MACRS Straight Line Election
The business can elect to use straight-line depreciation instead of the accelerated method in Table 1. The
time periods stay the same as for MACRS, and the half-year convention is still in use. A business may
choose this method if they believe they will have much higher profits in the next few years, so they want
to preserve write offs for those years. So, for a 5-year asset, for financial accounting each year would be
20%, but with the MACRS half-year convention, it would be 10% in year 1, 20% in years 2 through 5, and
10% in year 6.
Alternative Depreciation System (ADS)
ADS is another alternative to MACRS, with longer time periods and straight-line depreciation. This
enables the business to stretch their depreciation deductions over even longer periods that would be
useful if the profitable times are expected to be several more years in the future. Going back to the earlier
partial class lives table
, the last column is headed "ADS" and shows the longer depreciation lives for
common types of personalty assets. Comparing that last column to the one next to it, labeled "GDS,"
shows the longer lives assumed for most assets. While computers and automobiles stay at 5 years, office
furniture jumps from 7 to 10 years. Please be aware that ADS is the required depreciation system for the
Alternative Minimum Tax (AMT), so businesses subject to AMT may choose to use ADS to minimize the
extra taxes.
Special Rules
The final category of personalty is listed property. These are types of assets that are believed to be prone
to cheating, so the IRS requires that they be listed separately on the back of Form 4562. Included in this
category are automobiles and other transportation property, such as boats and motorcycles, as well as
computers and peripheral equipment, such as printers and scanners. The IRS requires businesses to
maintain a contemporaneous record of usage to substantiate the business usage claimed. If the business
uses the asset for both business and personal purposes, the type of depreciation depends on the
percentages. If business use is 50% or less, the business must use ADS on the business portion. If
business use is more than 50%, treat the business portion like any other personalty asset, with GDS
available.
Luxury Automobiles
The amount of depreciation businesses can take on automobiles, trucks, and vans is limited. This limit is
adjusted annually for inflation, so the numbers will change. For 2023, depreciation is limited to $19,200 of
which $8,000 may be bonus depreciation. This limitation is to prevent taxpayers from purchasing luxury
automobiles, such as a Ferrari, and writing it off as a business expense. This limitation does not apply to
vehicles over 6,000 pounds such as a large SUV, delivery truck, or van. If business use is less than
100%, multiply the relevant limit by the business use percentage to get the applicable limit. For example,
if business use is 40%, the limit would be 40% of $12,200 or $4,880. Basically, the depreciation would be
calculated normally with the resulting figure subjected to the applicable limit.