While some investors are already well versed in financial metrics (hat tip), this article is for those who would like to learn about Return On Equity (ROE) and why it is important. To keep the lesson grounded in practicality, we’ll use ROE to better understand East Japan Railway Company (TSE:9020).
Return on equity or ROE is a key measure used to assess how efficiently a company’s management is utilizing the company’s capital. In short, ROE shows the profit each dollar generates with respect to its shareholder investments.
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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 East Japan Railway is:
7.9% = JP¥229b ÷ JP¥2.9t (Based on the trailing twelve months to December 2024).
The ‘return’ is the profit over the last twelve months. That means that for every ¥1 worth of shareholders’ equity, the company generated ¥0.08 in profit.
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Does East Japan Railway Have A Good Return On Equity?
By comparing a company’s ROE with its industry average, we can get a quick measure of how good it is. Importantly, this is far from a perfect measure, because companies differ significantly within the same industry classification. If you look at the image below, you can see East Japan Railway has a similar ROE to the average in the Transportation industry classification (7.9%).
TSE:9020 Return on Equity April 18th 2025
That’s neither particularly good, nor bad. Although the ROE is similar to the industry, we should still perform further checks to see if the company’s ROE is being boosted by high debt levels. If a company takes on too much debt, it is at higher risk of defaulting on interest payments.
How Does Debt Impact ROE?
Companies usually need to invest money to grow their profits. That cash can come from retained earnings, issuing new shares (equity), 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 used for growth will improve returns, but won’t affect the total equity. In this manner the use of debt will boost ROE, even though the core economics of the business stay the same.
Combining East Japan Railway’s Debt And Its 7.9% Return On Equity
East Japan Railway clearly uses a high amount of debt to boost returns, as it has a debt to equity ratio of 1.62. With a fairly low ROE, and significant use of debt, it’s hard to get excited about this business at the moment. Debt does bring extra risk, so it’s only really worthwhile when a company generates some decent returns from it.
Summary
Return on equity is useful for comparing the quality of different businesses. Companies that can achieve high returns on equity without too much debt are generally of good quality. If two companies have around the same level of debt to equity, and one has a higher ROE, I’d generally prefer the one with higher ROE.
Having said that, while ROE is a useful indicator of business quality, you’ll have to look at a whole range of factors to determine the right price to buy a stock. It is important to consider other factors, such as future profit growth — and how much investment is required going forward. So I think it may be worth checking this free report on analyst forecasts for the company.
Of course East Japan Railway may not be the best stock to buy. So you may wish to see this free collection of other companies that have high ROE 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.