The simplest safety test
A company with more cash than debt can survive a bad year, keep investing when rivals cut back, and never be forced to sell shares at a low price to raise money. That is why cash versus debt is one of the core checks.
| Reading | Meaning |
|---|---|
| Cash above debt (net cash) | Strong. Room for opportunities |
| Debt up to about 3 times cash | Manageable if cash flow is healthy |
| Debt above 3 times cash | Warning. Check cash flow and maturities |
See total cash, total debt and cash to debt in the glossary.
What cash buys
- Survival: payroll and research keep going through a downturn.
- Opportunity: buying competitors or assets cheaply when others are forced to sell.
- Income: when interest rates are high, cash earns real money. $10 billion at 4 to 5% brings in $400 to $500 million a year.
- No dilution: no need to issue new shares at the bottom.
Judging debt properly
Debt is not automatically bad. What matters is whether the business can carry it.
- Net debt to Free cash flow. Net debt (debt minus cash) divided by yearly free cash flow says how many years it would take to pay off. Under 3 years is comfortable.
- Fixed or floating rate. Floating-rate debt gets more expensive when rates rise.
- Maturities. A large amount due soon, during a bad market, is dangerous even for a good business.
- Interest coverage. Operating profit should comfortably cover interest payments.
Unprofitable companies
For a company still losing money, the key number is cash runway: cash divided by yearly cash burn. Under two years means it will probably need to raise money, often by selling new shares.
Net cash and market cap
Net cash as a share of market cap tells you how much of the price is simply cash in the bank. See net cash to market cap. For more, see The balance sheet and Debt-to-equity ratio.
See also
- The balance sheet How to read a balance sheet: assets, liabilities and shareholders' equity, the checks that matter, and how to judge a company's financial health.
- Free cash flow Free cash flow is the cash a business generates after investing in itself. How it is calculated, why it can differ from earnings, and FCF yield.
- Debt-to-equity ratio The debt-to-equity ratio compares what a company owes with what its owners have put in. How to read it, typical levels, and where it misleads.
- How to research a company A step-by-step way to research a stock: understand the business, run a SWOT, apply the double-or-halve test, then check the numbers and valuation.
Pages that link here: Building your investing knowledge, Economic moats, Fundamental analysis, Fundamentals checklist, Fundamentals vs technicals, How to read financial statements, Stock screening and scoring, The cash flow statement
Last updated September 30, 2026. Education only, not investment advice.