TL;DR: A supplier is a business that provides the goods, materials or services your business uses to make or run what it sells. A vendor is any business or person that sells to you, so every supplier is also a vendor. For a small business the words are interchangeable in accounting and payments; the distinction only pays off when you use it to set different contracts, controls and supplier reviews.
The difference between vendor and supplier is one of emphasis, not of law. "Supplier" describes the role in your supply chain: who fills a need for materials, components or recurring services (from Latin supplere, "to fill up"). "Vendor" describes the transaction: who sells to you and gets paid (from Latin vendere, "to sell"). US sales law uses neither word: the Uniform Commercial Code calls the parties buyer and seller. Your accounting software picks one term and uses it for everybody: QuickBooks Online calls them vendors, SAP S/4HANA calls them suppliers. In practice, vendor vs supplier is a naming choice, and the useful question is which rules you attach to each label.
Vendor vs supplier at a glance
| Criterion | Supplier | Vendor |
|---|---|---|
| What the word stresses | Supply role: fills a recurring need | Sale: the party you buy from and pay |
| Typical goods | Raw materials, components, packaging, goods for resale | Software, services, equipment, one-off purchases, finished goods |
| Position in the chain | Upstream, feeds your production or stock | Anywhere, including retail sellers to end customers |
| Relationship | Usually ongoing, volume and quality managed | Often transactional; long-term when it is a service with SLAs |
| Typical contract | Supply agreement: price, quantity, delivery schedule, quality specs | Vendor agreement or order: scope, SLA, support, licence terms |
| Payment terms | Net 30 or net 60 days on invoice, sometimes early-payment discounts | Card or annual prepay for software; net 30 days for services |
| What you measure | On-time delivery %, defect rate %, lead time in days, price vs quote | Uptime % in the SLA, response time in hours, renewal cost |
| Accounting record | Same vendor or supplier master record | Same vendor or supplier master record |
| Tax paperwork (US) | W-9; 1099-NEC if a non-corporate service payee is paid $2,000 per year or more (2026 payments) | Same rules |
| Who uses the word | Manufacturing, distribution, quality standards, SAP S/4HANA | IT, AP teams, QuickBooks, retail |
What is the difference between a vendor and a supplier?
A supplier is a business that provides the inputs your business relies on, usually repeatedly: steel for a fabricator, flour for a bakery, packaging for an e-commerce brand, products a wholesaler resells. A vendor is any party that sells you something, including those suppliers, but also your software provider, your accountant, the office-furniture store and the courier.
Three common definitions compete, and the top-ranking pages each pick one:
- Supply chain position. Suppliers are the first link (business to business, bulk, specific goods); vendors are the last link (selling to end users in small lots). This is the textbook model in the video below. It describes retail, not how a buyer should label its own suppliers.
- Goods vs services. Suppliers deliver goods and materials under price, quantity and delivery terms; vendors deliver services or finished products with ongoing support and service level agreements (SLAs). This is how contract-management teams such as LinkSquares split their templates.
- Strategic vs transactional. Suppliers are managed relationships (supplier relationship management); vendors are paid and forgotten. IT departments break this rule: they run "vendor management offices" for their most strategic software providers.
None of the three is "correct". Pick one for your business, write it down and apply it consistently.
This segment walks through the textbook supply chain model: supplier first, then manufacturer, distributor and vendor, with suppliers selling to businesses in bulk and vendors selling to end customers. It ends with the point that the label follows the purpose of the sale.
Is a vendor the same as a supplier in procurement and accounting?
In accounting, yes. Accounts payable has one master record type for every party you pay, and it does not care whether that party ships steel or sells a SaaS subscription. The name depends only on the software:
- QuickBooks Online calls them vendors: All apps > Expenses & Bills > Vendors > New vendor. Intuit describes vendors as "people or companies that you owe money to or subcontractors that work for you" (QuickBooks help).
- SAP S/4HANA calls them suppliers. The old vendor master and its transactions XK01, XK02 and XK03 are gone; you create a business partner in transaction BP and assign the supplier role, and "a supplier master record is automatically created in the background" (SAP Learning).
- Xero has neither object: a contact becomes a supplier when you record a bill against it.
In procurement the two words also overlap, with one shade of meaning: procurement people say "supplier" for the parties they source from and manage, and "vendor" when talking about onboarding and payment. Quality standards moved the other way entirely: ISO 9001:2015 replaced "supplier" with "external provider" and renamed the old Purchasing clause (7.4) to clause 8.4, "Control of externally provided processes, products and services" (the9000store summary). The standard lets you keep your own word.
Where the label changes contracts, payments and risk
The label is only worth having when it switches on different rules. These are the criteria where small buyers actually treat suppliers and vendors differently.
Contract type
Use a supply agreement for suppliers: unit prices, price-adjustment rules, volumes or a blanket order, delivery schedule, quality specification and rejection rights. Use a vendor or service agreement for service and software vendors: scope, SLA, support hours, data protection, renewal and termination notice. A purchase order is enough for one-off purchases from either.
Sourcing and quotes
Run competitive quotes for suppliers on a schedule, because their prices move with materials and volumes: the same specification to three or more suppliers, a fixed response window (for example 5 days), quotes held valid for at least 30 days, compared on landed cost and lead time, not unit price alone. A supplier quoting $1.29 with a 25-day lead time can cost more than one quoting $1.38 with an 8-day lead time once stockouts and expediting are counted. Vendors of services and software are usually re-quoted at renewal. Our guide to how to select vendors covers the scoring.
Payment terms and controls
Payment controls apply to everyone you pay, whatever you call them. Business email compromise, where a fraudster impersonates a supplier or an executive to redirect a payment, cost US victims $3,046,598,558 in 2025 according to the FBI IC3 2025 Internet Crime Report, up from $2,770,151,146 in 2024, a rise of about 10%. A request to change bank details gets a call-back to a number already on file and a hold of 1 to 2 days before the next payment run, for a steel supplier and a SaaS vendor alike. Payment terms differ by type, not by label: suppliers of goods commonly invoice on net 30 days, while software vendors usually bill monthly or annually in advance.
Tax paperwork
The IRS does not distinguish either. Collect a Form W-9 (current revision March 2024) from every US payee before the first payment. For payments made in 2026, the Form 1099-NEC and 1099-MISC reporting threshold rose from $600 to $2,000, and the IRS says it "may be adjusted for inflation beginning in calendar year 2027" (IRS instructions). Backup withholding follows the same threshold. 1099-NEC forms for 2026 payments are due January 31, 2027.
Performance reviews
Score suppliers on delivery, quality, lead time and price against the quote, with weights you set in advance (for example 40% delivery, 30% quality, 30% price) and a target such as 95% of orders on time. Review service vendors on SLA performance (the uptime % the contract commits to, such as 99.9%), support response time in hours and renewal cost. Scoring both with one scorecard produces numbers nobody uses.
Can a company be both a vendor and a supplier?
Yes, in two ways. First, every supplier is a vendor from your accounts-payable point of view, so the same company is both by definition. Second, one company can play both roles for you: a packaging firm that sells you boxes (supplier) and also leases you a pallet wrapper with a service contract (vendor). Keep it as one master record with one bank account and one W-9, and attach two contracts. Splitting it into two records invites duplicate payments.
A company can also be your supplier and your customer at once, for example a distributor you buy from and resell to. SAP handles that with one business partner holding both the supplier and the customer roles.
Which term should a small business use in its vendor master and contracts?
Use the term your accounting software uses for the record, so staff and auditors see one word: "vendor" in QuickBooks, "supplier" in SAP. Then add a category field to every record with values such as:
- Direct supplier: goods that go into what you sell or resell.
- Indirect supplier: consumables, maintenance, repair and operations (MRO) items.
- Service vendor: professional and contract services.
- Software vendor: subscriptions and licences.
The category, not the word, then drives the contract template, the review cadence and whether you send RFQs. Give renewals a calendar reminder 60 days before the notice deadline so software vendors do not auto-renew unreviewed. In contracts, define the party once ("Supplier" or "Vendor", capitalised) and use that word throughout; mixing the two in one agreement creates ambiguity a lawyer will happily bill you for. A vendor onboarding checklist applied to every new record keeps the categories filled in.
Choose "supplier" if / choose "vendor" if
Choose "supplier" as your house term if:
- Most of your spend is materials, components or goods for resale.
- You manufacture, distribute or run a quality system (ISO 9001 audits, supplier audits).
- Your ERP already says supplier (SAP S/4HANA, many manufacturing ERPs).
Choose "vendor" as your house term if:
- Most of your spend is services, software and indirect purchases.
- Your books live in QuickBooks or a similar small-business accounting tool.
- AP owns the record and procurement is part-time.
Either way, keep the category field. That is what turns the vendor vs supplier debate into rules you can act on.
Where AuraVMS fits
The part of the relationship where the label pays off most is sourcing direct suppliers: sending one specification to several suppliers and comparing what comes back. AuraVMS is RFQ and purchase-order software for small and mid-sized businesses: suppliers respond without creating an account, quotes appear side by side with automatic L1/L2/L3 price ranking, and anonymous bidding keeps suppliers from seeing each other's names. AuraVMS starts at $4.99/month, billed annually. For the wider picture of how sourcing and ordering fit together, see procurement vs purchasing.
FAQ
What is the difference between a vendor and a supplier?
A supplier provides the goods, materials or recurring services your business uses to make or run what it sells. A vendor is anyone who sells to you. Every supplier is a vendor, but your software provider or accountant is a vendor you would rarely call a supplier.
Is a vendor the same as a supplier?
For accounting, tax and payments, yes: both sit in the same master record, need a W-9 in the US and follow the same 1099 rules. The difference is in how you contract with and review them, which depends on whether they supply goods or services.
Is a supplier a vendor in accounting?
Yes. Accounts payable treats every party it pays as a vendor (QuickBooks) or a supplier (SAP S/4HANA). The software name is a convention, not a separate category.
What is an example of a vendor vs a supplier?
For a bakery, the flour mill and the packaging company are suppliers. The point-of-sale software company, the pest-control service and the accountant are vendors. All of them are paid through the same accounts payable process.
Is a distributor a vendor or a supplier?
A distributor is a supplier to the businesses that buy from it and a vendor in their accounts payable. In the textbook supply chain it sits between the manufacturer and the retail vendor.
Do I need a W-9 from suppliers and vendors?
Collect a W-9 from every US payee before the first payment. From 2026 payments, a 1099-NEC is required only when a reportable payee receives $2,000 or more in the year, up from $600.