IAS 16 · Government

Depreciation Calculator
for Government

Pre-configured for government and public sector entities with infrastructure assets, IPSAS cross-references, and guidance on heritage assets and public accountability requirements.

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IAS 16 Depreciation Audit Working Paper Template — free PDF

Practical audit guide covering all four depreciation methods with worked examples, component depreciation checklist, change-in-estimate documentation template, and useful life benchmarks by asset class.

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IAS 16 Depreciation for Government

Government and public sector entities hold the most extensive and long-lived PP&E portfolios of any sector. Roads, bridges, water infrastructure, public buildings, emergency vehicles, and defence assets represent national-scale investment. While IAS 16 applies to government entities reporting under IFRS, many public sector entities apply IPSAS (International Public Sector Accounting Standards), where IPSAS 17 Property, Plant and Equipment closely mirrors IAS 16 with additional guidance specific to the public sector context.

Infrastructure assets are the defining PP&E category for government. A road network, water distribution system, or bridge portfolio may have useful lives of 30 to 100 years. These assets require extensive component depreciation: a road comprises the sub-base (60–100 years), surface course (10–20 years), kerbs and drainage (30–50 years), and lighting (15–25 years). The surface course is resurfaced periodically — each resurfacing is capitalised and the old surface derecognised. This renewal approach means that the overall road asset is maintained at a relatively constant carrying amount through a combination of depreciation and periodic renewal investment.

Public accountability creates additional requirements for government PP&E depreciation. Government entities must demonstrate that they are managing public assets responsibly. This means more detailed asset registers, more rigorous useful life justifications, and more comprehensive reporting than is typical in the private sector. Heritage assets (historic buildings, monuments, cultural collections) present the same challenges as for nonprofits: indefinite useful lives, difficulty in valuation, and the question of whether depreciation is meaningful for assets that are maintained in perpetuity.

Typical Asset Classes — Government

Asset Useful Life Method Notes
Infrastructure (roads, bridges) 30–100 years Straight-line with components Very long lives; renewal accounting may apply
Public buildings 30–60 years Straight-line with components Component depreciation as for any building; heritage considerations
Fleet vehicles (emergency, utility) 5–10 years Straight-line Standardised depreciation across fleet
IT infrastructure 3–5 years Straight-line Same as commercial sector
Specialised assets (military, scientific) 10–30 years Straight-line No active market for residual value

Key IAS 16 Considerations — Government

IPSAS 17 mirrors IAS 16 with additional public sector guidance

Infrastructure assets require extensive component depreciation

Heritage assets: indefinite life (no depreciation) or very long life (minimal depreciation)

Renewal accounting for infrastructure maintains service potential

Public accountability requires detailed asset registers and reporting

Worked Example: Public Office Building

A government entity constructs a public office building completed in March 2025 for €10,000,000 (excluding land at €3,000,000). Component split: structure €7,000,000 (50 years), roof €1,200,000 (25 years), HVAC €1,000,000 (15 years), electrical €500,000 (20 years), lift €300,000 (20 years). Residual values set at zero for all components.

Cost: €10,000,000 (building components only — land excluded)

Residual value: €0 (across all components)

Depreciable amount: €10,000,000

Annual depreciation: €278,500 (aggregate of all components)

First year depreciation: €232,083 (pro-rata: 10 months — March to December)

Audit Considerations

Government entity auditors should consider IPSAS 17 requirements if applicable, the adequacy of infrastructure component depreciation, heritage asset accounting treatment, and public accountability obligations for asset management. National audit offices often have specific expectations for PP&E reporting.

Frequently Asked Questions — Government

What is the difference between IAS 16 and IPSAS 17 for government assets?
IPSAS 17 closely mirrors IAS 16 but includes additional guidance relevant to the public sector: heritage assets, infrastructure assets, and service potential as a basis for measurement. The depreciation rules are substantively the same. If your entity reports under IFRS (rather than IPSAS), IAS 16 applies directly with no modification.
How do I depreciate infrastructure assets like roads and bridges?
Apply component depreciation (IAS 16.43). A road: sub-base (60–100 years), surface course (10–20 years), kerbs and drainage (30–50 years), lighting (15–25 years). When a surface is resurfaced, derecognise the old surface and capitalise the new one. This renewal approach maintains the asset at its service potential.
Should heritage government buildings be depreciated?
If the building has a finite useful life, it must be depreciated. If its useful life is genuinely indefinite (maintained in perpetuity), depreciation is not charged, but annual impairment testing under IAS 36 is required. Many governments depreciate heritage buildings using very long lives (100+ years) rather than treating them as having indefinite lives.
How does renewal accounting work for infrastructure?
Renewal accounting (or renewals approach) recognises that infrastructure networks are maintained through periodic component replacements. Each replacement is capitalised and the replaced component is derecognised. Depreciation is charged on each component over its useful life. The net effect is that the overall infrastructure asset is maintained at approximately its service potential.
What useful life should I use for public sector vehicles?
Emergency vehicles (fire engines, ambulances): 8–12 years. Standard fleet vehicles: 5–8 years. Utility vehicles: 7–10 years. Military vehicles: 10–25 years depending on type. Base estimates on fleet management data and actual replacement cycles. Residual values are typically low for specialised emergency vehicles and higher for standard fleet vehicles.