Price-to-Sales Ratio (P/S).

The price-to-sales ratio (P/S) divides a company's market capitalization by its trailing twelve-month revenue, expressing how much investors are paying for each dollar of sales the business generates. Unlike the price-to-earnings ratio, the P/S ratio is calculable even when a company has no profits — making it one of the few valuation multiples that can be applied to early-stage growth businesses, startups, and turnaround situations where earnings are temporarily negative. Investors using the P/S ratio typically benchmark it against historical averages for the specific company, sector peers, and the broader market to assess whether a given multiple implies optimism, pessimism, or fair value. A P/S of 1.0 means the market values the company at exactly one year's worth of revenue — a figure that was once considered the ceiling for most industrial businesses. Today, high-quality software-as-a-service companies can sustain P/S multiples in the tens, reflecting the scalability and recurring-revenue nature of their business models. The ratio's weakness is that revenue can persist even when a business is deeply unprofitable; a company burning cash at an accelerating rate may carry a low P/S but represent poor value because its margins are structurally broken. Analysts typically use P/S alongside gross margin data — a business with a 70% gross margin can justify a much higher P/S than one with 20% margins, because more of each revenue dollar survives to fund operations and eventually generate profit.