ATO depreciation rates for detection and alarm systems assets in the General industry, under Income Tax (Effective Life of Depreciating Assets) Determination 2025 (LI 2025/20).
9 assets listed.
| Asset | Effective life | Prime cost rate | Diminishing value rate | Applicable from |
|---|---|---|---|---|
| Alarm bells | 12 years | 8.33% | 16.67% | 1 July 2025 |
| Aspirated smoke | 12 years | 8.33% | 16.67% | 1 July 2025 |
| Detectors (including addressable manual call points, heat, multi type and smoke) | 20 years | 5.00% | 10.00% | 1 July 2025 |
| Fire indicator panels | 12 years | 8.33% | 16.67% | 1 July 2025 |
| Gas suppression cylinders Emergency warning and intercommunication | 25 years | 4.00% | 8.00% | 1 July 2025 |
| Heat | 20 years | 5.00% | 10.00% | 1 July 2025 |
| Manual call point (addressable type only) | 20 years | 5.00% | 10.00% | 1 July 2025 |
| Multi type | 20 years | 5.00% | 10.00% | 1 July 2025 |
| Smoke | 20 years | 5.00% | 10.00% | 1 July 2025 |
The effective lives shown above are determined by the Commissioner of Taxation under section 40-100 of the Income Tax Assessment Act 1997. The diminishing value rate equals 200% ÷ effective life (for assets acquired on or after 10 May 2006). The prime cost rate equals 100% ÷ effective life. You may alternatively self-assess effective life — see the ATO website for guidance.