Form 4562, “Depreciation and Amortization,” requires taxpayers to classify depreciable property based on its applicable recovery period under either the General Depreciation System (GDS) or the Alternative Depreciation System (ADS). This classification determines the correct recovery period, depreciation method, and convention used to compute depreciation deductions. Property classification is based on IRS-established class lives (see Pub. 946), not on arbitrary selection.
General Depreciation System (GDS) Classification
Under GDS, property is classified according to its recovery period, which is generally determined using IRS class life tables. For assets placed in service during the tax year beginning in 2025, use lines 19a through 19j on Form 4562.
The following are the standard GDS recovery periods:
- 3-year property: Property with a class life of 4 years or less.
- 5-year property: Property with a class life of more than 4 years but less than 10 years.
- 7-year property: Property with a class life of 10 years or more but less than 16 years.
- 10-year property: Property with a class life of 16 years or more but less than 20 years.
- 15-year property: Property with a class life of 20 years or more but less than 25 years.
- 20-year property: Property with a class life of 25 years or more.
- 25-year property: Generally applies to certain water utility property.
- Residential rental property: Real property where 80% or more of gross rental income is from dwelling units; recovery period is 27.5 years.
- Nonresidential real property: Real property not classified as residential rental property; recovery period is 39 years.
Alternative Depreciation System (ADS) Classification
ADS uses different recovery periods and is required in certain situations or elected by the taxpayer. For property placed in service during the tax year beginning in 2025, use lines 20a through 20e on Form 4562.
Property Required to Use ADS
The following types of property must be depreciated using ADS:
- Tangible property used predominantly outside the United States
- Tax-exempt use property
- Tax-exempt bond-financed property
- Imported property covered by an executive order
- Property used predominantly in farming when the taxpayer elects out of uniform capitalization rules (section 263A)
- Property held by an electing real property trade or business (section 163(j))
- Property with a recovery period of 10 years or more held by an electing farming business
ADS Recovery Periods
- General ADS property (Line 20a): Use applicable ADS recovery period based on class life
- Property with no class life (Line 20b)
- Residential rental property (Line 20c):
- 30 years (if placed in service after 2017)
- 40 years (if placed in service before 2018)
- Nonresidential real property (Line 20d): 40 years
- Water utility property and railroad gradings/tunnel bores (Line 20e): 50 years
Recovery Periods for Most Property
The following recovery periods generally apply under GDS unless ADS is required or elected:
- 3-year property → 3 years
- 5-year property → 5 years
- 7-year property → 7 years
- 10-year property → 10 years
- 15-year property → 15 years
- 20-year property → 20 years
- 25-year property → 25 years (limited use cases)
- Residential rental property → 27.5 years
- Nonresidential real property → 39 years
- Certain property under ADS (e.g., water utility property and railroad gradings/tunnel bores) → 50 years
Source:
Form 4562 Instructions (IRS)
Disclaimer: Always verify details with the current Federal or State Department of Revenue Forms and Instructions. Tax laws and regulations may change annually. For complex situations, consult a CPA or tax attorney.