IFB (Invitation for Bid)

Full Definition

An Invitation for Bid (IFB) is the solicitation method used in sealed bidding under FAR Part 14 — the oldest and most formal procurement method in federal contracting. The process requires four conditions per FAR 6.401: a complete and adequate specification or purchase description, two or more responsible bidders expected, the procurement lends itself to a firm fixed-price contract, and sufficient time for bid preparation and submission. Bids are opened publicly at a specified time and place, and the contract is awarded to the lowest-priced responsive (meets all solicitation requirements), responsible (has the capability, financial resources, and integrity to perform) bidder without any discussions or negotiations. Unlike negotiated procurements, the government cannot ask bidders to clarify or revise their offers. Late bids are rejected regardless of circumstances, with very narrow exceptions. IFBs result in firm fixed-price or fixed-price with economic price adjustment contracts.

Why It Matters

IFBs are most common in construction, supply, and maintenance contracts where specifications are clearly defined and competition is driven purely by price. For small businesses, IFBs can be lucrative if you have a lean cost structure, because technical sophistication beyond meeting specifications carries no weight. The key to winning IFBs is cost discipline: streamline your overhead, negotiate supplier pricing aggressively, and understand your true cost floor. Before bidding, verify you can meet every specification exactly as stated — there is no room for exceptions or deviations. Attend the pre-bid conference if offered, as it provides clarification on specifications and site conditions. Read every amendment carefully and acknowledge all of them in your bid, as failing to acknowledge an amendment can render your bid non-responsive. Start with smaller IFBs to build past performance before competing for larger sealed bid procurements.

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