Financial Glossary
200DB HY Depreciation Method
The 200DB HY depreciation method is a Modified Accelerated Cost Recovery System (MACRS) convention that applies the 200% (double) declining balance method combined with the half-year convention. Under it, an asset is treated as placed in service at the midpoint of the year, so only half a year's depreciation is taken in the first and final years, while interim years use accelerated double-declining-balance rates. It is the default method for many types of business personal property under MACRS before switching to straight-line when that yields a larger deduction.
Problem & Application
Business owners see 200DB HY on depreciation schedules and IRS tax software output but rarely understand why first-year depreciation looks smaller than expected. Equipment-heavy operations like campgrounds and short-term rentals frequently have assets that fall into MACRS classes using this method. Understanding it helps owners reconcile their tax depreciation to their book records and plan asset purchase timing.
In Short
200DB HY is the standard accelerated MACRS treatment for much business property, and recognizing it clarifies why depreciation is spread the way it is.