FAR 14.304 Bid-Day Timing: Late Bids, Modifications, and Withdrawals
On federal construction projects operating under sealed bidding, the clock is non-negotiable. Missing a bid deadline by even a fraction of a second can disqualify a general contractor or trade subcontractor from consideration, regardless of how competitive the estimate might be. Federal Acquisition Regulation FAR 14.304 establishes exact requirements for submitting, modifying, and withdrawing bids. Navigating these rules requires an orderly, step-by-step process on bid day so that your pricing arrives legally on time.
Step One: Identify the Exact Submission Deadline and the 4:30 p.m. Default
Bidders are responsible for submitting bids, modifications, and withdrawals so they reach the designated government office by the exact time specified in the invitation for bid (IFB). During pre-bid preparation, estimators must check the solicitation documents carefully to verify the designated location and deadline. Under FAR 14.304(a), if no specific hour is listed in the IFB, the official cutoff time for receipt is 4:30 p.m., local time, at the designated government installation on the due date. Contractors assembling an interior framing or ceiling package must pair their bid-day routine with a disciplined review, such as a Bid Day Checklist for Drywall and Ceiling Subcontractors, to ensure final numbers are transmitted long before the official cutoff.
Step Two: Choose an Authorized Transmission Method
A bid, revision, or withdrawal must use a transmission method authorized by the IFB. Permitted methods can include:
- Regular mail delivered to the address identified in the IFB.
- Electronic commerce systems specifically authorized by the contracting office.
- Facsimile transmissions, when expressly permitted by the solicitation under applicable provisions.
If an unapproved method is used, or if the transmission arrives late at the specified office, it is classified as late and will not be considered unless it satisfies narrow statutory exceptions.
Step Three: Verify Exceptions for Late Submissions
Any bid, modification, or withdrawal received after the exact time specified is late. It cannot be considered unless it is received before award is made, the contracting officer determines that accepting it would not unduly delay the acquisition, and it meets one of two specific standards:
- Electronic commerce exception: If transmitted through an authorized electronic commerce method, the submission was received at the initial point of entry to the government infrastructure not later than 5:00 p.m. one working day prior to the date specified for receipt of bids.
- Government control exception: Acceptable evidence proves the submission was received at the government installation designated for receipt of bids and was under government control prior to the time set for receipt.
Under FAR 14.304(c), acceptable evidence to establish timely physical receipt includes a time/date stamp placed on the bid wrapper by the installation, other documentary receipt records maintained by the facility, or oral testimony and statements from government personnel.
Step Four: Apply the Favorable Modification Exception
A strict exception exists for post-deadline adjustments from an offeror who is already in line for award. Under FAR 14.304(b)(2), a late modification of an otherwise successful bid that makes its terms more favorable to the government will be considered at any time it is received and may be accepted. If a bidder submits a late price reduction or more favorable terms on an offer that was already the winning bid, the contracting officer has the authority to incorporate those terms prior to contract award.
Step Five: Execute Proper Bid Withdrawals Before the Cutoff
A bidder may withdraw its bid by written notice received at any time before the exact time set for bid opening. If the solicitation authorizes facsimile bids, withdrawals may also be handled by facsimile prior to the exact deadline, subject to the conditions specified in the provision at 52.214-31, Facsimile Bids. A bidder or authorized representative may also withdraw an offer in person prior to the deadline, provided the person's identity is established and they sign a receipt for the bid. When an electronically transmitted bid is withdrawn, the government must not view the received data and, where practicable, must purge the files from primary and backup data storage systems. Estimators should also review clear terms regarding Bid Exclusions and Clarifications well ahead of the final submission deadline.
Step Six: Account for Unexpected Emergencies and Retention Rules
If an emergency or unanticipated event interrupts normal government processes so bids cannot be received by the exact time specified, and urgent requirements prevent an amendment, the deadline is extended. In that scenario, the time is extended to the same time of day specified in the IFB on the first work day that normal government operations resume. If a bid or modification arrives late and is not considered, the contracting officer must promptly notify the bidder. Late bids not considered must remain unopened, unless opened solely for identification, until after award, when they are retained alongside other unsuccessful bids. Any bid bond or bid guarantee must be returned to the bidder.
Sources
Published October 30, 2026. No affiliate links on this page. Facts come from the sources linked above; check them for updates.