Calculate depreciation schedules using MACRS methods by asset class and in-service year.
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Tax rates verified against official government sources for the 2025-2026 tax year
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Default convention for most assets placed in service during the year.
The Modified Accelerated Cost Recovery System (MACRS) is the primary depreciation method used for federal income tax purposes in the United States. Established by the Tax Reform Act of 1986, MACRS allows businesses to recover the cost of tangible property over a specified recovery period through annual depreciation deductions.
Under MACRS, assets are assigned to property classes that determine their recovery period. Personal property (equipment, vehicles, furniture) typically uses the General Depreciation System (GDS) with either the 200% or 150% declining balance method, switching to straight-line when it yields a larger deduction. Real property (buildings) uses the straight-line method over 27.5 or 39 years.
The half-year convention treats all property placed in service (or disposed of) during the year as if it were placed in service at the midpoint of the year. The mid-quarter convention must be used if more than 40% of the total depreciable basis of all property placed in service during the year is placed in service in the last quarter. Real property uses the mid-month convention.
In addition to regular MACRS deductions, businesses may be able to immediately expense qualifying assets under Section 179 (up to the annual limit) or claim bonus depreciation on eligible property. These provisions can significantly accelerate the tax benefits of asset purchases. Consult IRS Publication 946 and your tax professional for current limits and eligibility rules.
Disclaimer: This calculator provides estimates based on standard MACRS GDS depreciation tables from IRS Publication 946. Mid-quarter convention uses a simplified Q3 adjustment. Actual depreciation may differ based on your specific tax situation, placed- in-service date, Section 179 elections, bonus depreciation, and applicable tax law. This tool is for educational and estimation purposes only and does not constitute tax advice. Consult a qualified tax professional for guidance on your specific circumstances.