# What is RFI, RFP and RFQ?

> RFI, RFP and RFQ are the three sequential procurement documents buyers send to vendors. An RFI (request for information) surveys who exists and what they broadly do. An RFP (request for proposal) asks a shortlist how they would solve a defined problem. An RFQ (request for quotation) asks for firm pricing on an already-specified scope.

Last updated: 2026-10-28

## What is an RFQ?

An RFQ (request for quotation) is a document a buyer sends to several vendors asking for firm prices and terms on a scope that is already specified — the items, quantities, delivery and service level are fixed, and only price and conditions are being compared. It differs from an RFP, which asks vendors to propose how they would solve the problem, and from an RFI, which gathers non-binding information about the market.

## How RFI, RFP and RFQ differ

The three documents differ in what is still open. An RFI assumes the buyer does not yet know the shape of the market — responses are expected to be broad and are not binding. An RFP assumes the problem is understood but the solution is not, so vendors are invited to propose an approach and are scored on it. An RFQ assumes both are settled and only price and terms remain.

Running them out of order is the common failure. Issuing an RFP before requirements are written produces proposals that cannot be compared, because each vendor answered a slightly different question. Issuing an RFQ too early gets firm-looking numbers against a scope that then changes, which is how implementation overruns start.

Not every purchase needs all three. A commodity renewal may need only an RFQ. A first-of-its-kind system may need all three across several months. The judgement is about how much is genuinely unknown.

The labour in all three is the same and is largely clerical: distributing the same questions to many vendors, chasing responses, and normalising answers that arrive in different formats into something comparable. That normalisation is what structured agent-to-agent exchange removes — every vendor is asked in the same shape, so the answers arrive already aligned.

## Related terms

- [RFP automation](https://agent-door.com/glossary/rfp-automation)
- [Vendor evaluation](https://agent-door.com/glossary/vendor-evaluation)
- [Agent-to-agent commerce](https://agent-door.com/glossary/agent-to-agent-commerce)
- [Ringi (稟議)](https://agent-door.com/glossary/ringi)

## Frequently asked questions

### What is an RFQ?

An RFQ (request for quotation) is a request to vendors for firm prices and terms on a scope the buyer has already specified, so that the only things being compared are price and conditions.

### What is the difference between an RFQ and an RFP?

An RFP asks vendors how they would solve a problem, and their proposals are scored on the approach. An RFQ comes once the solution and scope are settled, and asks only for price and terms. If you cannot yet write the specification, you need an RFP, not an RFQ.

### Can you skip the RFI?

Often, yes. If the category is well understood and the credible vendors are already known, an RFI adds weeks without adding information. It earns its place when the market is unfamiliar or when internal stakeholders disagree about what is even possible.

### How many vendors should receive an RFP?

Enough for genuine comparison, few enough to evaluate properly — commonly three to five. Sending to more only helps if you can actually read and score every response; otherwise the extra proposals are discarded on impression rather than on merit.

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