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RFP vs. RFQ vs. IFB vs. RFI: The Differences Explained

Getting Started
Updated June 2026
Stronger Built Team

Quick Answer

Public agencies use different solicitations depending on their needs. RFIs gather information; RFQs solicit pricing for standard commodities; IFBs invite sealed bids where the lowest cost wins; and RFPs evaluate technical approaches alongside pricing to determine the best overall value.

Navigating the Alphabet Soup of Procurement

If you're looking for government contracts, you'll quickly encounter several acronyms: RFI, RFQ, IFB, and RFP. While they all sound similar, they represent completely different procurement paths, with different rules for evaluation and award.

1. RFI: Request for Information

An RFI is a market research tool used by government agencies to gather information from the industry before drafting a formal solicitation. It is not a bid opportunity, and no contract will be awarded directly from it. However, responding to an RFI is highly strategic. It allows you to educate the agency about your capabilities, which can shape the scope of the subsequent RFP.

2. RFQ: Request for Quote

An RFQ is used when the agency knows exactly what it wants and is looking primarily for the best price. Typically used for standardized goods, equipment, or simple services (e.g., buying 500 office chairs or renting scaffolding). Proposals for RFQs are short, focusing mostly on price sheets and delivery schedules.

3. IFB: Invitation for Bid

An IFB is a formal, sealed-bid process. Like an RFQ, it is focused on price, but it is typically used for larger, more formal purchases (such as standard road repaving). The bids are opened publicly, and the agency is legally required to award the contract to the lowest-priced responsive and responsible bidder. There is no room for negotiation.

4. RFP: Request for Proposal

An RFP is used for complex projects where the agency is seeking a solution, not just a commodity. The agency evaluates proposals using a scoring rubric that weighs technical design, project management, staff experience, and pricing. This is the most common format for professional services, IT, consulting, and complex construction.

Summary Comparison

Understanding these documents helps you allocate your bidding resources. If you are a low-cost leader, focus on RFQs and IFBs. If you offer premium, high-quality expertise, look for RFPs where your technical score can offset a slightly higher price point.

RFP Response Writing

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Reviewed by the Stronger Built proposal team · Veteran-owned · Last updated June 2026