Onboard a vendor before the first invoice arrives
Vendor Agreement Electronic Signature: Sign a Vendor Contract Online
SignSend sends your vendor agreement, W-9, and insurance request in one PDF, collects the vendor's signature and yours, and returns one executed copy with an audit certificate. Accounts payable gets everything it needs before the first bill lands.
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2. Add signers
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3 documents a month, no card required
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Vendors per month
One document
Agreement, W-9, and COI request together
ESIGN
Legally binding in all 50 states
A vendor agreement is the contract between a business and a supplier that sets the goods or services, the price, the payment terms, and who is responsible for what. It is the document that makes net-30 mean net-30 and keeps an auto-renewing contract from quietly locking you in for another year. The friction is onboarding: before you can pay a new vendor, accounts payable needs a signed agreement, a W-9, and often a certificate of insurance, and those usually arrive in three separate emails on three different days.
SignSend takes the whole set as one combined PDF. Upload the vendor agreement, add the vendor and yourself as the countersigning party, drop in the W-9 and an insurance request, and send. The vendor signs from any device on their own schedule, and you get one executed copy with a certificate showing who signed, when, and from where. This page covers how vendor agreements get signed electronically, what the agreement should lock down, how a master vendor agreement works with per-order terms, and the questions procurement and finance teams ask before moving vendor onboarding off paper.
Can a vendor agreement be signed electronically?
Yes. A vendor agreement is a business-to-business contract, so an electronic signature on it carries the same legal weight as ink under the federal ESIGN Act and state UETA laws. No notary is required. A vendor contract can even be binding without a formal signature when there is clear evidence of mutual agreement, but relying on emails or an accepted purchase order invites disputes. A signed agreement with an audit certificate removes the ambiguity.
Signing electronically also gets the vendor productive faster. Instead of printing, signing, scanning, and emailing back, the supplier signs from a phone or laptop, you countersign, and the executed agreement exists the same day. If terms change at renewal, you send an amendment through the same flow and it lands on file with the original.
Send the whole vendor packet in one PDF
Onboarding a vendor is rarely just the agreement. Finance needs a W-9 to pay them and file the 1099, and your risk file often needs a certificate of insurance. When those arrive separately, one is always missing when the first invoice hits. Put them in one PDF so the vendor handles everything at once and accounts payable can set them up cleanly.
| Document | Why it is in the packet |
|---|---|
| Vendor agreement | The binding contract: scope, pricing, payment terms, renewal, and liability. |
| W-9 | Gives finance the tax ID needed to pay the vendor and file the 1099. |
| Insurance request | Prompts the vendor to provide a current certificate of insurance where your contract requires it. |
| Order or SOW (as needed) | The per-order terms that sit under a master vendor agreement, routed through the same flow. |
Master vendor agreement, then per-order terms
If you buy from the same supplier repeatedly, a master vendor agreement saves you from renegotiating the whole contract every time. The master agreement sets the terms and conditions once (payment terms, liability, confidentiality, renewal), and each purchase order or statement of work references it for the specifics of that order. You sign the master once, then route the lighter per-order documents as they come.
SignSend fits that model. Send the master vendor agreement for signature and keep the one executed copy, then send each order or SOW through the same tool. The renewal date and auto-renew language live in the signed master, so you always know when a contract is about to roll over and can send an amendment before it does.
Features
What SignSend does for vendor agreements
Built for the team that onboards new suppliers every week and needs them paid, insured, and on file fast.
The onboarding packet in one PDF
Send the vendor agreement, the W-9, and an insurance request together so accounts payable can set the vendor up and pay the first invoice without chasing documents.
Countersign and file
Add the vendor and your countersigning team member as signers, and both get their link the same day, so the fully executed agreement is dated and complete before any order goes out.
One version on the record
There is one executed copy of the agreement, so the payment terms, renewal date, and liability caps you agreed to are never in question.
Send the same document again
Keep your standard forms as PDFs on your own drive and upload the right one for the next send. SignSend does not store templates, and sending the same document again costs nothing.
Master agreement, then per-order
Sign the master vendor agreement once for the terms, then route each order or SOW through the same flow so you are not re-signing the whole contract every time.
Flat pricing, no per-seat fees
Onboard five vendors or fifty for the same flat price. No per-signer charges and no envelope caps in a busy quarter.
How it works
How to sign a vendor agreement online
From draft to one executed agreement, before the first order.
01
Upload the vendor agreement
Drag and drop the agreement as a PDF, up to 20MB. Add the W-9 and an insurance request into the same PDF so the vendor handles it all at once.
02
Add the vendor
Add the vendor as a signer, and add your countersignature block. SignSend gives each signer a signature block of their own.
03
Send, countersign, and file
The vendor signs from any device, you add your countersignature, and when the last signature lands you download the completed agreement with its audit certificate for the vendor file.
Comparison
How vendor signing compares
Most vendors bill by the seat and count every supplier you onboard as a paid user. You add suppliers constantly and should not pay per head to do it.
| Feature | SignSend Pro | Typical vendor |
|---|---|---|
| Starting price | Free plan, or $12/mo flat Pro | $25/user/mo+ |
| Per-user fees | None | Per seat |
| Documents per month | Unlimited | Envelope caps |
| Suppliers need an account | No | Sometimes |
| Multiple docs in one PDF | Included | Higher tiers |
| Reusable templates | Not offered | Higher tiers |
Competitor details reflect publicly listed plans and may change. Check each provider’s site for current pricing.
Who it’s for
Who signs vendor agreements on SignSend
Procurement and operations
Onboard new suppliers with the agreement, W-9, and insurance signed and on file before the first order goes out.
Finance and accounts payable
Set up a vendor to pay on net terms with the tax ID and signed agreement in hand, not chased after the first invoice.
Restaurants and retail
Sign food, supply, and service vendors quickly, and keep one executed agreement per supplier in the vendor file.
Agencies and services firms
Route subcontracted-supplier and software agreements through one flow so the terms and renewal dates are always on record.
Facilities and property teams
Onboard cleaning, landscaping, and maintenance vendors with insurance requirements handled in the same PDF.
FAQ
Vendor agreement e-signature questions
Can a vendor agreement be signed electronically?
Yes. A vendor agreement is a business-to-business contract, so electronic signatures on it are valid and enforceable under the federal ESIGN Act and state UETA laws, the same as ink. No notary is required. The audit certificate recording who signed, when, and which version is the proof that holds up if a dispute arises.
Do vendor agreements need to be signed?
To be safe, yes. A vendor agreement takes effect when both parties accept the terms, and a signature is the cleanest evidence of that. A contract can be binding without a formal signature when mutual agreement is clear, but signing (physical or electronic) avoids disputes and gives both sides one executed copy to rely on.
What should a vendor agreement include?
Core clauses include scope of goods or services, pricing and payment terms (such as net-30), term and renewal, service levels, indemnification, insurance requirements, confidentiality, intellectual property, limitation of liability, and termination. Watching the renewal and auto-renew language is key so an evergreen contract does not lock you in unnoticed.
What is a master vendor agreement?
A master vendor agreement is a single contract that sets the terms and conditions governing all business with a vendor, so you do not draft a new contract for every product or order. Individual purchase orders or statements of work then reference the master for specifics, which simplifies and speeds up repeat purchasing.
What is the difference between a vendor agreement and a contract?
A vendor agreement is a type of contract, one specifically between a buyer and a supplier of goods or services. Every vendor agreement is a contract, but not every contract is a vendor agreement. The term signals the relationship (buying from a supplier) and the clauses that typically come with it, like pricing, delivery, and insurance.
Does a vendor need to fill out a W-9?
Usually yes. To pay a US vendor and file the required 1099 at year end, finance needs the vendor's tax ID from a completed W-9. Collecting the W-9 in the same PDF as the agreement means accounts payable can set the vendor up and pay the first invoice without a follow-up request.
Related pages
What should a vendor agreement include?
The clauses that matter and the auto-renew trap to watch.
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Onboard your next vendor today
Send the agreement, W-9, and insurance request in one PDF and start free. No credit card required.