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Efficiency ratios

Two companies can grow revenue at identical 15 percent annual rates, maintain identical 20 percent profit margins, and carry identical debt levels—yet one is a far better long-term investment because it needs only a fraction of the capital to fuel that growth. The difference lies in efficiency: how quickly the company converts its assets into sales, and how effectively it collects cash from customers and pays suppliers. This difference determines whether a company is self-funding (generating enough internal cash to fund growth) or capital-starved (needing constant infusions of debt or equity to fund the same growth rate).

Efficiency ratios reveal whether a business is capital-light or capital-hungry. Asset turnover (revenue divided by total assets) asks: How much revenue does each dollar of invested capital generate? A software company with high asset turnover—generating six dollars of revenue per dollar of assets—is far superior to a manufacturing company with low turnover (one dollar of revenue per dollar of assets), because every percent of growth requires less new capital investment. That means more profit stays with shareholders rather than being reinvested to support growth. Inventory turnover and days sales outstanding reveal how much cash is locked up in operations and working capital. A retailer that turns inventory four times yearly is far more efficient than one that turns twice yearly, because it funds growth from cash generation rather than borrowed capital or equity dilution. The difference in working capital efficiency compounds into enormous shareholder value over years.

These ratios matter because they compound over decades. A business that requires 80 cents of capital for every dollar of revenue growth must spend heavily to scale, capping ultimate returns on equity and requiring constant refinancing. A business requiring only 20 cents of capital can reinvest profits to grow without diluting shareholders, allowing returns to compound exponentially. This chapter teaches you to calculate efficiency metrics, to interpret them in context (a luxury retailer's inventory turns differ vastly from a grocery chain's, and both are normal for their respective industries), and to use them to estimate how much capital a company will need to achieve growth targets.

Capital intensity and return on capital​

Capital-light businesses with high asset turnover can achieve superior returns on capital because they require less reinvestment to grow. Capital-intensive businesses struggle to achieve high returns because growth requires constant capital investment. Understanding the capital intensity of your target industry and company is essential to forecasting long-term returns. A capital-light business growing 10 percent with 10 percent returns on capital is superior to a capital-intensive business growing 10 percent with 10 percent returns, because the light business funds growth from profits while the intensive business dilutes shareholders to fund growth.

Seasonal and cyclical working capital​

Some businesses have working capital that swings dramatically with seasons (retailers build inventory before holiday selling season) or with business cycles (manufacturers stockpile materials before anticipated demand). Understanding these patterns is important for forecasting cash flow. A retailer that swells working capital in Q3 to fund Q4 selling might appear cash-flow positive at year-end when inventory is sold down. This chapter teaches you to adjust for seasonal and cyclical patterns so you see the true underlying efficiency.

Articles in this chapter​