One of the best investments we can make is in our own knowledge and skill set. With that in mind, this article will work through how we can use Return On Equity (ROE) to better understand a business. We'll use ROE to examine Nanjing Red Sun Co.,Ltd. (SZSE:000525), by way of a worked example.

Return on Equity or ROE is a test of how effectively a company is growing its value and managing investors' money. In other words, it is a profitability ratio which measures the rate of return on the capital provided by the company's shareholders.

Check out our latest analysis for Nanjing Red SunLtd

How Do You Calculate Return On Equity?

The formula for return on equity is:

Return on Equity = Net Profit (from continuing operations) ÷ Shareholders' Equity

So, based on the above formula, the ROE for Nanjing Red SunLtd is:

9.4% = CN¥134m ÷ CN¥1.4b (Based on the trailing twelve months to June 2023).

The 'return' refers to a company's earnings over the last year. So, this means that for every CN¥1 of its shareholder's investments, the company generates a profit of CN¥0.09.

Does Nanjing Red SunLtd Have A Good Return On Equity?

Arguably the easiest way to assess company's ROE is to compare it with the average in its industry. The limitation of this approach is that some companies are quite different from others, even within the same industry classification. As is clear from the image below, Nanjing Red SunLtd has a better ROE than the average (7.2%) in the Chemicals industry.

That is a good sign. However, bear in mind that a high ROE doesn't necessarily indicate efficient profit generation. A higher proportion of debt in a company's capital structure may also result in a high ROE, where the high debt levels could be a huge risk . To know the 2 risks we have identified for Nanjing Red SunLtd visit our risks dashboard for free.

The Importance Of Debt To Return On Equity

Most companies need money -- from somewhere -- to grow their profits. That cash can come from issuing shares, retained earnings, or debt. In the case of the first and second options, the ROE will reflect this use of cash, for growth. In the latter case, the debt required for growth will boost returns, but will not impact the shareholders' equity. Thus the use of debt can improve ROE, albeit along with extra risk in the case of stormy weather, metaphorically speaking.

Combining Nanjing Red SunLtd's Debt And Its 9.4% Return On Equity

We think Nanjing Red SunLtd uses a significant amount of debt to maximize its returns, as it has a significantly higher debt to equity ratio of 3.00. The combination of a rather low ROE and high debt to equity is a negative, in our book.

Conclusion

Return on equity is a useful indicator of the ability of a business to generate profits and return them to shareholders. Companies that can achieve high returns on equity without too much debt are generally of good quality. All else being equal, a higher ROE is better.

But when a business is high quality, the market often bids it up to a price that reflects this. Profit growth rates, versus the expectations reflected in the price of the stock, are a particularly important to consider. You can see how the company has grow in the past by looking at this FREE detailed graph of past earnings, revenue and cash flow.

If you would prefer check out another company -- one with potentially superior financials -- then do not miss this free list of interesting companies, that have HIGH return on equity and low debt.

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This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.