Red flag: heavy debt load

Interpretation

Triggered when long-term debt exceeds five years of free cash flow.

Formula

Trigger: long-term debt ÷ free cash flow > 5

Why it matters

At more than five years of FCF, debt stops being background and starts driving outcomes. Interest consumes cash flow, refinancing becomes a recurring bet on market conditions, and a downturn that halves FCF turns a 5x ratio into 10x overnight. Leveraged companies lose optionality precisely when it is most valuable — forced to cut investment, sell assets, or issue shares at depressed prices while stronger competitors advance.

What good looks like

When triggered, look at three things: the maturity schedule (debt due within two to three years is the acute risk; long-dated fixed-rate debt is much softer), the stability of the cash flow (5x on a utility is routine; 5x on a cyclical is dangerous), and the trend (rising leverage to fund buybacks at high prices is the worst pattern; falling leverage after an acquisition is often fine). Cash on hand matters too — check cash/debt for the net position.

Caveats

The denominator is one year of FCF, so a temporarily weak year can trigger the flag at a company whose normal cash flow covers debt comfortably. Only long-term debt is counted — short-term borrowings and lease obligations are excluded, so true leverage can be higher than shown. Some businesses with contractual, utility-like revenue sustain high leverage safely for decades.