IRS MACRS Depreciation Calculator
Compare MACRS, §179, Bonus Depreciation, GDS Straight-Line and ADS side by side — modelled on IRS Publication 946
Asset Details
Available Methods
Summary — MACRS GDS
Adjusted Tax Basis — All Methods Compared
Managing more than one asset?
AssetAccountant automates MACRS-compliant depreciation across your entire register — no spreadsheets required.
Disclaimer: This calculator is provided for general information and demonstration purposes only. Results are estimates modelled on IRS Publication 946 and applicable MACRS rules. Bonus depreciation rates: 50% (2017), 100% (2018–2022), 80% (2023), 60% (2024), 40%/100% (2025 per OBBBA), 100% (2026+). §179 limits change annually. Section 179 is subject to taxable income limitations and phase-out rules not fully reflected here. AssetAccountant does not guarantee accuracy or completeness. This does not constitute tax advice — always verify with a qualified CPA or tax professional.
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Whether you are a business owner calculating a first-year depreciation deduction for new equipment, a CPA verifying a Section 179 election, or a controller building a MACRS depreciation schedule for a full asset register — this page gives you everything you need.
Use the free MACRS depreciation calculator above to compare GDS, ADS, Section 179, and Bonus Depreciation side by side. All calculations are modelled on IRS Publication 946 — How To Depreciate Property.
Scroll down for a complete guide: how MACRS works, all depreciation methods explained, 100% bonus depreciation rates for 2025, Section 179 expensing limits, vehicle caps, a MACRS depreciation table, and a detailed FAQ.
What Is MACRS Depreciation?
MACRS stands for Modified Accelerated Cost Recovery System. It is the primary method of tax depreciation in the United States. Congress introduced it in the Tax Reform Act of 1986.
Since then, it has applied to virtually all tangible business property placed in service by US taxpayers. The legal basis is Internal Revenue Code §168. IRS Publication 946 is the official explanatory guide.
For a deeper breakdown, see our guide What is MACRS depreciation?
Under MACRS, the IRS assigns every asset to a property class. Each class has a fixed recovery period — the number of tax years over which you recover the cost.
Shorter periods mean larger annual deductions and a faster write-off.
MACRS Property Classes and Recovery Periods
- 3-year property: tractor units for over-the-road use, racehorses
- 5-year property: computers, tablets, light vehicles, EVs, office machinery, heavy trucks over 6,000 lbs GVWR
- 7-year property: office furniture, manufacturing equipment, agricultural machinery, construction equipment, medical and dental equipment
- 10-year property: vessels, barges, single-purpose agricultural structures
- 15-year property: land improvements — fences, roads, parking lots, landscaping
- 20-year property: farm buildings (non-residential)
- 27.5-year property: residential rental buildings and apartments
- 39-year property: nonresidential commercial and industrial buildings
If an asset is not listed in IRS Rev. Proc. 87-56 — the official asset class table — it defaults to 7-year GDS property.
Key Terms at a Glance
Recovery period — the number of tax years over which the asset’s cost is recovered.
Adjusted basis — the asset’s original cost minus accumulated depreciation to date.
Placed in service — the date the asset is ready and available for its intended use. Depreciation begins on this date — not the purchase date.
Crossover year — the year when straight-line on remaining basis exceeds the declining balance charge. MACRS switches automatically.
Depreciation recapture — when you sell a depreciated asset, the IRS recaptures prior deductions as ordinary income under IRC §1245 (personal property) or §1250 (real property).
How Long Does It Take to Depreciate Business Assets?
Under MACRS, the recovery period depends on the property class. Most equipment and vehicles are 5-year or 7-year property. Office furniture is 7-year. Land improvements are 15-year. Buildings take 27.5 or 39 years.
With 100% Bonus Depreciation, any qualifying asset can be fully deducted in year one regardless of its recovery period.
Without bonus, enter the asset details in the MACRS depreciation calculator above to see the full year-by-year schedule.
Why MACRS Saves More Tax Than Straight-Line
Straight-line depreciation spreads equal deductions across every year of the recovery period. MACRS uses accelerated rates.
You deduct more in early years and less later.
That front-loading matters. A dollar of tax saved today is worth more than the same dollar saved five years from now.
MACRS maximises the present value of your deductions — which means more cash in your business now.
What Assets Qualify for MACRS Depreciation?
Most tangible business property placed in service in the US after 1986 qualifies for MACRS.
This includes equipment, machinery, vehicles, computers, furniture, and improvements. It also includes residential rental buildings and commercial real estate.
Assets that do not qualify for MACRS include intangible property (amortised separately), inventory, land (which never depreciates), and property placed in service before 1987 that was already being depreciated under ACRS or another pre-MACRS method.
MACRS GDS vs ADS — Which System Applies?
MACRS contains two systems. The General Depreciation System (GDS) is the default for most US businesses. The Alternative Depreciation System (ADS) uses longer recovery periods and straight-line rates — slower cost recovery.
Most taxpayers use GDS because it delivers larger early-year deductions. However, ADS is mandatory in specific situations.
When ADS Is Required
You must use ADS — and cannot elect GDS — for:
- Listed property used 50% or less for business — vehicles, computers with limited business use
- Property used predominantly outside the United States
- Tax-exempt use property and tax-exempt bond-financed property
- Certain imported property covered by Executive Order
- Farm property where the taxpayer elected out of uniform capitalization rules
ADS recovery periods are longer. Five-year GDS becomes 9 years under ADS. Seven-year GDS becomes 12 years. Residential rental (27.5-year GDS) becomes 30 years under ADS.
ADS and the Alternative Minimum Tax (AMT)
ADS is required for computing the depreciation adjustment in the corporate AMT calculation. If your business is subject to AMT, you need both GDS and ADS figures. The calculator shows ADS automatically alongside GDS in every calculation.
Electing ADS Voluntarily
A taxpayer can elect ADS even when GDS is permitted. This might make sense when higher income is expected in future years. The election is irrevocable for that property class in the year it is made.
MACRS Depreciation Methods — All Five Explained
200% Declining Balance (200DB) — The Standard MACRS Method
The 200DB method is the default GDS rate for 3-, 5-, 7-, and 10-year property. Each year, the deduction equals the remaining adjusted basis multiplied by twice the straight-line rate.
200DB Formula:
Annual Deduction = Adjusted Basis × (200% ÷ Recovery Period)
Example: 7-year property → rate = 200 ÷ 7 = 28.57%. With Half-Year convention in year one: 28.57% × 50% = 14.29% of cost. This matches the IRS Publication 946 Appendix A table exactly.
MACRS automatically switches to straight-line in the crossover year — when straight-line on remaining basis produces a larger deduction. This maximises the total deduction in every year.
150% Declining Balance (150DB)
The IRS requires 150DB for 15-year and 20-year property — land improvements, fences, roads, and farm buildings. It works the same way as 200DB but uses 1.5 times the straight-line rate. The switch to straight-line applies at the crossover year.
Straight-Line Depreciation (GDS SL Election)
Any taxpayer can elect straight-line over the GDS recovery period instead of declining balance. The annual deduction equals cost divided by recovery period, adjusted in year one by the applicable convention. Section 179 and Bonus Depreciation can still be applied before the straight-line method runs on the remaining basis.
MACRS vs Straight-Line — Side-by-Side Comparison
Section 179 Expensing — First-Year Write-Off
Section 179 of the IRC lets a business deduct the full cost of qualifying property in the year it is placed in service. There is no multi-year schedule — the asset is fully expensed in year one.
Section 179 has two key limitations:
- Annual dollar cap — $2,500,000 for 2025 (see Section 5 for full table)
- Taxable income limitation — the deduction cannot exceed net taxable income from active business. Excess carries forward — it does not disappear.
Bonus Depreciation — Additional First-Year Deduction
Bonus Depreciation under IRC §168(k) allows a percentage of adjusted basis to be deducted in year one — on top of regular MACRS. It runs after any Section 179 election and before MACRS on the remaining basis.
To get the most out of these elections, read Maximizing Tax Benefits Through Fixed Asset Depreciation Strategies.
Bonus has no dollar cap and no income limitation. It can create a net operating loss (NOL), which carries forward to offset future income. That makes it more aggressive — and more powerful — than Section 179 for large purchases.
IRS Year-One Ordering Rule:
- §179 deduction first
- Bonus Depreciation on the remaining basis
- MACRS on whatever basis remains
Bonus Depreciation Rates for 2025 — The OBBBA Change
Bonus depreciation rates have changed significantly since 2017. The 2025 rate is especially important — it splits mid-year.
The Tax Cuts and Jobs Act of 2017 (TCJA) set the rate at 100% through 2022. Rates then began phasing down 20 points per year. The One Big Beautiful Budget Act (OBBBA), signed in 2025, restored 100% bonus for property acquired on or after January 19, 2025.
Qualifying equipment purchased in 2025 (on or after January 19) can be 100% expensed in year one. The same asset bought in 2024 qualified for only 60%.
Enter your acquisition date in the calculator — the correct rate applies automatically.
100% Bonus Depreciation in 2025 — What It Means for Your Business
With 100% bonus depreciation restored for assets acquired on or after January 19, 2025, the tax impact is significant.
A business that buys $200,000 of qualifying equipment in 2025 can deduct the entire amount in that tax year.
This applies to most new and used tangible personal property with a MACRS recovery period of 20 years or less. Buildings and structural components do not qualify for bonus depreciation.
Section 179 Deduction Limits for 2025
The Section 179 deduction limit for 2025 is $2,500,000. It phases out dollar-for-dollar once total qualifying purchases exceed $4,000,000. It disappears entirely at $6,500,000.
Section 179 and the Heavy SUV Cap
Heavy SUVs (6,001–14,000 lbs GVWR) face a separate, lower §179 cap: $31,300 for 2025.
Full-size pickup trucks with a cargo bed of at least six feet are exempt from this cap. Cargo vans with no rear passenger seating are also exempt.
Section 179 vs Bonus Depreciation — Which Is Better?
Vehicle Depreciation — §280F Caps and the Heavy Truck Exception
Vehicles get their own MACRS rules under §280F. Everything depends on Gross Vehicle Weight Rating (GVWR) — not price, fuel type, or size.
§280F Annual Caps — Passenger Cars and Light SUVs
For vehicles at or under 6,000 lbs GVWR, the IRS caps the combined total of §179 + Bonus + MACRS each year. These are not separate limits.
A $60,000 passenger car can take more than 10 years to fully write off because of these caps. The calculator shows the exact recovery timeline.
GVWR Is the Deciding Factor
The §280F caps apply to any vehicle at or under 6,000 lbs GVWR — including electric vehicles. Many EVs exceed this threshold because of battery weight. That places them in the heavy SUV category with no annual caps.
Always check the Federal certification sticker on the driver’s door jamb for the official GVWR — not the manufacturer’s marketing weight or curb weight. The door jamb number is what the IRS uses.
Vehicle Categories and Tax Treatment at a Glance
Section 45W — Commercial Clean Vehicle Credit
Businesses that placed qualifying commercial EVs in service before September 30, 2025 may claim the §45W credit. Maximum: $7,500 for vehicles under 14,000 lbs GVWR and $40,000 for heavier vehicles.
The credit reduces the vehicle’s tax basis before any depreciation is calculated. Use the §45W toggle in the calculator to apply this adjustment automatically.
How to Use the MACRS Depreciation Calculator — Step by Step
The calculator requires four inputs. Complete them and it instantly generates a full depreciation schedule plus a comparison chart for every applicable method.
Step 1 — Select an Asset Category
Choose the category that matches your asset. The calculator sets the GDS period, ADS period, declining-balance rate, §179 limits, and any §280F vehicle cap rules automatically. For vehicles, the weight category is critical — it determines every rule that applies.
Step 2 — Enter the In-Service Date
The in-service date is when the asset is placed in service — ready and available for use. This is not the purchase date or delivery date. For equipment requiring installation, it is the date installation is complete.
This date controls three things. First, it sets the tax year. Second, it sets the convention fraction in year one. Third, it determines the bonus rate — critical for the 2025 mid-year split.
Step 3 — Choose the Convention
Half-Year convention — the default for most personal property. Gives 50% of the annual allowance in year one, regardless of purchase date.
Mid-Quarter convention — required when more than 40% of total depreciable personal property cost is placed in service in Q4. Applies to all personal property that year — not just Q4 assets.
Mid-Month convention — applies only to residential and nonresidential real property. The calculator sets this automatically.
Step 4 — Enter the Asset Cost
Enter the full acquisition cost — purchase price plus capitalised costs such as delivery, installation, and sales tax. Do not reduce for salvage value; MACRS uses the full cost basis.
Step 5 — Elect Section 179 and Bonus (Optional)
Check the §179 box to apply the maximum §179 deduction. Check the Bonus box to apply the current bonus rate. The calculator shows §179, Bonus, and MACRS as separate line items in year one so you see exactly how they combine.
MACRS Depreciation Schedule Example — $50,000 Equipment
Asset: $50,000 manufacturing equipment | Category: 7-year MACRS (200DB)
Convention: Half-Year | Tax year: 2025 | Bonus: not elected
Why 8 years for 7-year property?
The Half-Year convention gives half the annual allowance in year one. That pushes the final deduction into a partial eighth year. This is correct — it matches IRS Publication 946 Appendix A exactly.
With 100% Bonus Depreciation elected (assets acquired on/after January 19, 2025), the entire $50,000 is deducted in tax year 2025. Adjusted basis drops to zero immediately.
MACRS Depreciation Table — Official Rates for All Property Classes
The table below shows the official MACRS GDS percentage rates from IRS Publication 946 Appendix A for the most common property classes under the Half-Year convention.
IRS pre-calculates these rates and includes the automatic 200DB-to-SL switch at the crossover year.
For the Mid-Quarter or Mid-Month conventions, use the tables in IRS Publication 946 Appendix A — or let the calculator apply the correct rate automatically.
MACRS Depreciation for Real Property
Residential and commercial buildings follow different MACRS rules from personal property.
- No Bonus Depreciation — standard buildings
- No Section 179 — standard buildings
- Mid-Month convention instead of Half-Year
- Straight-line only — no declining balance
- Recovery periods: 27.5 years (residential) or 39 years (nonresidential)
Using the MACRS Depreciation Calculator for Rental Property
To calculate rental property depreciation: select Residential rental building (27.5-yr) in the calculator, enter the placed-in-service date, and enter the building cost basis.
Land is never depreciable — enter only the building value, not the full property purchase price. A cost segregation study can reclassify building components as 5-, 7-, or 15-year personal property, unlocking Bonus Depreciation on those components.
Residential Rental Property — 27.5-Year MACRS
Residential rental buildings use a 27.5-year straight-line GDS period. If you place a rental property in service in March, you receive 9.5 months of depreciation in year one under the Mid-Month convention.
Nonresidential Real Property — 39-Year MACRS
Commercial buildings, offices, warehouses, and retail facilities use a 39-year straight-line period under GDS. ADS uses 40 years.
Qualified Improvement Property (QIP) — The Bonus and §179 Exception
QIP is any improvement to the interior of a nonresidential building placed in service after the building was first used, excluding elevators, escalators, structural framework, and enlargements. QIP has a 15-year GDS recovery period and qualifies for Bonus Depreciation and Section 179.
Cost Segregation — Reclassifying Building Components
A cost segregation study identifies building components that qualify as personal property with 5-, 7-, or 15-year recovery periods. Those components then qualify for Bonus Depreciation. A single study on a commercial building can generate deductions in year one that a 39-year schedule would spread across decades.
MACRS and IRS Form 4562 — How to Report Depreciation
Every business claiming a depreciation deduction must file IRS Form 4562, Depreciation and Amortization, attached to the federal income tax return.
- Part I — Section 179 election. List each §179 asset, cost, and elected deduction.
- Part II — Bonus Depreciation. Enter cost of qualifying property and the bonus deduction.
- Part III — MACRS depreciation on assets not fully expensed in year one. Section B covers ongoing multi-year schedules.
The MACRS depreciation calculator gives you the exact numbers for each section. Use the year-one row for Parts I and II. Use the full schedule for Part III in subsequent years.
MACRS Depreciation Recapture — What Happens When You Sell an Asset
Depreciation recapture is one of the most important — and most overlooked — aspects of MACRS. When you sell a depreciated business asset, the IRS recaptures the prior deductions as ordinary income.
How Recapture Works for Personal Property — IRC §1245
For personal property (equipment, vehicles, computers), the IRS recaptures all depreciation taken as ordinary income when the asset is sold at a gain.
The recapture amount equals the lesser of: the total gain on sale, or the total depreciation claimed.
You buy equipment for $50,000 and fully depreciate it to $0 under MACRS. You later sell it for $20,000.
The full $20,000 gain is recaptured as ordinary income under §1245 — taxed at your ordinary income rate, not the capital gains rate.
How Recapture Works for Real Property — IRC §1250
For real property, only the depreciation in excess of straight-line is recaptured as ordinary income under §1250.
Since MACRS uses straight-line for residential and nonresidential real property, §1250 recapture is typically zero for most real property situations.
However, unrecaptured §1250 gain (the straight-line depreciation portion) is taxed at a maximum 25% rate.
Common MACRS Mistakes — And How to Avoid Them
Using the Wrong Property Class
Misclassifying an asset is the most common MACRS error. Equipment not in Rev. Proc. 87-56 defaults to 7-year GDS. For vehicles, always use the GVWR from the door jamb sticker — not curb weight or marketing specs.
Missing the Mid-Quarter Convention Trigger
The Mid-Quarter convention applies when more than 40% of depreciable personal property cost falls in Q4 — by dollar amount. It applies to every personal property asset placed in service that year, not just Q4 assets. Missing this trigger overstates year-one deductions.
Confusing the In-Service Date with the Purchase Date
MACRS begins on the in-service date — when the asset is ready and available for use. A machine purchased in November but not operational until February is placed in service in February. Using the purchase date shifts depreciation into the wrong tax year.
Applying §179 or Bonus to Standard Real Property
Residential rental and commercial buildings do not qualify for Section 179 or Bonus Depreciation. Only QIP qualifies. Applying §179 or Bonus to the full building cost is a mistake an IRS audit will catch.
Forgetting to Reduce Basis for the §45W Credit
If you claim the §45W credit, reduce the vehicle’s depreciable basis by the credit amount before calculating any MACRS, §179, or Bonus deduction. The calculator’s §45W toggle handles this automatically.
Ignoring Depreciation Recapture When Planning Asset Disposals
Fully expensing an asset under bonus depreciation creates a zero basis. Any future sale proceeds will likely be fully recaptured as ordinary income under §1245. Model the recapture impact before making large expensing elections on assets with a short expected hold period.
Automate MACRS Depreciation Across Your Entire Asset Register
The free MACRS depreciation calculator on this page handles one asset at a time. It is the right tool for a quick check, a second opinion, or understanding how a specific method works.
Looking for the right tool to manage it all? See our Best Fixed Asset Accounting Software in 2026: Reviewed & Compared guide.
If your business manages multiple assets — equipment, vehicles, improvements, and real property across different tax years — manual calculations carry real risk. A wrong property class, a missed mid-quarter trigger, or an outdated bonus rate on a single asset creates an error that compounds every year.
