An activity cost driver is anything that causes a company’s variable costs to either reduce or grow. Since measuring an activity cost driver is a way to streamline the administration of managing production costs, it’s an integral part of activity-based costing.

Examples of activity-cost drivers are warehouse expenses, modifying engineering designs, and retooling, setup, and maintenance costs for machining needs. This can include higher warehouse expenses due to increased rents or leases, which add to the final amount of the product or service’s sales price. Machining costs include initial setups for initial production and ongoing maintenance costs for continued runs. If production needs to be re-engineered to different production parameters, those professional revision costs need to be added to the ultimate product or service cost calculations.

These cost drivers are used as a starting point to project the business’ operational and profitability goals through the use of activity-based costing (ABC), a type of managerial accounting.

ABC accounting is a way to determine the expenses of each output by looking at the inputs used during the company’s operations, be it power for the machinery, Information Technology (IT) needs, or labor.

It’s important to know that one variable expense can impact multiple single activity cost drivers. For example, wage costs and machining expenses can be identified as activity cost drivers in connection with production. The first step is looking at how ABC accounting can determine indirect costs.

Activity-Based Costing Illustration

A business wants to look at how its production space and its lease or real estate and property tax costs are attributable to individual widgets or services, based on the percentage dedicated to the respective product or service. If it’s not allocated properly, determining sales prices and profitability can be negatively impacted.

If a company has two product lines with the same retail prices and production quotas, with direct costs of $700 and $250, it’s important to see how the production area for each product impacts the company’s overall operations. If the first item uses 40 percent of the production area and the second item uses 60 percent of the production area, and the rent is $1,500, the rent needs to be factored in. The first item would see an additional cost of $600 plus the original $700, or a total of $1,300. The second item’s cost would be $900 for the rent and $250 for the item, or a total of $1,150. While the initial direct cost for the first item seems higher than the second item, when factoring in all costs, this time it’s still true – but that’s not always the case.

Once this has been established, and then a company receives a new order, the following illustrates how measuring an activity cost driver, such as performing maintenance on machines after a production run, will cost the company to have it ready for their next order. If it costs a company $200 for machine maintenance and it produces 1,000 widgets, a $0.20/widget cost would be factored into margins and retail pricing.

While this provides an overview of how activity cost drivers work, it is part of a comprehensive approach to how businesses measure their margins and ultimately profitability. 

Whether it’s an individual investor or a business owner looking to increase their earning power, understanding how accretion works is essential for individual and business investors to make the correct decisions going forward.

How Accretion Works for Bonds

Accretion is the gradual increase of a bond’s value over time. As a bond moves toward its maturity date, it increases in value until it reaches its face or par value – or what’s paid to the bondholder upon maturity.

If a bond has a face value of $2,000, yet it’s discounted at $1,900 when it’s offered for sale, the present value of the bond is $1,900, leaving the difference of $100 as the discount. Between the time of purchase and when it matures, the value of the bond will appreciate, up to its par value of $2,000. As the bond increases in value, this is referred to as an accretion discount. 

When it comes to accounting for bond accretion, there are two common methods.

Straight-Line Method

This approach documents the bond’s appreciated monetary gain and is laid out equally over the bond’s time frame until maturity. For a bond with a term of 10 years and a business that publishes its earnings once a quarter, there are 40 earnings releases.

If there’s a $100 discount, spread across 40 quarters, that is $2.50 every three months. The $2.50 is the quarterly accretion until the bond matures.

Constant Yield Method

This method is different from the straight-line method in that the bond’s value appreciation increases in value closer to the bond’s maturity date.

Acquisitions and Accretion

Companies can also benefit from accretion. Through the concept of synergy, where there’s more output from combining multiple entities than the sum of them if still separate, an acquiring company adds the earnings before interest, taxes, depreciation, and amortization (EBITDA), for example, to add to its existing shareholders’ value.

Illustrating How it Works

If Company X wants to increase its earnings per share for its shareholders, an acquisition is one way to do so. Assume Company X earned $1 million in net income the preceding year and has 3 million shares. And then there is Company Z, which had $500,000 in net income over the same time frame, with 1 million shares issued to raise cash. The following is a way to calculate the acquisition accretion value of the new combined company.

Earnings Per Share of Company X: 1,000,000 / 3,000,000 = 0.33

Earnings Per Share of the new company post-acquisition: ($1,000,000 + $500,000) / (3,000,000 + 1,000,000) = $1,500,000 / 4,000,000 = 0.375

Based on the calculation, the earnings per share of the post-acquisition company are $0.375. Compared to the EPS for the original, pre-acquisition Company X, the post-acquisition company is $0.045, resulting in a positive acquisition accretion.

Whether an individual investor is looking to see how bond accretion works or a company is looking at whether an acquisition makes business sense, understanding how accretion works is essential to ensure it’s accounted for properly.

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.