# Units of Production Depreciation Method

Apr 17, 2021 • 4 min read

There are several methods to calculating depreciation, and business owners often want to find what works best for them—accuracy, convenience, tax-friendly. While the straight-line method might be easy, it doesn’t take into consideration how cared-for an asset is and how much work it performs. An item that is used constantly and rarely cared for won’t last as long (and will have a lower value) than a well-cared-for item or rarely-used asset.

The units of production depreciation method works to address this principle by tracking how much an item is used and using that to determine its value. Get to know this depreciation method better to see if it is right for you.

## What Is the Units of Production Depreciation Method?

With the units of production depreciation method, an asset’s value is based on how much it is used—or the number of units it has produced. This method is often used for manufacturing equipment that wears down over time as it produces more products.

This depreciation method is popular in production-oriented industries because it can fluctuate based on machine demand for that year. For example, if a company works overtime to fill orders 1 year but then has downtime during another year, the depreciation amount is different because the assets were used less and therefore retained more of its useful life—value.

## How to Calculate the Units of Production Depreciation Method

The units of production depreciation method is fairly straightforward to calculate. However, you will need to change the calculation annually based on the units an asset produced. You will also have to track how many units an asset produced to make sure your calculation is accurate.

Start by calculating the Units of Production Rate (UPR):

• UPR = (Cost of the Asset – Salvage Value)/ Total Units that Will Be Produced Over Its Life

Naturally, this calculation is an estimate. You can’t predict how long an asset will last (especially machinery) and the number of units it will produce—but you can make an educated guess based on the IRS value expectancy and the production rate of similar assets.

Once you have the UPR, multiply it by the number of actual units produced for that current year.

Let’s use the example of a baker who makes doughnuts with a specialized machine. This is what the formula might look like.

• (Machine Cost – Salvage Value)/Estimated Doughnuts Made Over Its Life x Doughnuts Made This Year
• (\$25,000 – \$500)/100,000 x 10,000
• \$24,500/100,000 x 10,000
• 0.245 x 10,000
• \$2,450

The depreciation for that year is \$2,450. Now, if the baker makes more doughnuts the next year, the depreciation will be higher because there is more wear on the machine. Let’s say the baker made 15,000 doughnuts the following year. In this case, the depreciation would be:

• 0.245 x 15,000
• \$3,675

Once you have the base formula for calculating units of production depreciation, you can estimate how much you lost in assets each year with relative ease.

## Pros and Cons of this Method

The main drawback of the units of production method is that you can’t use it to calculate your tax deductions for the year. This means it can’t be your only depreciation method of choice. Some companies use the units of production method for their internal accounting (or to report to shareholders) and then opt for a different method for their taxes.

The units of production method also can’t be used for every piece of equipment. Not all assets can be tracked by what they produce. (You wouldn’t base the value of a computer on the number of emails it has sent or the total PowerPoint presentations it has created.) This means you could end up using multiple depreciation formulas for various assets internally, as well.

Finally, the units of production method isn’t predictable. You can’t easily estimate how your assets will change until you close your books and look at the number of units you produced. Your depreciation rates could fluctuate over time.

While all of these cons are significant, many manufacturers still prefer this method of accounting for depreciation because the value of an asset is directly tied to production. Teams can track an asset’s value over time to get a clearer idea of how long it should remain functional. This allows them to budget for replacements if an item is wearing out or schedule maintenance after a certain number of units is produced.

As you set up your accounts for your small business, consider the various options at your disposal for calculating depreciation. Using the units of production method might be ideal if you work in manufacturing, but it likely isn’t the only model you should use.

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###### Derek Miller

Derek Miller is the CMO of Smack Apparel, the content guru at Great.com, the co-founder of Lofty Llama, and a marketing consultant for small businesses. He specializes in entrepreneurship, small business, and digital marketing, and his work has been featured in sites like Entrepreneur, GoDaddy, Score.org, and StartupCamp.

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