Depreciation Calculator Australia (ATO)
Calculate asset depreciation using Australian Tax Office approved methods: Prime Cost and Diminishing Value. Generate instant depreciation schedules for 2024-25 tax year.
Asset Details
Prime Cost (Straight-line) - Equal deductions each year
Common rates: 16% (low), 30% (medium/company), 37% (high), 45% (top)
📊 How Depreciation Deductions Work
Depreciation allows you to claim a tax deduction for the decline in value of assets used in your business or investment property. The ATO recognizes that assets wear out over time, and you can claim this loss as a deduction.
Two main categories:
- Division 40 (Plant & Equipment): Removable assets like appliances, furniture, computers, and machinery
- Division 43 (Capital Works): Structural elements like walls, floors, roofs (not covered by this calculator)
⚖️ Prime Cost vs Diminishing Value Methods
The ATO allows you to choose between two depreciation methods. You must select one when you first claim the deduction and continue using it for that asset.
| Feature | Prime Cost (Straight-Line) | Diminishing Value |
|---|---|---|
| Formula | Cost ÷ Effective Life | Base Value × (200% ÷ Effective Life) |
| Deduction Pattern | Equal amounts each year | Higher in early years, decreasing |
| Best For | Predictable budgeting | Maximizing early deductions |
| Total Deduction | Same over asset life | Same over asset life |
| Most Popular | 15% of taxpayers | 85% of taxpayers |
💡 Pro Tip: Most businesses choose Diminishing Value to get larger tax deductions upfront, improving cash flow in the early years.
🛠️ Common Depreciable Assets & Effective Life
The ATO provides effective life guidelines for thousands of assets in TR 2023/1. Here are common examples:
📱 Office & IT Equipment
- • Computers & laptops: 4 years
- • Office furniture: 13.33 years
- • Photocopiers: 5 years
- • Telephones: 10 years
🏠 Rental Property Items
- • Air conditioners: 10 years
- • Dishwashers: 8 years
- • Carpets: 8 years
- • Blinds & curtains: 6.67 years
🚗 Vehicles & Machinery
- • Motor vehicles: 8 years
- • Trucks (heavy): 10 years
- • Forklifts: 10 years
- • Tools (general): 4 years
🍽️ Hospitality & Retail
- • Commercial ovens: 10 years
- • Refrigerators: 12 years
- • Display cabinets: 13.33 years
- • Point of sale systems: 4 years
💼 Small Business Instant Asset Write-Off
Small businesses (aggregated turnover under $10 million) can instantly deduct the full cost of eligible assets under the temporary full expensing or instant asset write-off provisions.
✅ Current Thresholds (2023-24)
- Under $20,000: Instant write-off for eligible small businesses
- General Pool: Assets over threshold go into small business pool (15% year 1, 30% thereafter)
- Check eligibility: Time limits and specific rules apply
Note: Thresholds and eligibility change regularly. Check the ATO website for current rates.
📝 How to Claim Depreciation
Identify Eligible Assets
Only assets used for business or investment purposes qualify. Private use portions must be excluded.
Choose Your Method
Select Prime Cost or Diminishing Value when you first claim. This choice is permanent for that asset.
Calculate Depreciation
Use this calculator or the ATO's depreciation tool to determine your annual deduction amount.
Claim in Your Tax Return
Include depreciation in your business deductions or rental property expenses when lodging your tax return.
Keep Records
Maintain purchase receipts, depreciation schedules, and evidence of business use for at least 5 years.
❓ Frequently Asked Questions
What is the difference between Prime Cost and Diminishing Value depreciation? ▼
Prime Cost (straight-line) method provides equal deductions each year by dividing the asset cost by its effective life. Diminishing Value method provides higher deductions in early years, calculated as 200% ÷ effective life for assets acquired after 10 May 2006. Most businesses choose Diminishing Value for faster tax deductions upfront.
What is Division 40 depreciation? ▼
Division 40 covers depreciation of plant and equipment (removable assets) such as machinery, computers, furniture, appliances, and tools. These assets can be removed from the property and typically have shorter effective lives ranging from 3-15 years.
Can I claim depreciation on rental property assets? ▼
Yes, you can claim depreciation on rental properties for both plant and equipment (Division 40) and capital works (Division 43). However, assets purchased after 9 May 2017 in second-hand residential properties may have restrictions. New properties have no such limitations.
How do I find the effective life of an asset? ▼
The ATO provides effective life tables in their ruling TR 2023/1. Common examples: computers (4 years), office furniture (13.33 years), motor vehicles (8 years), and machinery varies by type. You can also choose to self-assess effective life based on your specific usage circumstances.
Can I change depreciation methods? ▼
No, once you choose a depreciation method (Prime Cost or Diminishing Value) for an asset, you must continue using that method for the life of the asset. Choose carefully when first claiming the deduction.
What assets can be instantly written off for small business? ▼
Small businesses (aggregated turnover under $10 million) can instantly write off eligible assets costing less than $20,000 (as of 2023-24). This temporary full expensing provision has specific eligibility criteria and time limits, so check current ATO guidelines.
Do I need a depreciation schedule for my tax return? ▼
While not mandatory to lodge with your tax return, a depreciation schedule prepared by a quantity surveyor is highly recommended for investment properties. It ensures you claim all eligible deductions and provides documentation if audited by the ATO.
Related Resources
Asset Depreciation Strategies for Small Business
Choose between Prime Cost and Diminishing Value for maximum tax benefits.
Investment Property Tax Deductions
Complete guide to negative gearing, depreciation, and deductible expenses.
Small Business Tax Deduction Checklist 2025
Business expense claims, instant asset write-off, and home office deductions.
Income Tax Calculator
Calculate your tax savings from depreciation deductions.
⚠️ Important Disclaimer
This calculator provides estimates based on ATO-approved depreciation methods. It is designed for general information purposes only and should not replace professional tax advice.
Tax laws change regularly, and individual circumstances vary. Always consult with a registered tax agent or qualified accountant for advice specific to your situation. For investment properties, consider obtaining a professional depreciation schedule from a quantity surveyor.
Methods approved by the Australian Taxation Office (ATO). Source: ATO TR 2023/1