The formula that caps how much a borrower may have outstanding under a facility at any moment, calculated from eligible collateral and reported on a recurring certificate.
The longer version
The borrowing base converts a pool of collateral into an availability number by applying eligibility rules and advance rates. Assets that fail an eligibility test drop out entirely, which is why the definitions section of the credit agreement carries more weight than the advance rate itself.
The certificate is the operational artifact. It arrives monthly or quarterly, it has to tie to the underlying reporting, and a lender that cannot show a current certificate for each period has a file gap. In a warehouse or a construction context the same logic applies to collateral schedules and work in place.
Common questions
- What makes collateral ineligible?
- The credit agreement defines it. Typical exclusions are assets past a stated age, assets subject to a competing lien, assets from a concentrated or affiliated counterparty, and anything the lender cannot perfect against.
- How often is a borrowing base certificate delivered?
- Monthly is the common cadence, with quarterly used on lower-risk facilities. The agreement also usually requires one at every draw.
- What happens if the base falls below the outstanding balance?
- The borrower has an overadvance and typically must repay the difference within a short cure period. Documenting when the shortfall was identified and when it was cured is part of the credit file.