Supplier information for a California seller’s permit is the identifying detail the California Department of Tax and Fee Administration (CDTFA) collects about each business you plan to buy inventory from: legal name, physical address, phone number, and any trade or credit account number you hold with them.1California Department of Tax and Fee Administration. Get a Seller’s Permit Have a recent invoice from each supplier in front of you before you start, and the section takes a few minutes.
The Four Fields the Application Asks For
The CDTFA’s online registration collects the following about each supplier:1California Department of Tax and Fee Administration. Get a Seller’s Permit
- Legal business name, entered exactly as it appears on the supplier’s invoices or purchase orders. A mismatch can flag the entry for manual review.
- Physical business address. Not a P.O. box. The state uses this to confirm the supplier has a verifiable commercial presence.
- A direct business phone number, which the CDTFA may use to cross-reference records.
- Your trade or credit account number with the supplier, if you have one. This lets the state match your purchases to the supplier’s sales records.
Elsewhere on the application you’ll also give your expected average monthly sales and the taxable portion of those sales.1California Department of Tax and Fee Administration. Get a Seller’s Permit Reasonable estimates are fine. The CDTFA uses them to gauge business volume and, in some cases, to decide whether a security deposit applies.
Why the CDTFA Wants This
The supplier section exists to protect the resale certificate system. Once you hold a seller’s permit, you can issue resale certificates to your suppliers so they don’t charge you sales tax on inventory you intend to resell.2California Department of Tax and Fee Administration. Sales for Resale Collecting supplier details up front lets the state cross-reference who is issuing resale certificates to whom. If a permit holder later hands out resale certificates to businesses that don’t line up with anything on file, that’s a signal worth a closer look. The supplier data creates an audit trail linking your tax-free wholesale purchases to the inventory you’re supposed to be reselling at retail.
Filling In the Supplier Section Online
California processes seller’s permit applications through the CDTFA’s online registration portal, and the supplier fields are part of that flow. There is no separate paper form for this section.3California Department of Tax and Fee Administration. Obtaining a Seller’s Permit The system moves through business structure and ownership details first, then reaches the supplier fields.
Each supplier gets its own entry. Save each one before adding the next. Working from a recent invoice avoids the two most common problems: guessing at the legal name and typing the wrong address. Invoices carry the legal name, the address, and the account number in one place.
If you’d rather apply in person, the CDTFA operates field offices around the state. Bring the same supplier details you would enter online.
If You Don’t Have Suppliers Lined Up Yet
Not every new business has its supply chain locked in before applying. A few situations come up often:
If you manufacture your own products, the vendors you buy raw materials from count as your suppliers for this section. If you’re still planning and haven’t placed any orders, enter what you have, even if it’s tentative. The CDTFA does not reject applications solely because the supplier section is incomplete, though leaving it blank entirely can trigger follow-up questions and slow processing.
For a dropshipping business, your dropship vendor is your supplier for permit purposes even though you never touch the inventory. Enter their business details the same way you would for a traditional wholesaler.
Keeping Supplier Records Current After the Permit Issues
Supplier information isn’t a one-time entry. When you add a new vendor, drop an old one, or a supplier’s address changes, update your account through the CDTFA’s online services portal or file Form CDTFA-345-WEB, Notice of Business Change, by mail.4California Department of Tax and Fee Administration. CDTFA-345-WEB, Notice of Business Change Outdated records complicate audits and raise avoidable questions about whether your resale certificate use is legitimate.
One boundary worth flagging: the supplier section is separate from the resale certificates themselves. Listing a supplier on your application does not authorize tax-free purchases from that supplier. You still have to issue a resale certificate to each supplier at the time of purchase, and only for goods you actually intend to resell. Using a resale certificate for property you know won’t be resold is a misdemeanor under California law and carries a civil penalty of 10 percent of the unpaid tax or $500, whichever is greater.5California Department of Tax and Fee Administration. Revenue and Taxation Code 6094.5 – Improper Use of Certificate The supplier information you provided during registration is one of the tools auditors use when checking that certificates were issued properly.