Vendors

A vendor is a person or business that sells goods or services to another person, business, or organization. Companies often use vendors to buy supplies, equipment, software, professional services, and other items needed for daily operations. A vendor relationship usually depends on a contract, purchase order, invoice, or service agreement. These documents may set the price, payment terms, delivery requirements, service standards, warranties, and remedies if one party fails to perform.

The term “vendor” doesn’t always create one specific legal status. A vendor may be a seller of goods, a service provider, an independent contractor, or another type of business partner, depending on the relationship and the agreement. Vendors are generally separate from employees, but tax, employment, and reporting rules may apply based on how the relationship works.

How vendor relationships work

A vendor relationship begins when a business identifies a need it cannot or chooses not to fulfill internally. The relationship typically formalizes through a written vendor agreement that covers the scope of goods or services, pricing, payment terms, delivery schedules, and liability provisions. Without a written agreement, disputes over performance or payment are harder to resolve.

Once a contract is in place, the buyer places orders under the agreed terms. The vendor fulfills the order, issues an invoice, and payment is made according to the agreed schedule.

Common examples of vendors

Vendors appear across virtually every industry and business function.

• Product suppliers: A retail boutique buys inventory from a wholesale apparel vendor.
• Software providers: A marketing agency pays a monthly subscription to a SaaS vendor for project management tools.
• Professional service providers: A restaurant hires a food safety consultant for compliance audits.
• Logistics vendors: An e-commerce business uses a third-party shipping vendor to fulfill customer orders.

Key characteristics of vendor relationships

Vendor relationships can vary by industry, contract type, and risk level, but they often share several features:

• Transactional or ongoing: Some vendor relationships are one-time transactions; others involve recurring orders or retainer agreements.
• Contractually governed: A written agreement defines obligations, payment terms, and remedies for non-performance.
• Third-party status: Vendors are generally separate from the purchasing business. They are not employees, partners, or owners unless another relationship also exists.
• Variable risk exposure: A business may face supply chain, quality, data security, regulatory, or customer-service risk if a key vendor underperforms.

Vendors vs. contractors

A vendor typically sells a product or standardized service, often to multiple clients simultaneously. A contractor is usually engaged for a specific project, often with greater integration into the client’s operations. Both are generally independent third parties, not employees, but the legal treatment of each can differ depending on the nature of the engagement.

Considerations when working with vendors

Vendor relationships carry legal, tax, and compliance obligations that businesses often underestimate at the outset. These considerations are worth addressing before a vendor agreement goes into effect.

• Written terms reduce risk: A vendor agreement should define deliverables, pricing, payment terms, service levels, deadlines, termination rights, confidentiality, intellectual property, insurance, liability, and dispute resolution procedures.
• Vendor vetting supports reliability: Businesses should review a vendor’s reputation, experience, pricing, references, licensing, insurance, and financial stability. For vendors handling sensitive data, businesses should also review data security practices.
• Tax reporting may apply: Businesses may need to request Form W-9 and file Form 1099-NEC or another information return when vendor payments meet IRS reporting rules. Payments for services are treated differently from payments for goods, and exceptions apply.
• Compliance obligations may apply: In regulated industries such as healthcare, finance, food service, construction, or transportation, businesses may need to maintain vendor licenses, insurance certificates, safety records, data security terms, or other compliance documents.
• Licensing and permits may apply: Vendors may need business licenses, professional licenses, health permits, sales tax permits, or seller’s permits, depending on what they sell and where they operate. Buyers should confirm licensing when the vendor provides regulated goods or services.

Related terms

These related terms can help explain how vendors connect to contracts, payments, and tax reporting:

• Seller’s permit: A state-issued license required for vendors selling taxable goods or services.
• Purchase order: A purchase order is a buyer’s document that requests goods or services from a vendor under stated terms.
• Invoice: An invoice is a vendor’s request for payment for goods or services provided.
• Independent contractor: An independent contractor is a person or business that performs services while generally controlling how the work is done.
• Form W-9: Form W-9 gives a payer the vendor’s taxpayer identification information for federal tax reporting.
• Form 1099-NEC: Form 1099-NEC reports certain nonemployee compensation paid in the course of a trade or business.

FAQs about vendors

Is a vendor the seller or the buyer?

A vendor is the seller. The person or business that buys goods, services, or property from the vendor is the buyer or customer.

What is the difference between a vendor and a supplier?

People often use vendor and supplier interchangeably. In supply chain contexts, supplier may refer to a business that provides raw materials, parts, or components, while vendor may refer to a seller of finished goods, software, or services. The distinction depends on the industry and contract.

When is a business required to file a 1099 for a vendor payment?

A business may need to file Form 1099-NEC when it pays a nonemployee vendor for services, and the payment meets IRS reporting rules. Payments for merchandise alone generally do not require Form 1099-NEC. Many payments to corporations are also excluded, but exceptions apply, including certain attorney payments. Businesses should collect Form W-9 and check the current IRS instructions before filing.

Does every vendor relationship need a written contract?

Not every vendor relationship needs a detailed contract. A simple purchase may only need a receipt or invoice. A written vendor agreement is more important when the purchase involves recurring services, sensitive data, high dollar amounts, intellectual property, delivery deadlines, regulated work, or meaningful business risk.