Calculating a ratio is easy; interpreting it is the analyst’s real work. A figure only makes sense in context.

The right habits

• Compare over time: a three-year trend matters more than an isolated value. Are we improving or slipping?
• Compare with the sector: a « good » ratio in manufacturing may be « bad » in retail. Every industry has its own norms.
• Cross-check the indicators: profitability, liquidity and debt are read together, never in isolation.

A highly profitable company that is heavily indebted and short of cash remains fragile. Conversely, modest but stable profitability with little debt can be very solid. Analysis means assembling these pieces into one overall picture.

Key takeaway: a ratio on its own says nothing. Trend, comparison and cross-checking are what reveal the truth.