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What Are The Limitations of Ratio Analysis?

Started by Monirul Islam, June 07, 2018, 10:51:50 AM

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Monirul Islam

Financial ratio analysis is one of the most popular financial analysis techniques for companies and particularly small companies. Ratio analysis provides business owners with information on trends within their own company, often called trend or time-series analysis, and trends within their industry, called industry or cross-sectional analysis.

Financial ratio analysis is useless without comparisons. In doing industry analysis, most business use benchmark companies. Benchmark companies are those considered most accurate and most important and are those used for comparison regarding industry average ratios. Companies even benchmark different divisions of their company against the same division of other benchmark companies.

There are other financial analysis techniques to determine the financial health of their company besides ratio analysis, with one example being common size financial statement analysis. These techniques fill in the gaps left by the limitations of ratio analysis discussed below.

01  Benchmark to Industry Leaders' Ratios, Not Industry Averages
Business people reviewing data in meeting
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This may be contrary to everything you have ever learned. But, think about it. Do you want high performance for your company? Or do you want average performance? I think all business owners know the answer to that one. We all want high performance. So benchmark your firm's financial ratios to those of high performing firms in your industry, and you will shoot for a higher goal.

As for a limitation of ratio analysis, the only limitation is if you use average ratios instead of the ratios of high-performance firms in your industry.

Two sources of industry average data, as well as financial statement data you can use for free, are BizStats and BizMiner. Use these to better work your ratio analysis.


02  Companies' Balance Sheets Are Distorted By Inflation
Coins against graph paper with a line rising behind them
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Ever wonder why you always hear that balance sheets only show historical data? This is why. A balance sheet is a statement of a firm's financial condition at a point in time. So, looking back on a balance sheet, you see historical data. Inflation may have occurred since that data was gathered and the figures may be distorted.

Reported values on balance sheets are often different from "real" values. Inflation affects inventory values and depreciation; profits are affected. If you try to compare balance sheet information from two different time periods and inflation has played a role, then there may be distortion in your ratios.


03  Ratio Analysis Just Gives You Numbers, Not Causation Factors.
Computer printout behind artistically displayed numbers
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You can calculate all the ratios you can find from now until doomsday. Unless you try to find the cause of the numbers you come up with, you are playing a useless game. Ratios are meaningless without comparison against trend data or industry data. Ratios are also meaningless unless you take the limitations listed in this article into account.


04  Different Divisions May Need Comparison to Different Industry Averages
Businessman Working in Office
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Very large companies may be composed of different divisions manufacturing different products or offering different services. To make ratio analysis mean something, different industry averages need to be used for each different division. The ratio analysis, used in this way, will certainly be more accurate than if you tried to do a ratio analysis for this type of large company.

05  Companies Choose Different Accounting Practices
Neon signs on a concrete backing arranged in ascending order
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Different companies may use different methods to value their inventory. If companies are compared that use different inventory valuation methods, the comparisons won't be accurate. Another issue is depreciation. Different companies use different depreciation methods. The use of different depreciation methods affects companies' financial statements differently and won't lead to valid comparisons.

06  Companies Can Use Window Dressing to Manipulate Their Financial Statements
Calculator, pen and credit cards on bank statements
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Ratio analysis is based entirely on the data found in business firms' financial statements. If the financial statements for a company are not quite as good as they should be and a company would like better numbers to show up in an annual report, the company may use window dressing to manipulate the data in the financial statements. Bear in mind — this is completely against the concept of financial and business ethics and flies in the face of corporate governance.

What exactly is window dressing? The company will perform some sort of transaction at the end of its fiscal year that will impact its financial statements and make them look better but is then taken care of as soon as the new fiscal year starts. That is the simplest form of window dressing.

You can see that if ratio analysis is used with knowledge and intelligence and not mechanically and unthinkingly (like just cranking out the numbers), it can be a very valuable tool for financial analysis for the business owner. Its limitations have to be kept in mind, but they should be more or less intuitive to a savvy business owner.

Source: https://www.thebalancesmb.com/limitations-of-financial-ratio-analysis-393236