Smart Parking (ASX:SPZ) has had a great run on the share market with its stock up by a significant 12% over the last week. Given the company's impressive performance, we decided to study its financial indicators more closely as a company's financial health over the long-term usually dictates market outcomes. Particularly, we will be paying attention to Smart Parking's ROE today.

ROE or return on equity is a useful tool to assess how effectively a company can generate returns on the investment it received from its shareholders. Simply put, it is used to assess the profitability of a company in relation to its equity capital.

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How Is ROE Calculated?

ROE can be calculated by using the formula:

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

So, based on the above formula, the ROE for Smart Parking is:

16% = AU$5.3m ÷ AU$33m (Based on the trailing twelve months to December 2024).

The 'return' is the yearly profit. One way to conceptualize this is that for each A$1 of shareholders' capital it has, the company made A$0.16 in profit.

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What Has ROE Got To Do With Earnings Growth?

So far, we've learned that ROE is a measure of a company's profitability. We now need to evaluate how much profit the company reinvests or "retains" for future growth which then gives us an idea about the growth potential of the company. Assuming everything else remains unchanged, the higher the ROE and profit retention, the higher the growth rate of a company compared to companies that don't necessarily bear these characteristics.

A Side By Side comparison of Smart Parking's Earnings Growth And 16% ROE

To start with, Smart Parking's ROE looks acceptable. On comparing with the average industry ROE of 13% the company's ROE looks pretty remarkable. This certainly adds some context to Smart Parking's exceptional 55% net income growth seen over the past five years. We reckon that there could also be other factors at play here. For example, it is possible that the company's management has made some good strategic decisions, or that the company has a low payout ratio.

As a next step, we compared Smart Parking's net income growth with the industry, and pleasingly, we found that the growth seen by the company is higher than the average industry growth of 15%.

The basis for attaching value to a company is, to a great extent, tied to its earnings growth. The investor should try to establish if the expected growth or decline in earnings, whichever the case may be, is priced in. This then helps them determine if the stock is placed for a bright or bleak future. If you're wondering about Smart Parking's's valuation, check out this gauge of its price-to-earnings ratio, as compared to its industry.

Is Smart Parking Efficiently Re-investing Its Profits?

Smart Parking doesn't pay any regular dividends to its shareholders, meaning that the company has been reinvesting all of its profits into the business. This is likely what's driving the high earnings growth number discussed above.

Conclusion

In total, we are pretty happy with Smart Parking's performance. Particularly, we like that the company is reinvesting heavily into its business, and at a high rate of return. Unsurprisingly, this has led to an impressive earnings growth. With that said, the latest industry analyst forecasts reveal that the company's earnings growth is expected to slow down. To know more about the latest analysts predictions for the company, check out this visualization of analyst forecasts for the company.

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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.