An OCI is a structural conflict — distinct from a personal conflict of interest — that arises when a contractor's existing or prior work creates an unfair competitive advantage or compromises the contractor's ability to render impartial advice. FAR Subpart 9.5 identifies three categories. Biased ground rules occurs when a contractor helped write a specification, statement of work, or evaluation criteria for a procurement it later bids on. Impaired objectivity occurs when a contractor evaluates its own products, audits its own work, or provides advice that touches its own commercial interests. Unequal access to information occurs when a contractor obtained non-public source-selection-sensitive information through a prior contract that gives it an advantage.
OCI identification and mitigation is the contracting officer's responsibility under FAR 9.504. The CO can mitigate, neutralize, or avoid the conflict — the most common mitigation is firewalling the conflicted personnel and divesting affected work, sometimes formalized as an OCI Mitigation Plan submitted with the proposal. Where mitigation is insufficient, the CO can exclude the offeror from competition. OCI determinations are heavily fact-driven and routinely litigated — GAO and the COFC have produced extensive case law clarifying when each category applies and what mitigation is acceptable.
For small contractors, OCI risk grows with customer-portfolio breadth. Firms supporting both program offices and acquisition oversight, or both prime competitors and the government customer, accumulate exposure quickly. Tracking OCI posture by customer and contract is a practical capture-pipeline input, not a legal abstraction.