IAS 40 Investment Property: Fair Value Model, Cost Model and Classification

Property held to earn rent or for capital gain is accounted for differently from property a business uses itself. IAS 40 gives real estate investors and any company with significant property holdings a choice between a fair value model — rare in IFRS for routing value changes through profit — and a cost model. This guide explains classification, the two models, transfers, and why the distinction matters.

What qualifies as investment property?

Investment property is property — land, a building, or part of a building — held to earn rental income, for capital appreciation, or both, rather than for use in producing goods or services or for administrative purposes, and not for sale in the ordinary course of business. The defining feature is that it generates cash flows largely independently of the entity’s other assets, because it is held for its investment return rather than its operational use.

This separates it cleanly from owner-occupied property, which falls under IAS 16, and from property held for sale as inventory, which falls under IAS 2. A building a company occupies as its head office is owner-occupied; the same building let to third-party tenants is investment property. Mixed-use properties may need to be split between the two classifications.

How does the fair value model work?

The fair value model is the distinctive feature of IAS 40. Under it, investment property is remeasured to fair value at each reporting date, and the change in fair value is recognised directly in profit or loss for the period. This is unusual within IFRS — most asset value changes go to other comprehensive income or are not recognised at all — and it means a property investor’s reported profit can be driven heavily by valuation movements rather than rental income.

Once an entity chooses the fair value model, it applies it to all its investment property, and fair value must reflect market conditions at the reporting date. The model gives users a current view of property values but introduces significant volatility, since profit rises and falls with the property market. This is why real estate investment companies’ results can swing sharply even when rental cash flows are stable.

How does the cost model differ?

Under the cost model, investment property is carried at cost less accumulated depreciation and impairment, exactly as property, plant and equipment is under IAS 16. Value changes do not flow through profit or loss. However, even an entity using the cost model must disclose the fair value of its investment property in the notes, so users can still see current values, just not on the face of the statements.

The choice between models is significant and, in practice, somewhat path-dependent: many property-focused entities adopt fair value for its relevance to investors, while entities with incidental property holdings prefer the cost model’s simplicity and reduced volatility. The chosen model is applied consistently to all investment property, reflecting the IFRS principle of consistent accounting policy.

How are transfers between categories handled?

Property can change use — an owner-occupied building may be let out, or an investment property may be brought into operational use. IAS 40 governs transfers into and out of investment property, triggered by a change in use evidenced by management’s actions. When the fair value model is used, the accounting on transfer depends on the direction: a transfer from owner-occupied property to investment property at fair value treats the revaluation up to transfer date under IAS 16, with subsequent changes under IAS 40.

These transfers require careful documentation of the change in use and its date, because they shift the asset between accounting regimes with different measurement and profit-recognition consequences. For groups with evolving property portfolios, a clear policy on what constitutes a change in use prevents inconsistent or opportunistic reclassification.

Why does the investment property distinction matter for analysis?

The classification and model choice profoundly affect how a company’s results read. A property investor using the fair value model reports revaluation gains and losses in profit, so its earnings blend rental income with market movements; an analyst must separate the two to understand underlying performance. An operating company holding property at cost under IAS 16 shows a steadier but less current picture.

For anyone analysing real estate exposure across a group, understanding which properties are investment property, which model applies, and how much of reported profit is valuation-driven is essential. It connects to the broader theme that IFRS measurement choices shape the story the accounts tell, a thread that runs through every standard in our IFRS hub.

How is fair value of investment property determined?

When the fair value model is used, fair value is the price that would be received to sell the property in an orderly transaction between market participants at the reporting date, determined in accordance with IFRS 13. In practice this draws on market evidence such as current prices for similar properties, recent transactions, and income-based valuation techniques that capitalise expected rental cash flows. Where the market is active and transparent, fair value is more reliable; in thin or volatile markets, it requires significant judgment.

Because the fair value of investment property flows directly into profit, the quality and independence of the valuation matter enormously. Many entities engage qualified external valuers and disclose the valuation approach, the key inputs, and the level within the IFRS 13 fair value hierarchy. Robust valuation governance protects against the risk that subjective property valuations distort reported earnings, an issue that intensifies when property markets move sharply.

How does investment property interact with deferred tax and consolidation?

Investment property measured at fair value creates temporary differences between its carrying amount and its tax base, giving rise to deferred tax under IAS 12. Where the fair value model is used, IAS 12 includes a specific rebuttable presumption that the carrying amount will be recovered through sale, which affects the tax rate applied to the temporary difference. This interaction is easy to overlook and can materially affect the deferred tax position of property-rich entities.

On consolidation, a group must apply a consistent investment property policy and eliminate any intragroup property transactions appropriately. Property leased from one group entity to another, for instance, may be investment property in the standalone accounts of the lessor but is owner-occupied from the group’s perspective and reclassified on consolidation. These adjustments reinforce that investment property accounting connects to tax and group reporting, themes developed across our IFRS hub.

How does the model choice affect comparison between property companies?

The IAS 40 model choice makes comparing property companies surprisingly difficult. A company using the fair value model reports current property values on its balance sheet and routes value changes through profit, so its equity and earnings move with the property market. A company using the cost model shows depreciated historical cost on the balance sheet, with current fair value only in the notes, and far steadier reported earnings. Two otherwise identical property portfolios can therefore look very different in the headline numbers.

Analysts comparing property-holding entities must identify which model each uses and look to the fair value disclosures to put them on a common footing. Net asset value, a key metric for property investors, depends heavily on whether fair values are on the balance sheet or only disclosed. Understanding the model choice is the first step in any meaningful comparison, underscoring the broader point that IFRS measurement choices shape the story the accounts tell, as developed across our IFRS hub.

How do you classify mixed-use and partially let property?

Real portfolios rarely fit neatly into a single category. A building partly occupied by the owner and partly let to tenants raises the question of whether it is owner-occupied property under IAS 16, investment property under IAS 40, or split between the two. IAS 40 requires that if the portions could be sold or leased separately, they are accounted for separately; if not, the property is investment property only if an insignificant portion is owner-occupied.

Ancillary services provided to tenants add another dimension: where the services are a relatively insignificant component of the arrangement, the property remains investment property, but where the owner provides significant services — as in a hotel — the property is owner-occupied. These classification judgments must be documented and applied consistently, because they determine the measurement model and the profit-recognition pattern, a recurring theme in the asset standards covered across our IFRS hub.

How should property-holding groups govern valuation?

For groups where investment property is significant and the fair value model is used, valuation governance is central to credible reporting, because property valuations flow straight into profit. Sound practice is to engage qualified, independent valuers, define the valuation methodology and key assumptions, review valuations through a committee, and disclose the approach, inputs, and fair value hierarchy level transparently. This protects against subjective valuations distorting reported earnings.

Governance also means consistency across the portfolio and across periods, so that valuation movements reflect genuine market changes rather than shifting methods or assumptions. When property markets move sharply, this discipline is what allows users to trust that reported fair value gains and losses are real and evidenced. Robust valuation governance is the foundation of credible investment property reporting, in line with the controls culture emphasised throughout our IFRS hub.

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