Most protests default to GAO by habit. The right answer is a decision: each forum buys different leverage, and the wrong pick can cost the stay, the record, or the remedy that mattered.
| If your case needs… | Lean | Because |
|---|---|---|
| Performance stopped automatically | GAO | The CICA stay attaches to timely filing — no persuasion required. |
| An answer inside a proposal cycle | GAO | 100 calendar days, statutory. |
| Documents and testimony beyond the record | COFC | Record supplementation and discovery exist there in ways GAO practice can't match. |
| An injunction shaped to the harm | COFC | Courts craft relief; GAO recommends. |
| A second look after a GAO loss | COFC | Independent review remains available in proper cases. |
| Precedent that binds the agency next year | COFC | Judicial decisions carry differently than GAO recommendations. |
| Cost control on a modest procurement | GAO | Leaner process, leaner bills. |
GAO-first preserves the stay and gets a fast merits read; a COFC follow-on stays available where the record justifies it. Skipping GAO makes sense when its windows are already gone, when discovery is the case, or when the agency has a history of overriding stays — overrides themselves being challengeable at COFC. The choice is one conversation with the dates and the defect on the table.
Concurrent filings are constrained — GAO generally won't run a protest of a matter pending at COFC. Sequence, don't duplicate.
Override decisions are reviewable at COFC, and challenges succeed when the override's rationale was thin. The stay fight can be a case of its own — sometimes the decisive one.
Materially: GAO wins usually yield corrective action or recommendations agencies almost always follow; COFC wins are orders. Match the remedy to what your business actually needs.