The government’s hard shift away from lowest-price, technically acceptable evaluations has magnified the importance of past performance in many competitive acquisitions. For start-ups and other companies new to the federal marketplace, past performance requirements can present a significant barrier to success.

Oftentimes, companies with little or no past performance of their own can offer the past performance of another entity, such as a subcontractor or joint venture partner. But the rules surrounding the use of another entity’s past performance are often misunderstood–and recently, the rules have evolved quickly.

Here are five things you should know about using the past performance of a subcontractor, joint venture partner, or affiliate.