Depreciation Calculator (USA)
Calculate asset depreciation using the straight-line method for accounting and tax purposes.
How to Calculate Depreciation
The straight-line method calculates equal annual depreciation over the asset's useful life:
Where:
- Cost: Initial purchase price of the asset
- Salvage Value: Estimated value at end of useful life
- Useful Life: Number of years the asset will be used
Calculate Depreciation
Depreciation Breakdown
Depreciation Chart Visualization
Yearly Depreciation Schedule
| Year | Opening Value | Depreciation | Closing Value |
|---|
Analysis & Recommendations
Your annual depreciation of $1,800 is Normal for the asset value.
- Ensure compliance with IRS depreciation schedules for tax purposes
- Keep detailed records of asset acquisition and disposal dates
- Consider Section 179 deductions for immediate expensing of qualifying assets
- Review asset useful life estimates annually for accuracy
Understanding Depreciation
Depreciation is the systematic allocation of the cost of a tangible asset over its useful life. It represents the decrease in value due to wear and tear, obsolescence, or age.
The straight-line method is the simplest way to calculate depreciation. It spreads the cost evenly across the asset's useful life:
This method provides consistent depreciation expenses year over year.
Under US tax law, different asset classes have specific recovery periods:
- Office furniture: 7 years
- Vehicles: 5 years
- Computers: 5 years
- Residential rental property: 27.5 years
- Commercial buildings: 39 years
Test Your Knowledge
If an asset costs $20,000, has a salvage value of $2,000, and a useful life of 6 years, what is the annual depreciation?
Using the formula: Annual Depreciation = (Cost - Salvage Value) / Useful Life
Annual Depreciation = ($20,000 - $2,000) / 6 = $18,000 / 6 = $3,000
Correct Answer: B) $3,000
Which factor does NOT affect the annual depreciation amount under the straight-line method?
The straight-line method formula uses only asset cost, salvage value, and useful life. Market value fluctuations do not affect the annual depreciation amount.
Correct Answer: D) Market value
True or False: Salvage value represents the estimated selling price of an asset at the end of its useful life.
Salvage value is indeed the estimated residual value of an asset after its useful life has ended, representing the expected selling price or trade-in value.
Correct Answer: A) True
Q&A
Q: What's the difference between book depreciation and tax depreciation?
A: Book depreciation and tax depreciation serve different purposes:
Book Depreciation:
- Used for financial reporting to shareholders
- Follows GAAP (Generally Accepted Accounting Principles)
- Based on actual useful life of the asset
- Matches revenues with expenses for accurate profit measurement
Tax Depreciation:
- Used for tax reporting to the IRS
- Follows MACRS (Modified Accelerated Cost Recovery System)
- Uses predetermined recovery periods regardless of actual useful life
- Often accelerates depreciation for tax benefits
This difference often results in temporary timing differences between book and tax income, which are tracked in deferred tax accounts.
Q: Can I change the depreciation method once I start depreciating an asset?
A: Yes, but changing depreciation methods requires IRS approval:
For Tax Purposes:
- You must file Form 3115 (Application for Change in Accounting Method)
- Requires consent from the IRS
- May involve adjustments to prior years' returns
- Typically allowed only if it creates more accurate financial statements
For Book Purposes:
- Changes are made prospectively (going forward only)
- No prior period adjustments required
- Must be disclosed in financial statement notes
- Requires justification for the change
It's generally better to select the appropriate method initially rather than changing later.