10 Federal Contract Vehicles Every Vendor Should Know

A lot of businesses want to get into government contracting. But once they start exploring opportunities, they quickly run into unfamiliar terms:

• IDIQs
• BPAs
• Sources Sought
• Set-asides
• Different contract types

For many vendors, this is where things start to feel confusing. They see these terms in solicitations and announcements, but they're not always sure what they mean or how they affect the opportunity.

And if you don't understand the structure of the contract, it's hard to know:

• Whether the opportunity fits your business
• How vendors are selected
• What you're actually committing to

Understanding federal contract vehicles helps vendors make better decisions before they invest time preparing proposals. Here are the 10 contract vehicles you'll see most often.

1. IDIQ Contracts (Indefinite Delivery, Indefinite Quantity)

An IDIQ contract allows agencies to order supplies or services over time when the exact quantity isn't known in advance. Think of it as a pre-approved vendor list — once you're on the contract, agencies can issue task orders without going through a full competition each time.

Key characteristics:

• Contract has a ceiling value (maximum) and minimum guarantee
• Work is awarded through individual task orders
• Contract period typically 5 years (base + option years)
• Multiple vendors usually hold the same IDIQ (Multiple Award)

Good for: Established contractors who can handle ongoing work and want a steady pipeline of task orders without re-competing for every job.

2. Blanket Purchase Agreements (BPAs)

BPAs help agencies quickly buy commonly needed products or services from pre-approved vendors. They're essentially simplified purchasing agreements that reduce administrative burden for repeat purchases.

Key characteristics:

• Streamlined ordering process
• Often established against GSA Schedules
• No minimum or maximum guarantee required
• Individual orders are called "calls" against the BPA

Good for: Vendors who sell products or services agencies buy repeatedly — office supplies, IT equipment, training, maintenance services.

3. Multiple Award Contracts (MACs)

A Multiple Award Contract is when several vendors receive the same contract and then compete for individual task orders. This gives agencies flexibility while ensuring competition at the task order level.

Key characteristics:

• Several vendors hold the same contract
• Competition happens at the task order level
• Often combined with IDIQ structure
• Agencies can use "fair opportunity" to select vendors

Good for: Vendors who want access to ongoing opportunities without winning exclusive contracts.

4. GSA Schedules (Federal Supply Schedules)

GSA Schedules are long-term government-wide contracts that allow agencies to purchase products and services directly from approved vendors. Having a GSA Schedule is like having a pre-negotiated price list that any federal agency can buy from.

Key characteristics:

• 5-year base period with three 5-year options (20 years total)
• Pre-negotiated pricing with GSA
• Available to all federal agencies
• Simplified purchasing for buyers

Good for: Commercial businesses with established products or services, especially those targeting multiple agencies. Learn more about GSA Schedules →

5. Task Orders

Task orders are specific work assignments issued under larger contracts like IDIQs or MACs. Instead of a standalone contract, a task order defines a particular project or scope of work within the master contract's terms.

Key characteristics:

• Issued under existing contract vehicles
• Defines specific deliverables and timeline
• May be competed among contract holders or sole-sourced
• Faster procurement than new contracts

Good for: Vendors already on IDIQ or MAC contracts looking for new work without full re-competition.

6. Firm Fixed Price (FFP) Contracts

A Firm Fixed Price contract is exactly what it sounds like — the price is agreed upon in advance and generally doesn't change. The contractor assumes cost risk, but also keeps any savings from efficiency.

Key characteristics:

• Price is set at award and doesn't change
• Contractor bears cost overrun risk
• Contractor keeps savings from efficiency
• Most common contract type for defined scope

Good for: Projects with well-defined requirements where you can accurately estimate costs. Most small business contracts are FFP.

7. Time and Materials (T&M) Contracts

Time and Materials contracts pay vendors based on labor hours and materials used, plus a markup. These are used when the scope can't be precisely defined upfront.

Key characteristics:

• Payment based on hours worked × hourly rates
• Materials reimbursed at cost plus handling
• Usually has a ceiling price (not-to-exceed)
• Government bears more cost risk

Good for: R&D projects, consulting engagements, or work where requirements may evolve during performance.

8. Sources Sought Notices

A Sources Sought notice is a request used by agencies to research the market and identify vendors capable of performing work. It's not a solicitation — you can't win a contract from it directly — but it influences how the opportunity is structured.

Key characteristics:

• Market research tool, not a contract award
• Agencies gather capability information
• Helps determine if set-aside is appropriate
• Responding positions you for the actual solicitation

Good for: All vendors — responding to Sources Sought notices gets you on the agency's radar and can influence whether the contract is set aside for small businesses.

9. Set-Aside Contracts

Set-aside contracts are reserved for specific groups of small businesses, such as 8(a), HUBZone, SDVOSB (Service-Disabled Veteran-Owned), or WOSB (Women-Owned). Only businesses with the appropriate certification can compete.

Key characteristics:

• Competition limited to certified small businesses
• Helps agencies meet small business contracting goals
• Types: 8(a), HUBZone, SDVOSB, WOSB, Small Business
• Generally less competition than full-and-open

Good for: Certified small businesses looking for contracts with reduced competition. Learn about SBA certifications →

10. Request for Information (RFI)

A Request for Information is used by agencies to gather industry input before releasing a formal solicitation. Like Sources Sought, it's a market research tool — but RFIs often ask more detailed questions about capabilities, pricing approaches, or technical solutions.

Key characteristics:

• Gathering information, not awarding contracts
• Helps agencies refine requirements
• Your input may shape the final solicitation
• No obligation to respond (but you should)

Good for: Vendors who want to influence requirements and demonstrate expertise before the competition begins.

Which Contract Vehicle Is Right for You?

The right contract vehicle depends on your business model and where you are in your government contracting journey:

If you're...	Focus on...
Just starting out	Set-asides (if certified), Sources Sought responses, subcontracting under existing IDIQs
Selling commercial products	GSA Schedule, BPAs
Providing professional services	IDIQ contracts, Task Order competitions
Looking for steady work	MAC contracts, IDIQ vehicles

Next Steps

Understanding contract vehicles is just the first step. To actually win contracts, you need to:

1. Get registered — Complete your SAM.gov registration
2. Know your NAICS — Identify the right NAICS codes for your business
3. Find opportunities — Learn where to find contract opportunities
4. Get certified — Explore SBA certifications if you qualify

The government spends over $700 billion annually on contracts. Understanding how these contract vehicles work puts you ahead of most competitors who bid without understanding the game.