Revolving Credit Facilities and Liquidity Backstops
A revolver is a pre-arranged line of credit a company can draw down and repay repeatedly, sized less for everyday funding and more as insurance against a sudden cash crunch.
Prerequisites: Net Debt and What Counts as Debt-Like
Most corporate debt is a fixed amount, borrowed once and repaid on a schedule. A revolving credit facility — a "revolver" — works more like a credit card with a company-sized limit: a bank commits to lend up to a set amount whenever the borrower wants it, the borrower draws it down, repays it, and can draw it down again, all within the facility's term. The company pays a small ongoing fee on the undrawn portion, plus interest only on whatever it actually borrows.
A revolver's real value is often not the cash it provides day to day but the certainty that cash will be there if needed. It functions as a liquidity backstop — insurance against a sudden shortfall — as much as it functions as working capital financing.
Why size matters more than usage
A retailer's cash flow is seasonal: it builds inventory ahead of a holiday season, spending cash for months before sales convert that inventory back into cash. A revolver lets it draw down during the buildup and repay once sales come in, rather than carrying a permanent pile of debt sized for its worst month of the year. Many companies with a revolver never draw on it at all in a normal year — the facility exists purely as a backstop, so that if a bad quarter, a lost customer, or a market disruption suddenly strains cash, the company has guaranteed access to liquidity rather than having to scramble for a new loan under duress, exactly when lenders are least willing to extend one.
In words: the company pays a fee, typically a fraction of a percent, on whatever part of the facility it isn't currently using — the price of keeping the option to draw available.
Worked example
A company arranges a $300 million revolver with a 0.375% commitment fee on the undrawn balance and a 5.5% interest rate on any drawn amount.
- Quiet quarter, nothing drawn: it pays , i.e. $1.125m for the year in commitment fees, and nothing else — the cost of having the option.
- Stress quarter, $150 million drawn to cover a cash shortfall: it pays interest of , i.e. $8.25m (annualized) on the drawn portion, plus the commitment fee of , i.e. $0.5625m on the remaining undrawn $150 million.
The facility flexes with actual need — the company isn't paying full interest on $300 million it doesn't currently require, but the $300 million is there the moment it does.
What this means in practice
Rating agencies and lenders look closely at how much of a company's revolver is undrawn as a measure of available liquidity — a company that has already drawn most of its revolver has burned through its backstop and looks materially riskier than one with the same debt load but an untouched facility sitting behind it. Revolvers also typically sit at the top of a company's capital structure, secured and first to be repaid, which is why they usually carry the lowest interest rate of any of a company's debt instruments.
An undrawn revolver is not guaranteed to be available exactly when a company needs it most — most revolvers include a "material adverse change" clause or a financial covenant test that lets the bank refuse a draw request if the company's condition has deteriorated too far, which is precisely the scenario the company was counting on the revolver to cover.
Further reading
- Rosenbaum & Pearl, Investment Banking (ch. on leveraged loans)
- Fabozzi, Bond Markets, Analysis, and Strategies (ch. on bank loans)