Price to sales compares the value of the company to its total sales over the last year. It's useful for companies with low or negative earnings, where P/E is less meaningful.
How it relates
Where it fits
The price-to-sales ratio (P/S) compares a company's market capitalisation to its revenue over the trailing twelve months. This valuation metric is particularly valuable for evaluating companies with negative or highly volatile earnings, where P/E ratios are meaningless or unstable. Revenue is generally harder to manipulate than earnings, making P/S a more stable indicator.
The calculation can be done two equivalent ways:
P/S Ratio = Market Capitalisation / Total Revenue (TTM) P/S Ratio = Share Price / Revenue Per Share (TTM)
For example, a company with a $5 billion market cap generating $2 billion in annual revenue has a P/S ratio of 2.5. Investors pay $2.50 for every $1 of sales.
Interpreting P/S varies dramatically by industry:
- Software/SaaS: P/S of 5-15+ is common due to high margins and recurring revenue
- Retail/groceries: P/S of 0.2-1.0 typical for low-margin, high-volume businesses
- Industrial: P/S of 0.5-2.0 for moderate-margin manufacturing
- Early-stage tech: P/S can exceed 20+ when profitability is years away
Key applications:
- Loss-making companies: P/S allows valuation when P/E is undefined
- Turnaround situations: Revenue may persist while earnings temporarily disappear
- Cyclical troughs: P/S remains meaningful when cyclical earnings collapse
- Cross-border comparisons: Revenue is more comparable than earnings affected by different accounting standards
Critical limitations:
- Ignores profitability: A company can have low P/S yet never turn profitable
- Margin differences: A high-margin business deserves higher P/S than a low-margin one with identical revenue
- Capital intensity ignored: Some businesses need massive investment to generate sales
Always compare P/S within industries and consider it alongside margin trends. A declining P/S might signal opportunity, or it might reflect deteriorating growth prospects or margin compression that the market has correctly identified.