Strong earnings weren't enough to please Allwinnertech Technology Co.,Ltd.'s (SZSE:300458) shareholders over the last week. We did some analysis and believe that they might be concerned about some weak underlying factors.

The Impact Of Unusual Items On Profit

Importantly, our data indicates that Allwinnertech TechnologyLtd's profit received a boost of CN¥60m in unusual items, over the last year. While we like to see profit increases, we tend to be a little more cautious when unusual items have made a big contribution. When we crunched the numbers on thousands of publicly listed companies, we found that a boost from unusual items in a given year is often not repeated the next year. And, after all, that's exactly what the accounting terminology implies. We can see that Allwinnertech TechnologyLtd's positive unusual items were quite significant relative to its profit in the year to September 2024. As a result, we can surmise that the unusual items are making its statutory profit significantly stronger than it would otherwise be.

That might leave you wondering what analysts are forecasting in terms of future profitability. Luckily, you can click here to see an interactive graph depicting future profitability, based on their estimates.

An Unusual Tax Situation

Having already discussed the impact of the unusual items, we should also note that Allwinnertech TechnologyLtd received a tax benefit of CN¥6.5m. It's always a bit noteworthy when a company is paid by the tax man, rather than paying the tax man. The receipt of a tax benefit is obviously a good thing, on its own. And given that it lost money last year, it seems possible that the benefit is evidence that it now expects to find value in its past tax losses. However, the devil in the detail is that these kind of benefits only impact in the year they are booked, and are often one-off in nature. Assuming the tax benefit is not repeated every year, we could see its profitability drop noticeably, all else being equal.

Our Take On Allwinnertech TechnologyLtd's Profit Performance

In the last year Allwinnertech TechnologyLtd received a tax benefit, which boosted its profit in a way that might not be much more sustainable than turning prime farmland into gas fields. Furthermore, it also benefitted from a positive unusual item, which boosted the profit result even higher. Considering all this we'd argue Allwinnertech TechnologyLtd's profits probably give an overly generous impression of its sustainable level of profitability. Keep in mind, when it comes to analysing a stock it's worth noting the risks involved. For example, Allwinnertech TechnologyLtd has 2 warning signs (and 1 which is potentially serious) we think you should know about.

In this article we've looked at a number of factors that can impair the utility of profit numbers, and we've come away cautious. But there are plenty of other ways to inform your opinion of a company. Some people consider a high return on equity to be a good sign of a quality business. While it might take a little research on your behalf, you may find this free collection of companies boasting high return on equity, or this list of stocks with significant insider holdings to be useful.

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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.