# What is Mid-month Convention in Depreciation?

Depreciation is an important accounting concept that helps businesses allocate the cost of their assets over their useful lives. There are different methods that businesses can use to calculate depreciation, including the mid-month convention. In this blog post, we will explain what the mid-month convention is and how it works.

The mid-month convention is a method of depreciation that assumes that an asset is placed in service on the 15th day of the month, regardless of when it was actually purchased or put to use. This means that even if the asset was purchased or put to use in the last few days of the month, it is assumed to have been used for half a month in that month for depreciation purposes.

The mid-month convention is a more precise method of depreciation than the half-year convention, as it takes into account the actual number of days the asset was in use in the first and last months of its useful life. This can be especially important for assets that are only used for part of a month, such as rental property.

To calculate depreciation using the mid-month convention, you first need to determine the cost of the asset and its useful life. Then, you divide the cost by the useful life to get the annual depreciation expense. For example, if an asset costs \$50,000 and has a useful life of 5 years, the annual depreciation expense would be \$10,000 (\$50,000/5).

Using the mid-month convention, the depreciation expense for the first year would be calculated as follows. First, you determine the number of months the asset was in use in the first year. For example, if the asset was placed in service on January 20th, it was in use for 11/12 of a month in the first year. Then, you multiply the annual depreciation expense by the fraction of the year the asset was in use in the first year. In this case, the depreciation expense for the first year would be \$9,167 ((\$50,000/5) x 11/12).

For each subsequent year, the depreciation expense would be the same as the annual depreciation expense, or \$10,000.

Let’s look at an example to illustrate how the mid-month convention works in practice. XYZ Company purchased a rental property for \$100,000 on June 20th, 2022. The property has a useful life of 27.5 years. Using the mid-month convention, the depreciation expense for the first year (2022) would be \$1,212 ((\$100,000/27.5) x 5/12), and for each subsequent year it would be \$3,636 (\$100,000/27.5).

In conclusion, the mid-month convention is a more precise method of depreciation than the half-year convention, as it takes into account the actual number of days the asset was in use in the first and last months of its useful life. It is a useful method for assets that are only used for part of a month, such as rental property. By understanding how the mid-month convention works, businesses can ensure that their financial statements accurately reflect the value of their assets over time.

For more details about Half-year and Mid-month Conventions, visit these articles: Half-year Convention, Difference Between Half-year and Mid-month Conventions.

Caroline Grimm

Caroline Grimm is an accounting educator and a small business enthusiast. She holds Masters and Bachelor degrees in Business Administration. She is the author of 13 books and the creator of Accounting How To YouTube channel and blog. For more information visit: https://accountinghowto.com/about/