What is the process for disputing a negative CPARS rating?

You can dispute a negative CPARS rating by submitting a rebuttal statement through the CPARS system. The contractor receives a copy of the evaluation, including any narrative ratings, and has 14 calendar days from the date of receipt to submit comments, rebutting statements, or additional information to the assessing official (FAR 42.1503(d)). The assessing official then reviews the contractor's input and may revise the evaluation. If the assessing official does not change the evaluation, the contractor's comments are attached to the evaluation in CPARS. If the contractor and the assessing official cannot agree, the review official makes the final determination (FAR 42.1503(d)).

Effective evidence includes objective data, not just claims. You need project documentation, such as approved deliverables, meeting minutes, and change orders signed by the government, that contradict the negative assessment. Internal communication logs showing timely responses and resolutions, and client emails confirming satisfaction with specific tasks or outcomes, are also strong evidence. Focus on measurable achievements and direct evidence of meeting contractual requirements. The goal is to demonstrate that the rating is factually inaccurate or inconsistent with documented performance.