Unlock the power of the price-to-sales ratio when looking at companies to invest in. Learn how it works, how to use it to value stocks, its drawbacks, and more

The price-to-sales ratio is a financial metric that helps investors and financial advisors evaluate the value of a company. This ratio is widely used in fundamental analysis and portfolio management.
In this article, Wealth Professional Canada will shed light on what the price-to-sales ratio is, how it works, and why it matters for financial advisors in Canada.
What is the price-to-sales ratio?
The price-to-sales (P/S) ratio measures the value that the market places on a company’s sales. It shows how much investors are willing to pay for each dollar of a company’s sales. Watch this video to better understand what this measure is:
If you want to conduct fundamental analysis, you should not only study the firm’s financial statements but also assess its ratios and metrics.
Why use it?
Financial advisors use the P/S ratio to evaluate whether a stock is overvalued or undervalued relative to its sales. This ratio is especially useful when comparing companies within the same industry. It is also helpful when a company does not have positive earnings, making other valuation metrics like the price-to-earnings ratio less meaningful.
The P/S ratio provides a quick snapshot of how the market values a company’s ability to generate revenue. It can help financial advisors identify potential investment opportunities and avoid overvalued stocks.
How to calculate the price-to-sales ratio
To calculate the P/S ratio, you need two pieces of information: the company’s market capitalization and its total sales for the most recent year.
Market capitalization is the total value of a company’s outstanding shares, calculated by multiplying the share price by the number of shares.
Total sales, also called revenue, is the amount of money the company earned from its business activities during the year.
The P/S ratio is calculated by dividing a company’s market capitalization by its total sales or revenue over a specific period, usually one year. Here’s the formula:
For example, if a certain company has a market capitalization of $500 million and annual sales of $250 million, its P/S ratio would be $2. This means investors are willing to pay $2 for every $1 of the company’s sales.
Interpreting the P/S ratio
A low P/S ratio might suggest that a stock is undervalued, while a high ratio might indicate overvaluation. However, the interpretation depends on several factors, including the industry and the company’s growth prospects. Its profitability should also be considered.
A low P/S ratio can also be attractive if the company has strong growth potential or is temporarily out of favor with investors. A high P/S ratio might be justified if the company has high profit margins, strong growth, or a dominant market position.
It's vital to compare the P/S ratio with those of similar companies in the same industry. Different industries have different average ratios, so what is considered low in one sector might be high in another.
Benefits and limitations of price-to-sales ratio
The P/S ratio offers several upsides for financial advisors:
- it is simple to calculate and easy to understand
- it allows for quick comparisons between companies of different sizes
- sales figures are less likely to be manipulated than earnings, making the ratio more reliable in some cases
- it can be used even when a company is not profitable, which is common for startups or companies in turnaround situations
While the P/S ratio is a useful tool, it has limitations that financial advisors should consider:
- the P/S ratio does not account for profitability; a company with high sales but low or negative profits might still have a low P/S ratio
- it does not consider debt levels or capital structure, which can affect a company’s risk profile
- it might not be meaningful for companies with irregular or volatile sales
- it should not be used in isolation but as part of a broader analysis
Using the price-to-sales ratio in local markets
In Canada, the P/S ratio is commonly used by financial advisors and analysts. The ratio is especially relevant for sectors like technology and energy, where earnings can be volatile or negative.
It’s helpful to look at the P/S ratio alongside other metrics like price-to-earnings (P/E) ratio. This multi-metric approach provides a more complete picture of a company’s valuation.
Other considerations for P/S ratio
This valuable metric has an impact on several elements:
Various industries
Industries vary widely in their usual P/S ratios. For example, technology companies often have higher ratios due to strong growth expectations. On the contrary, retail or manufacturing companies might have lower ratios.
Financial advisors should always compare a company’s P/S ratio to the average for its industry. This helps ensure that the analysis is meaningful and avoids misleading conclusions.
Growth stocks
Growth stocks often have high P/S ratios because investors expect future sales and profits to increase rapidly. In these cases, a high P/S ratio might not be a red flag if the company is delivering strong revenue growth and has a clear path to profitability.
Financial advisors should look at sales growth rates, profit margins, and competitive advantages when evaluating high P/S stocks. It is also beneficial to assess whether a company’s stock can maintain its growth and justify its valuation.
Check out the role of P/S ratio in valuation:
Value investing
Value investors often seek companies with low P/S ratios, believing that the market has undervalued their sales potential. However, a low ratio alone does not guarantee a good investment.
Financial advisors should investigate why the ratio is low and whether the company faces challenges that could limit its recovery. A low P/S ratio might be a sign of opportunity, but it can also indicate underlying problems such as declining sales, weak demand, or industry disruption.
Profitability
The P/S ratio does not consider profitability, which is a critical factor in a company’s long-term success. Two companies with the same P/S ratio might have very different profit margins and earnings potential.
Financial advisors should use the P/S ratio in combination with profitability metrics such as net margin and return on equity. This helps provide a balanced view of the company’s financial health.
Debt
The price-to-sales ratio does not reflect a company’s debt levels. A company with high sales and a low P/S ratio might still be risky if it has significant debt. Financial advisors should review the company’s balance sheet and consider debt-to-equity and interest coverage ratios as part of their analysis.
Company size
Large companies often have lower P/S ratios than smaller, high-growth firms. This is because large companies might have slower growth prospects and face more competition. Financial advisors should consider company size and growth stage when interpreting the P/S ratio.
Market cycles
Market conditions can affect the P/S ratio. During bull markets, ratios tend to rise as investors become more optimistic. In bear markets, ratios often fall as valuations decline. Financial advisors should be aware of market trends and avoid relying solely on historical averages.
Local regulations
You need to be certain that sales figures are consistent and comparable when calculating the P/S ratio. Differences in accounting standards or reporting periods can affect the accuracy of the ratio.
International comparisons
When comparing Canadian companies to international peers, financial advisors should consider differences in tax policies and market conditions. The P/S ratio can vary widely between countries and regions.
Investment strategies
You can use the P/S ratio in various investment strategies. For instance, it can help identify undervalued stocks for value-oriented portfolios.
The P/S ratio can also highlight high-growth opportunities in emerging sectors. Plus, it is useful for screening large numbers of stocks and narrowing down potential investments.
Portfolio management
In portfolio management, the P/S ratio can help financial advisors maintain a balanced mix of growth and value stocks. By monitoring the average P/S ratio of a portfolio, one can assess the overall valuation risk and make adjustments as needed.
Why evaluate the price-to-sales ratio?
The P/S ratio offers a simple way to assess how the market values a company’s sales. It can also help identify opportunities and risks. While this ratio has limitations, it is most effective when used in combination with other financial metrics and qualitative analysis.
The P/S ratio can also be a useful tool for managing risk. Stocks with extremely high ratios might be vulnerable to corrections if sales growth slows or market sentiment changes. Financial advisors should monitor P/S ratios as part of their risk management process.
As with any financial metric, context and judgment are critical. The P/S ratio is not a guarantee of success, but it is part of a financial advisor’s toolkit for evaluating stocks in the market.
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