MACRS Depreciation Calculator
Generate year-by-year depreciation schedules using the Modified Accelerated Cost Recovery System under IRC Section 168.
What Is MACRS Depreciation?
The Modified Accelerated Cost Recovery System (MACRS) is the tax depreciation method required by the IRS under IRC Section 168 for most tangible business property placed in service after 1986. MACRS allows businesses to recover the cost of an asset over a specified recovery period through annual deductions that reduce taxable income. Unlike straight-line depreciation used in financial accounting (GAAP), MACRS front-loads deductions by applying a declining balance method that switches to straight-line when it yields a larger deduction. The system assigns assets to property classes with fixed recovery periods: 3-year (tractors, certain manufacturing tools), 5-year (computers, vehicles, office equipment), 7-year (office furniture, most machinery), 15-year (land improvements, restaurant property), 27.5-year (residential rental real property, straight-line only), and 39-year (nonresidential commercial real property, straight-line only). Most personal property uses the 200% declining balance method with a half-year convention. Bonus depreciation under IRC Section 168(k) -- which allowed 100% first-year expensing through 2022 -- is phasing down: 60% in 2024, 40% in 2025, 20% in 2026, and 0% from 2027 unless Congress extends it.
How to Use This Calculator
Enter the Asset Cost Basis
Input the total cost of the asset including purchase price, sales tax, delivery, and installation. Do not include land value for real property.
Select the Recovery Period
Choose the IRS asset class: 3, 5, 7, 10, 15, 20, 27.5, or 39 years. The IRS assigns classes based on asset type in Revenue Procedure 87-56.
Choose the Convention
Half-year (most common), mid-quarter (required if >40% of assets placed in service in Q4), or mid-month (for real property).
Key Concepts
Half-Year Convention
Treats all property as placed in service at the midpoint of the tax year. Year 1 deduction is 50% of the full-year amount. Applies to most personal property.
Mid-Quarter Convention
Required when more than 40% of total annual asset additions are placed in service in Q4. Each asset gets a deduction based on the quarter it was placed in service.
200% Declining Balance (GDS)
The General Depreciation System doubles the straight-line rate each year, then switches to straight-line when that yields a larger deduction.
Bonus Depreciation (168(k))
Additional first-year deduction: 40% for 2025. Applies to new and used property with a recovery period of 20 years or less. Phase-down continues through 2026.
Cost Basis
Purchase price plus all costs to acquire, transport, and install the asset. Does not include land. Reduced by any trade-in allowance or like-kind exchange basis.
Recapture (IRC 1245/1250)
When you sell a depreciated asset for more than its adjusted basis, previously claimed depreciation is "recaptured" and taxed as ordinary income up to the original cost.
Expert Insights
Depreciation Is Not Optional: The IRS requires you to depreciate business assets regardless of whether you claim the deduction. If you fail to claim depreciation, you must still reduce your basis as if you had, meaning you lose the tax benefit but still face recapture on sale. This "allowed or allowable" rule under IRC Section 1016(a)(2) catches many uninformed taxpayers off guard when they sell property.
Section 179 vs. Bonus Strategy: With bonus depreciation phasing down to 40% in 2025 and 20% in 2026, Section 179 expensing becomes increasingly important for small businesses wanting immediate deductions. The key difference: Section 179 has a business income limitation (you cannot create a loss), while bonus depreciation does not. Strategic timing of asset purchases between Q4 of one year and Q1 of the next -- and choosing between 179 and bonus -- can shift tens of thousands in tax liability between years.
Cost Segregation Studies: Always run a cost segregation study on commercial real property exceeding $1 million. Reclassifying building components (HVAC, electrical, plumbing) from 39-year property to 5, 7, or 15-year property can accelerate hundreds of thousands in deductions.
Frequently Asked Questions
This calculator provides estimates for educational purposes only. Tax laws change frequently and individual circumstances vary. These estimates do not constitute tax advice. Consult a qualified CPA or tax professional before making tax-related decisions.
Run These Numbers Too
Section 179 Deduction Calculator
Determine how much of your business equipment purchase you can expense immediately under IRC Section 179 instead of depreciating over multiple years.
Small Business Tax Estimator
Project your combined federal income tax, self-employment tax, and Section 199A QBI deduction as a sole proprietor, LLC, or S-corp.
Capital Gains Tax Calculator
Estimate federal tax on investment profits including the 0%/15%/20% long-term rates and the 3.8% Net Investment Income Tax under IRC Section 1411.
Maximize Your Depreciation Deductions
Work with a qualified CPA or tax advisor to optimize asset classification and timing.
Find Tax Professionals