Fixed Asset Depreciation Rate Calculator & Life Lookup Tool

Depreciation calculators

Use the right calculator for your jurisdiction

Choose a country-specific calculator based on local tax rules and depreciation methods.

ATO Depreciation Calculator

Calculate Division 40 depreciation for Australian businesses — modelled on ATO tax ruling TR 2024/1

🇦🇺 ATO / Div 40 📐 Prime Cost 📉 Diminishing Value ⚡ Instant Write-Off ⚖️ Compare Both

Asset Details

Select a category above
Commissioner's rate or self-assessed (years)
$

Depreciation Method

📉
Diminishing
Value
200% rate
📐
Prime
Cost
Straight-line
⚖️
Compare
Both
Side by side

Instant Asset Write-Off may apply

Assets under $20,000 may qualify for an immediate full deduction in the year of purchase (FY2024–25, aggregated turnover < $10M). Confirm eligibility with your tax advisor.

ATO Note: Under Division 40 (ITAA 1997), assets are depreciated to zero — there is no residual or scrap value in the ATO formula. Year 1 is pro-rated by days held in the income year. If you sell the asset for more than its written-down value, a balancing adjustment applies.

Summary

Year 1 Deduction
Enter asset details
Total Deductions
Over effective life
Avg Annual Deduction
Per financial year

Depreciation Curve — Book Value Over Time

Enter asset details to see the depreciation curve

Managing more than one asset?

AssetAccountant automates ATO-compliant depreciation across your entire register — no spreadsheets required.

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Disclaimer: This calculator is provided for general information and demonstration purposes only. Results are estimates based on the inputs provided and the methodology modelled on ATO tax ruling TR 2024/1. AssetAccountant does not guarantee the accuracy, completeness or suitability of these results for any particular purpose. This calculator does not constitute tax advice and should not be relied upon as such. Tax laws and ATO rulings change — always verify calculations with a qualified tax professional or registered tax agent before making any financial or tax decisions.

New Zealand visitors
Looking for the NZ IRD depreciation calculator instead?
We also have a dedicated New Zealand calculator built for IRD depreciation rules. If you're calculating depreciation for NZ assets, use the country-specific tool here.
NZ-specific
IRD-aligned
Built for New Zealand businesses
Open NZ IRD calculator
For New Zealand depreciation calculations

This depreciation calculator helps businesses calculate fixed asset depreciation rates and effective life using current ATO rules.

It supports both diminishing value and prime cost methods, allowing you to compare results and apply the most suitable approach for your assets.

Calculate your fixed asset depreciation rate / effective life

This AssetAccountant tool allows you to quickly calculate fixed asset depreciation rates and effective life using current ATO guidance.

Instead of relying on static lookup tables, you can search for assets and instantly determine the appropriate depreciation rate and useful life.

The calculator is built using Australian Taxation Office (ATO) rules, with additional New Zealand IRD references where applicable.

See how fixed asset depreciation is automated

Watch a short demonstration of how AssetAccountant calculates depreciation, applies ATO-compliant rules, and manages your asset register without spreadsheets.

AssetAccountant’s fixed asset depreciation calculator is quick and easy to use

AssetAccountant’s depreciation calculator provides a faster and more accurate way to perform fixed asset depreciation calculations.

Simply enter an asset description (for example, motor vehicle), and the tool will return:

  • the relevant effective life
  • applicable depreciation rates
  • results under both methods

This removes the need for manual lookup and reduces the risk of calculation errors.

The calculator above helps ensure you are applying depreciation correctly and in the most tax-efficient way, supporting accurate calculations of annual taxable income and potential tax savings.

For businesses managing more complex asset registers, AssetAccountant™ software keeps depreciation accurate, consistent, and fully accessible without manual effort.

How to use the fixed assets depreciation calculator

Use the calculator above to quickly identify the correct asset category and apply the appropriate depreciation treatment.

Instead of relying on manual lookup tables or keyword-based searches, you can:

  • select the asset category directly
  • apply ATO-compliant depreciation methods
  • compare available calculation approaches


This ensures more accurate results and removes the need for manual interpretation of depreciation rates and effective life.

AssetAccountant’s fixed asset depreciation software makes calculating depreciation of assets easy

Fixed asset depreciation should not be managed in spreadsheets beyond the most basic use cases (for example, where only a small number of assets are being depreciated).

AssetAccountant provides automated depreciation workflows with built-in localised tax and accounting rules, ensuring accuracy and consistency across your asset register.

Eliminate manual spreadsheets and simplify how you manage depreciation.

Try the cloud-based platform for free today.

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Automate fixed asset depreciation across your entire register with ATO-compliant calculations, built-in rules, and complete audit visibility — all in one platform.
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