What Is Accumulated Depreciation, and How Does it Impact Your Assets’ Value?

As a business owner, you can look to your balance sheet for answers to questions about your business’s financial health. One thing you may keep track of on your balance sheet is accumulated depreciation. But, what is accumulated depreciation?

What is accumulated depreciation?

Accumulated depreciation is the accruing depreciation of an asset. It is the total amount a business’s assets depreciate over time. Basically, accumulated depreciation is the amount that has been allocated to depreciation expense.

For every asset you have in use, there is an initial cost (aka original basis) and value loss over time (aka accumulated depreciation).

Accumulated depreciation is a contra asset account on the balance sheet. This means it’s an asset account that offsets the balance in the asset account it is normally associated with. In short, its balance is a credit that reduces the overall asset value. Unlike a typical asset account, a credit to a contra asset account increases its value and a debit decreases it.

The accumulated depreciation for an asset or group of assets increases over time as depreciation expenses are credited against the assets.

The following assets typically have (or will have) accumulated depreciation:

Buildings Machinery Office equipment (e.g., computers) Furniture Fixtures Vehicles How to calculate accumulated depreciation

There is no standard accumulated depreciation formula. However, there are a couple of ways to calculate accumulated depreciation. Here are the two main methods you can use:

Straight-line Double-declining balance

Straight-line method

The straight-line method is the easiest way to calculate accumulated depreciation. With the straight-line method, you depreciate assets at an equal amount over each year for the rest of its useful life.

To calculate accumulated depreciation with the straight-line method, use the steps below:

Subtract the asset’s salvage value (the book value of an asset after all depreciation has been fully expensed) from its purchase price to determine the amount that can be depreciated Divide the amount from Step 1 by the number of years in the asset’s useful life to get annual depreciation

Annual Depreciation = (Purchase Price – Salvage Value) / Years in Useful Life

Let’s take a look at the straight-line method in action, shall we? Say your business purchases a new machine for $30,000. It has a salvage value of $5,000 and a useful life of 10 years.

$2,500 = ($30,000 – $5,000) / 10 years

Your annual depreciation is $2,500, meaning your asset depreciates $2,500 each year.

If you want to calculate monthly depreciation, simply divide your annual total by 12. For example:

Monthly Depreciation = $2,500 / 12

Your monthly depreciation for the machine would be ~$209.33.

Double-declining balance method

The double-declining balance method accounts for the majority of an asset’s depreciation occurring earlier in its lifespan. With this method, the asset depreciates more quickly in its earlier years, so it uses a depreciation rate of 2.

Check out the double-declining balance formula below:

(Purchase Price – Salvage Value) X ( 1 / Years in Useful Life) X 2

Say you purchase a company vehicle for $50,000. The salvage value is $10,000, and its useful life is 10 years.

(Purchase Price – Salvage Value) X ( 1 / Years in Useful Life) X 2

($50,000 – $10,000) X (1 / 10) X 2

For Year 1, your annual depreciation expense would be $8,000.

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