HomeInvestmentsModified Accelerated Cost Recovery System (MACRS)

Modified Accelerated Cost Recovery System (MACRS)

Last updated 29th Nov 2022


The finance term Modified Accelerated Cost Recovery System, or MACRS, refers to the tax depreciation structure created as a result of the Tax Reform Act of 1986. MACRS is an accelerated approach to the depreciation of an asset, and is based on both the declining balance and straight line methods.


The Modified Accelerated Cost Recovery System was first introduced in 1986, and replaced the even more business-friendly ACRS. Under the MACRS, the tax deductions for capital assets, or depreciation expense, occurs at a faster rate than book depreciation of the asset. In doing so, this system provides an incentive for businesses to purchase capital assets.

The exact method of tax depreciation is based on tables published by the IRS. In practice, there are a series of tables that include first-quarter, mid-quarter, third-quarter, and half-year conventions. The exact table to use will depend on the in-service date of the capital equipment.

The time over which depreciation occurs is based on classes of property, as demonstrated in the table below:

ClassExamples3-Year PropertySpecial equipment used in the manufacture of food, beverages, plastics, metal products and motor vehicles.5-Year PropertyComputer systems, aircraft, drilling equipment, solar, wind and energy property.7-Year PropertyOffice furniture, fixtures, and equipment.10-Year PropertyPetroleum refining equipment, ships and other transportation vessels.15-Year PropertyUtility plant such as telephone distribution and municipal sewage treatment facilities.20-Year PropertyMunicipal sewer systems.27.5-Year PropertyResidential rental property.39-Year PropertyNon-residential real property.

Once the asset's property class has been identified, a second table is used which contains the MACRS depreciation schedule as shown below:

Property Class3-Year5-Year7-Year10-Year15-Year20-Year39-Year133.333%20.000%14.290%10.000%5.000%3.750%2.564%233.333%32.000%24.490%18.000%9.500%7.219%2.564%333.334%19.200%17.490%14.400%8.550%6.677%2.564%4 11.520%12.490%11.520%7.700%6.177%2.564%5 11.520%8.930%9.220%6.930%5.713%2.564%6 5.760%8.920%7.370%6.230%5.285%2.564%7 8.930%6.550%5.900%4.888%2.564%8 4.460%6.550%5.900%4.522%2.564%9 6.560%5.910%4.462%2.564%10 6.550%5.900%4.461%2.564%11 3.280%5.910%4.462%2.564%12 5.900%4.461%2.564%13 5.910%4.462%2.564%14 5.900%4.461%2.564%15 5.910%4.462%2.564%16 2.950%4.461%2.564%17 4.462%2.564%18 4.461%2.564%19 4.462%2.564%20 4.461%2.564%21 2.231%2.564%22 2.564%23 2.564%24 2.564%25 2.564%26 2.564%27 2.564%28 2.564%29 2.564%30 2.564%31 2.564%32 2.564%33 2.564%34 2.564%35 2.564%36 2.564%37 2.564%38 2.564%39 2.564%


Company A purchased a new computer system to automate the tracking of its inventory. The computer system cost $100,000, and based on the MACRS tables, the new asset would be considered 5-year property. As such, the tax depreciation schedule for the new computer system is shown below.

5-YearTax DepreciationAccumulated Depreciation20.00%$100,000$100,00032.00%$160,000$260,00019.20%$96,000$356,00011.52%$57,600$413,60011.52%$57,600$471,2005.76%$28,800$500,000

Related Terms

asset, depreciation expense, accumulated depreciation, declining balance method, straight line method

Moneyzine Editor

Moneyzine Editor