.
Property held purely for appreciation in value and future sale.

If you accidentally paid sales tax on something you later resell before using it, you aren’t stuck. You can deduct the cost of those tax-paid items on your sales and use tax return when you report the resale.⁵

When Your Plans Change: Use Tax

A common trap catches new business owners off guard. You buy something with a resale certificate, fully intending to resell it, and then circumstances change. The product doesn’t sell and you start using it in the shop, or you pull a display item for your own office. At that point, you owe use tax on the item’s purchase price. The CDTFA-230 form itself warns that any use of the item other than for resale triggers use tax.⁶

Report and pay that use tax on your next sales and use tax return. Catching it yourself and reporting promptly is far better than having an auditor find it. Self-reporting avoids the penalty provisions that apply to intentional misuse.

Penalties for Misuse

If you used a certificate to buy goods you knew at the time of purchase would not be resold, you owe the full sales tax you avoided plus a penalty equal to 10 percent of that unpaid tax or $500 per purchase, whichever is greater.¹ The per-purchase structure is what makes it expensive. Ten separate misused purchases produce ten separate $500-minimum penalties, even when the individual items were small.

If the CDTFA finds that the underpayment came from fraud or intent to evade sales and use tax law, an additional 25 percent penalty applies to the total deficiency.⁷ Interest also accrues on unpaid tax from the date it was originally due. For 2026, the CDTFA charges 10 percent annual interest on delinquent balances, calculated monthly.⁸

Knowingly issuing a resale certificate for property you don’t intend to resell, for the purpose of evading tax, is a misdemeanor under California law.¹ Prosecution for small-dollar misuse is rare, but the CDTFA does pursue it in repeated or large-scale cases. The misdemeanor charge is separate from the financial penalties; you can face both.

If You’re the Seller Accepting a Certificate

Businesses are often on both sides of this transaction. When a customer hands you a certificate, you’re agreeing to forgo collecting sales tax, and the document needs to hold up if the CDTFA audits you. The standard is “good faith.” A seller is presumed to have acted in good faith if the certificate contains all the required elements and appears valid on its face.⁴ Check that the permit number is present, the description of goods makes sense for that buyer’s business, the “for resale” language appears, and the certificate is signed.

If a buyer wants to purchase goods that aren’t normally resold in their line of work — a restaurant owner buying a commercial lawnmower, say — insist on a certificate that specifically states the item is for resale in their regular course of business. The CDTFA also provides a free online tool to confirm a buyer’s permit number is active.⁹ You’re not legally required to run the check, but auditors are much more sympathetic to sellers who did. Keep every certificate you accept; without it, you can be held liable for the uncollected tax as if the certificate never existed.

1
California Department of Tax and Fee Administration. California Revenue and Taxation Code 6094.5 – Improper Use of Certificate
2
California Department of Tax and Fee Administration. California Department of Tax and Fee Administration – Obtaining a Seller’s Permit
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California Department of Tax and Fee Administration. Do You Need a California Seller’s Permit?
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California Department of Tax and Fee Administration. Regulation 1668 – Sales for Resale
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California Department of Tax and Fee Administration. Sales for Resale (Publication 103)
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California Department of Tax and Fee Administration. CDTFA-230 – General Resale Certificate
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California Legislative Information. California Revenue and Taxation Code 6485
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California Department of Tax and Fee Administration. Interest Rates
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California Department of Tax and Fee Administration. Permits and Licenses