When it comes to evaluating a business, there are many ways to perform a valuation. One way to do so is to use the Q Ratio. Known as Tobin’s Q Ratio or simply the Q Ratio, this method looks at the proportion between the values of a physical asset and its replacement cost. Developed by Nobel laureate economist James Tobin, this ratio presumes a single company; for public investors, if asset values can be estimated, the company’s market value of a publicly traded company may be approximately estimated.
The original formula is as follows:
Q Ratio = Market Value of Assets / Replacement Cost of Capital
While this formula is the original iteration, approximating an asset’s replacement value is complicated and oftentimes not 100 percent realistic to analyze. The more realistic way it’s calculated is by using book values in lieu of the asset’s replacement costs. The new way to calculate it is as follows:
Q Ratio = (Equity Market Value + Liabilities’ Market Value) / (Equity Book Value + Liabilities’ Market Value)
When it comes to calculating the overall market’s Q Ratio:
Q Ratio = Value of the Stock Market / Corporate Net Worth
Putting the Q Ratio in Practice
Essentially, it’s used to value a company. Once calculated, the Q Ratio provides internal stakeholders and outside investors with one way to evaluate a company.
Above 1
If the Q Ratio is more than 1, the business’ market value is higher than its booked assets. It means a company’s valuation is overestimated in the eyes of the market since there is some portion of the company’s assets that are either not documented or valued fully. When the Q Ratio is above 1, a business’ earnings are worth more than replacement costs for the assets. At this level, entrepreneurs are incentivized to develop a competitor business to gain market share and financial gain.
Equal to 1
When the Q Ratio equals 1, it implies the market sees the company’s assets as valued fairly.
Below 1
At this level, a business’ assets are worth more than fair market value, establishing the business as undervalued. Investors with enough assets can purchase the company in question, either via shares if publicly traded or outright if a private company, versus trying to create a competitor company to siphon value away from it.
Further Consideration
When it comes to the calculated Q Ratio, it’s important to keep it in context. While accountants can be precise with many things during preparation, when it comes to market forces and intangible assets, analysts need to use their judgment. Investors and market forces can create hyperbole for a business’ value that can’t be quantified and recorded by accountants. Stock analysts’ perspectives on a business’ prospects or rumors regarding future performance can modulate the present, dynamic valuation of the company.
Another consideration is how to document and gauge intangible assets like intellectual property and goodwill. While accountants can approximate IP or goodwill, it’s not an exact science.
Thus, when businesses use the Q Ratio to value their own company or one they consider purchasing, investors must take the Q Ratio as part of a holistic valuation approach.
Disclaimer 
