Cannabis Vendor W-9 & Resale Certificates

Tax forms are the quiet friction in every new vendor relationship. Before you can pay a cannabis vendor, you need their W-9 on file. Before that vendor can sell to you without charging sales tax, they need your resale certificate. Historically that means emails, faxes, PDFs, and a folder nobody can find at tax time. ShelfSpace moves the whole exchange onto one system — collected in the onboarding flow, signed in a couple of clicks, stored encrypted, and shared with a logged trail.

How Vendor W-9 Collection Works

When you onboard a cannabis vendor, the W-9 is built into the invite. The vendor clicks the link, enters their EIN and federal tax classification, and submits their W-9 in the same flow where they set up banking and contact details. You don't email a blank form, you don't chase a signature, and you don't re-type anything into your records. See vendor onboarding for the full invite flow.

The vendor's EIN is encrypted the moment it's stored and displayed back masked — you see the last four digits, never the full number on screen. Their W-9 status shows on the vendor's profile, so you always know which vendors have a current form and which don't.

Signing Your Own W-9 and Resale Certificate

Vendors need documents from you, too. Under Settings → Tax Forms you can sign your own IRS Form W-9 and your state resale certificate. The platform auto-fills each form from your business profile — legal name, EIN, federal tax classification, and your sales-tax registration number for the resale certificate — so there's nothing to fill in by hand.

You sign by typing your full legal name, which stands as your electronic signature under 28 U.S.C. § 1746. There's no third-party e-signature tool to log into and no PDF to print, scan, or fax. If you run more than one location, you can sign once and apply the form across your group, with each location's form reflecting its own legal entity.

Sharing Tax Documents — Every Reveal Is Logged

Tax documents are shared, never left exposed. When you need a vendor's W-9, you reveal it from their profile; when a vendor needs your resale certificate, they reveal it from yours. Either way, the platform records who looked, when, and from where, and it notifies the other party that their document was viewed. Verified vendors can also see a partner retailer's W-9 and resale certificate the same way.

That trail means there's never a question of who has what. No "can you resend your W-9," no lost certificate at tax time, and a clear record if a question ever comes up.

How Your Tax Data Is Secured

EINs are encrypted at rest and only ever shown masked on screen. Sole-proprietor taxpayer numbers live inside the signed W-9 itself, not in a plain-text field. Every reveal is access-logged with the user, role, time, and IP, and the other party is notified — so sensitive tax data is handled deliberately, not casually emailed around. For the broader record of platform activity, see the audit trail.

What ShelfSpace Does and Doesn't Do

ShelfSpace handles the collection, signing, storage, and sharing of W-9s and resale certificates between you and your vendors. It is not a tax-filing service. The platform does not generate or file 1099s, and it does not validate taxpayer numbers against the IRS — it collects and securely stores the forms so the right information is on file when you and your accountant need it.