Tax-Exempt & PO Buyers: Certificates, W-9, Vendor Forms and Invoice Payment

Buying for a school, agency, nonprofit or company with a purchasing process? Everything you need to set Supply Tie up as a vendor is handled by email at support@supplytie.com. We reply within 1 business day, Monday to Friday, 8 AM to 4 PM ET.

1. Tax-exempt certificate

  1. Create a Supply Tie account (or sign in).
  2. Email your exemption or resale certificate as a PDF or clear photo to support@supplytie.com, from the email you sign in with. Subject: "Tax Exempt Application – [Your Business Name]".
  3. We review it once, mark your account tax exempt and email you to confirm. You don't need to send it again.
  4. Check out signed in: sales tax is skipped automatically. Exemption applies to orders placed after the account is marked exempt.

More: tax-exempt purchasing.

2. W-9 and vendor forms

  • W-9: email support@supplytie.com with "W-9 request" and your company name. We send a current, signed W-9 for Supply Tie, LLC. We don't post it publicly, to protect our tax ID and your AP team from vendor-setup fraud.
  • Supplier portals, vendor setup forms and government registrations (for example, a form that asks for SAM.gov details): email the invite or form to support@supplytie.com and we complete it.

More: vendor documents.

3. Ordering on a PO

  • Approved Net 30 accounts: add items to your cart, then use the Submit a Purchase Order form with your PO number. No payment is collected on that form; we confirm before anything ships. To apply for terms, use the business account form.
  • No terms yet? Email your PO or item list to support@supplytie.com. We reply with an invoice that has a secure payment link. Your PO number goes on the invoice.

4. Paying an invoice link (credit card)

  1. Open the invoice email from Supply Tie and click the payment link.
  2. Check the items, quantities, shipping and tax. If your account is tax exempt, sign in so tax is removed.
  3. Pay by credit card. There is no added card fee.
  4. You get an order confirmation by email, then tracking when it ships.

Payment safety: we never change payment details by email. If anyone asks you to pay a different way or to a different account, verify with support@supplytie.com before paying.

FAQ

How do I send my tax-exempt certificate?

Create a Supply Tie account, then email the certificate as a PDF or clear photo to support@supplytie.com from the email you sign in with. We review it once and mark the account exempt; after that, sales tax is skipped automatically when you check out signed in.

Can you send a W-9 for vendor setup?

Yes. Email support@supplytie.com with "W-9 request" and your company name. We send a current, signed W-9 for Supply Tie, LLC, usually within 1 business day.

Our agency or company needs you set up in our supplier portal. Can you do that?

Yes. Email the portal invite or vendor setup form to support@supplytie.com and we complete it, including any SAM.gov or vendor registration questions it asks.

We pay against a PO. How does that work?

Approved business accounts with Net 30 terms can order on a PO number. Everyone else can send the PO to support@supplytie.com; we email an invoice with a secure payment link, and you pay it by credit card.

Is there a fee to pay the invoice by card?

No. There is no added card fee on our invoice links.

Do you accept ACH or wire for invoice links?

Invoice links are paid by credit card. Approved Net 30 accounts are billed on terms.

Supply Tie, LLC · 100,000+ items shipped to the lower 48 states · Net 30 for approved business accounts · Business accounts FAQ