RFP vs RFI vs RFQ: What's the Difference and When to Use Each

Procurement teams use three main documents to evaluate vendors: the RFP, RFI, and RFQ. They sound similar but serve very different purposes. Using the wrong one wastes time, both yours and the vendors'.

Quick comparison

	RFP	RFI	RFQ
Full name	Request for Proposal	Request for Information	Request for Quote
Purpose	Evaluate solutions and select a vendor	Gather market intelligence	Get pricing for a defined scope
When to use	Complex procurement with multiple evaluation criteria	Early research phase, you're still defining needs	You know exactly what you need and just want pricing
Response detail	Comprehensive: approach, qualifications, pricing, timeline	Informational: capabilities, experience, general approach	Pricing-focused: line items, totals, terms
Typical timeline	4-8 weeks	2-4 weeks	1-3 weeks
Evaluation	Weighted scoring across multiple criteria	Qualitative assessment	Price comparison

Request for Information (RFI)

An RFI is a research tool. You send it when you're exploring the market and don't yet know enough to write a detailed RFP.

Use an RFI when:

You're entering a new market or buying something unfamiliar
You want to understand what's possible before defining requirements
You need to identify potential vendors
You're comparing build vs. buy options

What to include:

Brief description of your challenge or need
Questions about the vendor's capabilities and approach
Questions about industry trends or best practices
Request for case studies or references

What NOT to include:

Detailed specifications (you don't have them yet)
Pricing requests (save that for the RFQ or RFP)
Commitment to purchase (an RFI is not a promise to buy)

An RFI typically precedes an RFP. The information you gather helps you write a better, more targeted RFP.

Request for Proposal (RFP)

An RFP is the most comprehensive procurement document. It asks vendors to propose a complete solution: approach, qualifications, pricing, timeline, and team.

Use an RFP when:

The project is complex with multiple requirements
You need to evaluate vendors on criteria beyond price
Multiple vendors could reasonably do the work
You need to document and justify the selection process

What to include:

Detailed project overview and scope of work
Specific questions about approach and methodology
Vendor qualification requirements
Technical specifications and integration needs
Pricing structure and format
Evaluation criteria with weights
Timeline and submission instructions

The RFP is the workhorse of enterprise procurement. It generates detailed, comparable responses that enable objective vendor selection.

Request for Quote (RFQ)

An RFQ is straightforward: you know what you want, and you need pricing. There's no ambiguity about the scope; you're comparing vendors on cost and terms.

Use an RFQ when:

The scope is well-defined and standardized
You're buying a commodity product or clearly specified service
Price is the primary decision factor
You've already qualified the vendors (maybe through an earlier RFI or RFP)

What to include:

Exact specifications of what you're buying
Quantities and delivery requirements
Required format for pricing (line items, bundles, etc.)
Payment terms and conditions
Deadline for quotes

What NOT to include:

Open-ended questions about approach (the approach is defined)
Requests for case studies or references (you've already vetted them)

How they work together

The most rigorous procurement processes use all three in sequence:

RFI. Research the market, identify capable vendors, understand what's possible.
RFP. Evaluate shortlisted vendors on approach, qualifications, and value.
RFQ. Get final pricing from the top 2-3 vendors.

Most small-to-mid-size organizations skip straight to an RFP or RFQ depending on complexity. That's fine. Not every procurement needs all three steps.

Common mistakes

Using an RFP when an RFQ would suffice. If you know exactly what you want and just need pricing, don't burden vendors with a 50-question RFP.
Using an RFQ when you need an RFP. If the project has real complexity and you need to evaluate approaches, a price-only comparison will miss important differences.
Skipping the RFI on unfamiliar procurements. Jumping straight to an RFP without market research often produces a poorly scoped RFP that gets poor responses.
Treating an RFI like a commitment. Vendors invest less in RFI responses than RFPs. Don't expect proposal-level detail from an informational request.

Simplify the process with AI

Whether you're writing an RFP, RFI, or RFQ, the drafting process takes time. Strutter uses AI to generate complete procurement documents from a plain-language description, then handles vendor invitations, response scoring, and comparison automatically.

Try Strutter free. Create your first RFP in minutes.