ATO depreciation rates for power supply assets assets in the General industry, under Income Tax (Effective Life of Depreciating Assets) Determination 2025 (LI 2025/20).
11 assets listed.
| Asset | Effective life | Prime cost rate | Diminishing value rate | Applicable from |
|---|---|---|---|---|
| Acoustic hoods and canopies | 20 years | 5.00% | 10.00% | 1 July 2025 |
| Diesel | 10 years | 10.00% | 20.00% | 1 July 2025 |
| Generators (incorporating attached engine management and generator monitoring instruments) | 25 years | 4.00% | 8.00% | 1 July 2025 |
| Overhead (incorporating poles - concrete, wood, steel or stobie - and electrical equipment the responsibility of the private landholder such as conductors, cross arms etc) | 45 years | 2.22% | 4.44% | 1 July 2025 |
| Petrol Private electricity line assets (where used for a | 5 years | 20.00% | 40.00% | 1 July 2025 |
| Power management units | 15 years | 6.67% | 13.33% | 1 July 2025 |
| Service cables, overhead | 40 years | 2.50% | 5.00% | 1 July 2025 |
| Service cables, underground | 50 years | 2.00% | 4.00% | 1 July 2025 |
| Storage batteries | 15 years | 6.67% | 13.33% | 1 July 2025 |
| Underground (incorporating cables, fittings and ground pad mounted transformers) | 50 years | 2.00% | 4.00% | 1 July 2025 |
| Uninterruptible power supply (UPS) systems Generators, portable (incorporating attached engine management and generator monitoring | 15 years | 6.67% | 13.33% | 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.