Borrowing Base

What Is a Borrowing Base?

A borrowing base is a calculated ceiling on how much a company can draw from a loan secured by its operating assets. It is most common in asset-based lending arrangements, which are often structured as a revolving credit facility that lets the company borrow, repay, and borrow again up to a limit. Rather than setting a fixed loan amount, the lender ties available credit to the current value of specific assets the company pledges as collateral, most often trade receivables and inventory.

Because the value of those assets changes as sales are made, collected, and restocked, the borrowing base is recalculated regularly, often monthly and sometimes more often. Available credit rises and falls with the asset base, which is why the arrangement is described as self-adjusting.

How It Is Calculated

The lender starts with the gross value of each asset category, removes amounts it does not consider eligible, and applies an advance rate to what remains. Reserves are then subtracted for risks the lender identifies. A simplified version looks like this:

Borrowing Base = (Eligible Receivables × Receivables Advance Rate) + (Eligible Inventory × Inventory Advance Rate) − Reserves

Receivables that are long overdue, owed by customers in poor credit standing, or owed by related parties are typically excluded. Inventory may be limited to finished goods or capped in value. Advance rates are set below 100 percent so the lender keeps a margin against the possibility of a forced sale of the assets.

Why It Matters to Investors

For an individual investor reading a company's filings, the borrowing base shows how much of the company's credit is actually available at a given time, which can be a useful signal about liquidity. A company that is close to its borrowing base limit may have little room to fund operations or growth. Lenders also often include covenant terms tied to the borrowing base, and falling below required levels can trigger restrictions or default. Figures on available borrowing capacity are usually disclosed in quarterly and annual reports, often in the liquidity discussion of management's filings.