Prime Underwriting Facility

Think about "prime" as in a "prime cut of meat." The best you can do. The prime rate is the lowest rate a lender will offer. Its reserved for low-risk, top-quality borrowers. It also serves as the basis for all other rates. Loans can be calculated as prime plus some number of percentage points.

With that in mind, the definition for prime underwriting facility becomes relatively simple. It's an underwriting facility where the interest rate equals the current prime rate. The underwriting facility typically takes the form of a note with a short-term maturity (somewhere between one and three years). It is a form of revolving underwriting facility, or RUF.