Skip to content
SuperMoney logo
SuperMoney logo

A Guide to Depreciation and How It’s Calculated

Last updated 03/28/2024 by

Allan Du

Edited by

Fact checked by

Summary:
Depreciation is an important accounting concept that enables companies to spread out the cost of physical assets over their useful lives. By doing so, companies can earn revenue from the assets they own by paying for them over time rather than in a single lump sum. The benefits of depreciation include immediate expense reduction and tax savings. Accountants handle depreciation at the end of each period by booking depreciation for assets that have not been fully depreciated. The Internal Revenue Service has specific rules when it comes to depreciating assets, and depreciation rates are calculated as the total amount depreciated each year, expressed as a percentage of the asset’s value.

Compare Business Loans

Compare rates, terms, and community reviews between multiple lenders.
Compare Business Loans

What is depreciation, and why does it matter for businesses?

Depreciation is a crucial accounting concept that allows businesses to manage their finances effectively. It enables companies to spread the cost of owning physical assets over their useful life, which can help to reduce immediate expenses and improve profit margins.
Without accounting for depreciation, a company’s financial statements may not accurately reflect the true cost of owning and operating physical assets. Depreciation allows for a more accurate representation of the asset’s cost and value over time, which is important for financial planning and decision-making.
Furthermore, depreciation has both tax and accounting benefits. Companies can claim deductions on their tax returns based on the depreciation of long-term assets, which can lead to significant savings. Additionally, accurate accounting for depreciation can help companies avoid legal and financial consequences, such as overestimating profits or underestimating expenses.
Amortization is similar to depreciation, but instead of physical assets, it’s used to track changes in the value of intangible assets over time. Intangible assets, such as patents, copyrights, and trademarks, can also generate revenue over time, and amortization allows for the cost of these assets to be spread out over their useful life.
By understanding both depreciation and amortization, businesses can make informed decisions about their investments and avoid potential financial pitfalls. Accurate accounting for these concepts is crucial for financial planning, tax compliance, and overall business success.

An overview of depreciation and its impacts

Depreciation can help companies spread out the cost of machinery and equipment, allowing for the matching of expenses with related revenues in the same period. This means you can write off the value of your asset over its useful life instead of all at once in the first year. By taking depreciation regularly, you can move the asset’s cost from your balance sheet to your income statement, avoiding a big hit to profits in any given year.
At the end of each period, accountants go through a process of booking depreciation for all the assets that have not been fully depreciated. This involves creating a journal entry that has two parts:
  • Firstly, there is a debit made to the depreciation expense account, which ultimately shows up on the income statement. This debit represents the amount of depreciation that has been incurred during the period.
  • Secondly, there is a credit made to the accumulated depreciation account, which appears on the balance sheet. This credit reflects the total amount of depreciation that has been charged to the assets over their useful life.
It’s important to note that the Internal Revenue Service (IRS) has specific rules when it comes to depreciating assets. One of the key rules is that companies must spread the cost of the asset out over time. This means that they cannot simply take the entire cost of the asset as a deduction in the year of purchase. Instead, they must spread the deduction out over the useful life of the asset.
The IRS also has rules about when companies can take a deduction for depreciation. For example, they may require that a company put an asset into service before it can take a depreciation deduction.

What to consider when accounting for depreciation

Depreciation is a critical concept in accounting that helps businesses spread the cost of a physical asset over its useful life. It enables companies to earn revenue from the assets they own by paying for them over time rather than in one large lump sum.
As a non-cash charge, depreciation doesn’t represent an actual cash outflow. Instead, the expense is recorded incrementally over time for financial reporting purposes. This is because assets provide a benefit to the company over an extended period.
But why is it essential to record depreciation charges if they don’t represent a cash outflow? One reason is that they can reduce a company’s earnings, which is beneficial for tax purposes. Under GAAP, expenses must be matched to the period in which the related revenue is generated. This is known as the matching principle, which is an accrual accounting concept.
Depreciation helps tie the cost of an asset with the benefit of its use over time. The depreciation rate represents the total amount depreciated each year, expressed as a percentage of the asset’s value. For example, suppose a company has an asset with a total expected depreciation of $100,000 over its useful life, and the annual depreciation is $15,000. In that case, the depreciation rate for the asset would be 15% per year.
It’s worth noting that buildings and structures can be depreciated like any other asset. However, land is not eligible for depreciation. This is because land is considered to have an infinite useful life, and its value is not expected to decline over time.
Overall, depreciation is a crucial accounting concept that helps companies accurately report the value of their assets and earnings over time. By understanding depreciation, businesses can make informed decisions about their investments and avoid potential financial pitfalls.

Accumulated depreciation

Accumulated depreciation is an essential aspect of financial accounting that allows businesses to track the wear and tear of their assets over time. It is a contra-asset account that is credited to reflect the total depreciation charged against an asset since its acquisition. Accumulated depreciation is reported in a company’s financial statements and represents the decrease in the overall value of an asset.
The carrying value of an asset is the difference between the asset account and the accumulated depreciation. It is the net value of the asset, and it decreases over time as depreciation expenses are recorded. The carrying value reflects the value of the asset that remains after accounting for the depreciation charges.
Salvage value is the estimated value that a company expects to receive in exchange for the asset at the end of its useful life. This value is used to calculate the total amount of depreciation that should be charged against the asset over its useful life. For example, if an asset has a salvage value of $5,000 and a useful life of ten years, the total depreciation charged against the asset over ten years will be the original cost of the asset minus the $5,000 salvage value.
The IRS publishes depreciation schedules that provide guidelines on how long an asset can be depreciated for tax purposes. These schedules are based on different asset classes and specify the number of years over which an asset can be depreciated. Depreciation schedules help businesses to calculate the tax-deductible depreciation expense for their assets.

Depreciation expense vs. accumulated depreciation

Depreciation expense and accumulated depreciation are two important terms related to accounting and the management of assets. Depreciation expense appears on the income statement as an expense, while accumulated depreciation is a contra-asset reported on the balance sheet.
Both of these terms are used to account for the decrease in value of an asset over time, which is important for making accurate year-end tax deductions and asset valuations when a company is sold. By properly accounting for depreciation, a company can accurately reflect the true value of its assets on its financial statements.
While both depreciation expense and accumulated depreciation are typically included in year-end and quarterly reports, depreciation expense is more commonly discussed because of its impact on tax deductions and reducing a company’s tax liability. On the other hand, accumulated depreciation is used to estimate an asset’s remaining useful life or track its depreciation over time. Understanding these concepts is crucial for businesses to accurately report their financial performance.

What are the methods of depreciation?

Accountants have several methods for depreciating capital assets and other revenue-generating assets. These methods vary in complexity and are designed to match the expected pattern of benefits provided by the asset over its useful life.
The most common methods of depreciation are straight-line, declining balance, double-declining balance, sum-of-the-years’ digits, and unit of production. Here’s a brief rundown of each method:

Straight-line

The straight-line method is one of the simplest ways to calculate depreciation. Under this method, the depreciation expense remains constant throughout the useful life of an asset, resulting in equal annual depreciation charges.
To calculate annual depreciation using the straight-line method, divide the depreciable amount by the total number of years. For example, suppose a company purchases equipment for $5,000 with a salvage value of $1,000 and a useful life of five years. The asset’s depreciable amount would be $4,000 ($5,000 cost – $1,000 salvage value). Using the straight-line method, the company would allocate $800 of depreciation expense ($4,000 depreciable amount ÷ 5 years of useful life) each year until the equipment’s value is reduced to its salvage value.

Declining balance

The declining balance method is a popular method for accelerated depreciation. This method applies a fixed rate of depreciation to the remaining book value of the asset each year, resulting in larger depreciation expenses in the earlier years of the asset’s life.
Using this method, the asset is depreciated by multiplying its remaining depreciable value with the straight-line depreciation percentage. Since an asset’s carrying value is higher in the earlier years, the percentage results in a larger depreciation expense in those years, with the amount declining each year. This method allows companies to expense the asset more quickly, providing greater tax benefits in the earlier years.
Declining Balance Depreciation = (Net Book Value – Salvage Value) x (1 / Useful Life) x Depreciation Rate
Following the previous example, the asset is depreciated at a straight-line rate of 20% per year, or an equal depreciation expense of $800 per year. As the years go by, the depreciation expense decreases because the asset’s carrying value reduces. In the second year, the depreciation expense would be 20% of the remaining depreciable amount of $3,200 ($4,000 depreciable amount minus $800 depreciation expense in year one), resulting in a depreciation expense of $640, and so on until the asset is fully depreciated.

Double-declining balance (DDB)

The double-declining balance (DDB) method is a depreciation technique that allows for even faster depreciation than the declining balance method. To use this method, take the reciprocal of the asset’s useful life, double it, and apply that percentage to the asset’s depreciable base (the asset’s book value minus its salvage value). This results in a higher rate of depreciation in the earlier years of an asset’s life, with the depreciation rate declining over time until the asset is fully depreciated.
DDB = (Net Book Value – Salvage Value) x (2 / Useful Life) x Depreciation Rate
For example, an asset with a useful life of five years would have a reciprocal value of 1/5, or 20%. Double that rate (40%) is applied to the asset’s current book value for depreciation. Although the rate remains constant, the dollar value will decrease over time because the rate is multiplied by a smaller depreciable base for each period.

Sum-of-the-years’ digits (SYD)

The sum-of-the-years’ digits method applies a declining percentage to the asset’s depreciable base, with the percentage determined by adding up the digits of the asset’s useful life.
For instance, if your asset has a five-year life, the sum of the digits would be the sum of the numbers one through five: 1 + 2 + 3 + 4 + 5 = 15. In the first year of depreciation, 5/15 of the depreciable base would be depreciated, the next year would be 4/15, and so on until year five depreciates the remaining 1/15 of the base.
By using the SYD method, you can expect a larger deduction in the first few years of the asset’s life, which can be beneficial for tax purposes. This method can be used with both the declining balance and double-declining balance formulas.

Units of production

The units of production method applies a fixed rate of depreciation to the asset based on the amount of output it produces, with the total depreciation expense varying based on the level of production each year. In other words, instead of estimating how many years an asset will last, this method uses an estimate of how many units it will produce over its lifetime.
Once you have that value figured out, you can calculate the depreciation expense per unit and adjust it each year as production levels change. This means that you’ll be able to account for wear and tear on your assets in a more accurate way that reflects actual usage. You’ll also still be able to calculate depreciation expenses based on the depreciable amount, giving you a complete picture of your asset’s value over time.

Example of depreciation

Let’s say a company buys a $50,000 piece of equipment that has a ten-year useful life. They could choose to expense the entire cost in the first year, but most owners prefer to spread it out over time. This is where depreciation comes in.
To calculate depreciation, the accountant takes into account the initial cost of the equipment and the estimated salvage value at the end of its useful life. In this case, the equipment is expected to be worth $10,000 when it’s scrapped. The accountant then divides the difference between the cost and the salvage value by the useful life to arrive at an annual depreciation expense.
Using our first example, that calculation would look like this:
($50,000 – $10,000) / 10 = $4,000 per year
By deducting $4,000 from their income each year, the company can reduce their taxable income and boost their net income. The accountant doesn’t need to expense the entire $50,000 cost in year one, and the company is only required to expense $4,000 against net income per year until the asset eventually reaches its salvage value of $10,000 in ten years.
By using this method, the company can lower its taxable income each year and potentially save money on taxes. Furthermore, spreading out the cost of the asset over its useful life is a more accurate way to match expenses with revenue, which helps to present a more accurate picture of the company’s financial performance.

FAQ about depreciation

Why do assets depreciate over time?

Newer assets are usually considered more valuable than older ones. Measuring the depreciation of an asset gauges the value an asset loses over time due to various factors, including wear and tear from usage and the introduction of new and improved product models. Actors like inflation can also cause assets to lose value over time.

How are assets depreciated for accounting and tax purposes?

Depreciation is an essential concept in accounting that helps companies accurately represent the wear and tear of their assets over time. The goal is to match the costs of the asset with the revenue it generates so that the financial statements accurately reflect the profitability of the business.
When creating depreciation schedules, businesses often take into account tax benefits as well. Depreciation on assets can be deducted as a business expense according to IRS rules, which can help lower a company’s tax liability.
Depreciation schedules can take on various forms, ranging from simple straight-line methods to accelerated or per-unit measures. Each approach has its own advantages and disadvantages, and businesses may choose one over another depending on their particular needs and circumstances.

What is the difference between depreciation and amortization?

Depreciation and amortization are two accounting terms that are often used interchangeably, but they refer to different types of assets. Depreciation is the process of allocating the cost of physical assets over their useful lives, while amortization is the process of allocating the cost of intangible assets over their useful lives. Intangible assets include patents, trademarks, copyrights, and goodwill, which can have value despite not being physical assets.

Can depreciation be considered a business expense?

Depreciation is like the aging process for assets. Similar to how organic lifeforms deteriorate over time, machines and other assets also lose value as they are used. Depreciation is a way of accounting for this decline in value and is considered an expense because it represents the cost of doing business. This expense is recorded on the income statement and helps to accurately reflect the true cost of operating a business.

Key takeaways

  • Depreciation represents the link between an asset’s cost and its usefulness over time.
  • Methods of depreciation include straight-line, accelerated, and units of production.
  • Accumulated depreciation is the sum of all recorded depreciation up to a certain date, while an asset’s carrying value is its historical cost minus all accumulated depreciation.
  • An asset’s carrying value after all depreciation is its salvage value.

SuperMoney may receive compensation from some or all of the companies featured, and the order of results are influenced by advertising bids, with exception for mortgage and home lending related products. Learn more

Loading results ...

Allan Du

Allan Du is a personal finance writer passionate about helping people take control of their finances. Allan strives to present readers with the right knowledge and tools, so they can make informed decisions about their money and build wealth. When he is not writing about finance, Allan enjoys pursuing his other interests, including powerlifting, kickboxing, and investing. He is an active follower of economic and political trends, always keeping watch on the latest developments that could impact the financial world.

Share this post:

You might also like