RFP, RFI and RFQ
Three different buyer documents that get treated as one. Which one you've received tells you where the buyer is and how much influence you still have.
Also called: request for proposal, request for information, request for quote, RFx
Three documents, often lumped together as “RFx,” that arrive at different points in a buying process and mean different things about your position.
RFI — request for information. Early. The buyer is mapping the market and does not yet know what they want to buy. Questions are broad, capability-level, and often identical across a dozen vendors. Low effort to answer, low commitment on their side.
RFP — request for proposal. The buyer knows roughly what they want and is asking how you would deliver it, at what price, with what evidence. This is the heavy one: scenarios, references, security sections, implementation plans, commercial terms.
RFQ — request for quote. The requirement is already specified, sometimes precisely enough that the specification came from a vendor. The buyer is comparing price against a fixed scope.
What the distinction is actually for
The document type tells you how much influence you still have.
An RFI is the point where requirements are still being formed. If you are engaged at RFI stage and asking good questions, you can shape what the eventual RFP asks for. An RFP means the requirements are largely set — you are competing on how well you meet someone else’s definition. An RFQ that arrives cold, with a detailed specification you had no part in, frequently means the specification reflects a competitor’s product.
That is a qualification signal, not a formatting detail. Receiving a highly specified RFQ from a buyer you have never spoken to is one of the clearest indicators available that you are providing a competitive quote for a decision already made.
The trap
Teams tend to build one response process and apply it to all three. That produces two failures at once: over-investing senior hours in RFIs that were never going to convert, and under-investing in the RFP where the deal is actually decided.
The other common error is treating a document type as a stage. It isn’t. Some buyers run RFI then RFP then RFQ in sequence; plenty issue a single RFP with RFQ-level specificity; some skip the formal process entirely and then send a security questionnaire that carries more weight than any of them.
What matters is the same question in every case: is there a real forcing event, a route to the person who signs, and a reason you win here — or are you the third quote?
Deeper: You’re not bidding. You’re donating. · Security questionnaire
Rob Roberts is the founder of Widenine Solutions. In B2B SaaS and life sciences since 2011, running Deal Desk and Sales Operations since 2018 — including a Deal Desk built from scratch governing a $25M+ pipeline, and a 2,000+ vetted Q&A library behind 5,000+ responses built and audited.