FAR 52.214-16—Minimum Bid Acceptance Period.
Plain-English Summary
FAR 52.214-16, Minimum Bid Acceptance Period, is a sealed bidding provision used in invitations for bids to establish how long a bid must remain open for Government acceptance. It defines the term “acceptance period,” gives the contracting officer authority to set a minimum number of calendar days, allows bidders to offer a longer period if they choose, and states that bids offering less than the required minimum must be rejected. The provision also makes clear that it overrides any conflicting acceptance-period language elsewhere in the solicitation. In practice, this protects the Government’s ability to evaluate bids, complete award actions, and make an award within a known time window without losing the bidder’s commitment. It also gives bidders a clear choice: hold the bid open for at least the stated minimum, or risk rejection if they shorten that period. The clause is especially important in IFBs because award is generally made to the responsive, responsible bidder whose bid is most advantageous, and the Government needs assurance that the bid remains available long enough for award.
Key Rules
Defines acceptance period
The provision defines “acceptance period” as the number of calendar days the Government has to award a contract from the solicitation’s bid receipt date. This definition controls how the period is measured and ties it directly to the bid opening/receipt timeline.
Overrides conflicting terms
Any acceptance-period language elsewhere in the solicitation is superseded by this provision. If there is a conflict, the terms in this clause control, so bidders and contracting staff must rely on the inserted minimum period.
CO sets minimum days
The contracting officer must insert the minimum number of calendar days the Government requires. This number should reflect the time needed to evaluate bids, resolve issues, and make award before the bid expires.
Bidders may extend period
Bidders may state a longer acceptance period in the space provided, but they are not required to do so. If they do, the Government may accept the bid within that longer period and the bidder remains bound for that extended time.
Shorter bids are rejected
A bid that allows less than the Government’s stated minimum acceptance period must be rejected. This is a responsiveness issue in sealed bidding because the bid does not meet a material solicitation requirement.
Acceptance creates binding duty
If the Government accepts the bid in writing within the applicable acceptance period, the bidder must perform all commitments made in the bid. The bidder’s obligation continues through the minimum period or any longer period it offered.
Responsibilities
Contracting Officer
Determine whether a minimum acceptance period is needed, insert the required number of calendar days, ensure the solicitation language is consistent, and reject any bid that offers less than the minimum. The contracting officer must also make award within the applicable acceptance period or obtain a valid extension if needed.
Bidder/Contractor
Keep the bid open for at least the Government’s minimum acceptance period, optionally propose a longer period, and honor the bid if the Government accepts it in writing within the applicable period. The bidder must avoid submitting a shorter period that would make the bid nonresponsive.
Agency/Procuring Activity
Structure the solicitation and award timeline so the minimum acceptance period is realistic for the procurement. The agency must coordinate internal review, evaluation, and approval actions to avoid letting bids expire before award.
Practical Implications
This clause is a timing safeguard: if award cannot be made before the bid expires, the Government may need to seek bid extensions or risk losing the ability to accept the bid.
A common pitfall is inserting an acceptance period that is too short for the actual procurement timeline, especially when evaluations, funding approvals, or higher-level reviews may take longer than expected.
Bidders should pay close attention to the minimum period and any space to propose a longer one; leaving the period blank or offering too little can make the bid rejectable.
Because the clause supersedes other solicitation language, contractors should not rely on general terms elsewhere in the IFB if they conflict with this provision.
Contracting officers should ensure the stated period is clear and calendar-day based, since ambiguity can create disputes over whether a bid remained open long enough for valid acceptance.
Official Regulatory Text
As prescribed in 14.201-6 (j) , insert the following provision in invitations for bids, except for construction, if the contracting officer determines that a minimum acceptance period must be specified: Minimum Bid Acceptance Period (Apr 1984) (a) "Acceptance period," as used in this provision, means the number of calendar days available to the Government for awarding a contract from the date specified in this solicitation for receipt of bids. (b) This provision supersedes any language pertaining to the acceptance period that may appear elsewhere in this solicitation. (c) The Government requires a minimum acceptance period of __________ calendar days [ the Contracting Officer shall insert the number of days ]. (d) In the space provided immediately below, bidders may specify a longer acceptance period than the Government’s minimum requirement. The bidder allows the following acceptance period: __________ calendar days. (e) A bid allowing less than the Government’s minimum acceptance period will be rejected. (f) The bidder agrees to execute all that it has undertaken to do, in compliance with its bid, if that bid is accepted in writing within- (1) The acceptance period stated in paragraph (c) of this clause; or (2) Any longer acceptance period stated in paragraph (d) of this clause. (End of provision)