Borrowing costs on construction projects

Construction is funded with debt, and whether interest is capitalised or expensed changes reported profit significantly. The answer depends on who is building and why. This guide explains the qualifying asset test for contractors and developers, works through specific and general borrowings, and covers when capitalisation starts, pauses and stops.

By Mirza Fahad Baig, Chartered Accountant. Reviewed by Hamza Fida, Chartered Accountant. 3 minute read.

Short answer

Borrowing costs on construction projects are capitalised under IAS 23 only when they relate to a qualifying asset, one that takes a substantial period to get ready for its intended use or sale. A developer building apartments to sell on completion, or a company building its own plant, has a qualifying asset and capitalises interest on the borrowings that fund it. A contractor recognising revenue over time usually does not: its receivables, contract assets and over-time work in progress are not qualifying assets. In this guide's example, a developer capitalises 0.84 million of interest into its apartments.

At a glance

Standard
IAS 23 Borrowing Costs
Capitalise
Interest on qualifying assets
Developer selling at completion
Usually qualifying
Contractor, revenue over time
Usually not qualifying
Specific loans
Interest less investment income
General borrowings
Weighted average rate
Borrowing costs on construction projectsStandard: IAS 23 Borrowing Costs; Capitalise: Interest on qualifying assets; Developer selling at completion: Usually qualifying; Contractor, revenue over time: Usually not qualifying; Specific loans: Interest less investment income; General borrowings: Weighted average rate.KEY FACTS AT A GLANCEBorrowing costs on construction projectsStandardIAS 23 Borrowing CostsCapitaliseInterest on qualifyingassetsDeveloper selling at completionUsually qualifyingContractor, revenue over timeUsually not qualifyingSpecific loansInterest less investmentincomeGeneral borrowingsWeighted average rateTax BakersBorrowing costs on construction projectsStandard: IAS 23 Borrowing Costs; Capitalise: Interest on qualifying assets; Developer selling at completion: Usually qualifying; Contractor, revenue over time: Usually not qualifying; Specific loans: Interest less investment income; General borrowings: Weighted average rate.KEY FACTS AT A GLANCEBorrowing costs on constructionprojectsStandardIAS 23 Borrowing CostsCapitaliseInterest on qualifying assetsDeveloper selling at completionUsually qualifyingContractor, revenue over timeUsually not qualifyingSpecific loansInterest less investment incomeGeneral borrowingsWeighted average rateTax Bakers
Key facts at a glance, as set out in this guide.

Contractors vs developers: who capitalises borrowing costs on construction projects?

Who capitalises borrowing costs?Who capitalises borrowing costs?TOPICContractor, over timeDeveloper, at completionWhat it carriesContract assets, receivablesInventory of unitsRevenueOver timeAt completionQualifying assetUsually notUsually yesInterestExpensedCapitalised
The revenue pattern largely decides the answer.

A contractor building for a client recognises revenue over time, so what it carries are receivables and contract assets, plus any work in progress the client already controls. The IFRS Interpretations Committee concluded in 2019 that, for a developer recognising revenue over time, the receivable, the contract asset and even work in progress on unsold units are not qualifying assets, because the units are ready for sale in their current condition. Interest is expensed. A developer selling only on completion, by contrast, holds inventory that takes years to get ready for sale, a qualifying asset.

A developer's borrowing costs: an example

A developer builds an apartment block whose units will be sold on completion, so revenue is recognised at a point in time. It takes a specific construction loan of CU 10 million at 8%, and temporarily invests the undrawn funds, earning 0.2 million. It also funds 4 million of average spending in the year from its general borrowings, whose weighted average rate is 6%.

CU millionAmount
Interest on the specific loan: 10 x 8%0.80
Less income on temporarily invested funds(0.20)
From general borrowings: 4 x 6%0.24
Borrowing costs capitalised into inventory0.84

The 0.84 million becomes part of the cost of the apartments and reaches profit through cost of sales when they are sold. The amount capitalised from general borrowings cannot exceed the borrowing costs actually incurred in the period.

How is the general borrowings rate set?

As the weighted average of borrowing costs on all borrowings outstanding in the period, excluding borrowings made specifically for a qualifying asset until substantially all the work on that asset is complete. Since a 2019 amendment, a specific loan still outstanding after its asset is ready joins the general pool.

When does capitalisation start, pause and stop?

  • Start: when the developer incurs spending on the asset, incurs borrowing costs, and starts the activities to prepare it, which include planning and permits, not just physical construction.
  • Pause: during extended periods when active development is suspended, such as a project halted for a year by a funding shortfall, but not for normal delays such as weather.
  • Stop: when substantially all the activities needed to prepare the asset are complete, even if minor fitting-out continues.

What about assets built for the company's own use?

A contractor building its own head office, or a developer building investment property it will hold at cost, has a qualifying asset and capitalises borrowing costs. Investment property measured at fair value is outside the requirement, though capitalisation may still be applied as a policy. A new mine is another qualifying asset; see mine development costs.

What is disclosed about borrowing costs?

IAS 23 requires the amount of borrowing costs capitalised in the period and the capitalisation rate used for general borrowings. Developers often also show capitalised interest within inventory or investment property movements, so readers can see how much of the carrying amount is financing. In the cash flow statement, IAS 7 requires the total interest paid to be disclosed, whether it was expensed or capitalised, and classified consistently from period to period. Under the amendments made by IFRS 18, from 2027 most companies outside banking and investing will classify interest paid in financing activities; see IFRS 18 cash flow statement changes.

How does US GAAP differ?

ASC 835-20 has similar rules but does not reduce capitalised interest by income on temporarily invested funds, except in limited cases such as tax-exempt borrowings. See property development revenue, construction revenue over time and construction accounting.

Need help applying the standards?

Our Chartered Accountants help finance teams and students apply IFRS and US GAAP to real transactions.

Questions people ask

Are borrowing costs on construction projects capitalised?

Only when they relate to a qualifying asset, such as a developer's inventory sold on completion or a company's own building; contractors recognising revenue over time usually expense them.

Is a contract asset a qualifying asset under IAS 23?

No. The IFRS Interpretations Committee concluded in 2019 that receivables and contract assets are not qualifying assets.

How are borrowing costs on general borrowings capitalised?

By applying the weighted average rate on general borrowings to the spending on the qualifying asset, capped at the costs incurred.

When is capitalisation suspended?

During extended periods in which active development of the asset is suspended.

Sources

Every fee, date and rule on this page was taken from these official and primary sources.

  1. IFRS Foundation: IAS 23 Borrowing Costs
  2. IFRS Interpretations Committee: Over time transfer of constructed good, IAS 23 (March 2019)

Rules and fees change. If you are reading this long after October 7, 2026, confirm the figures with the source before you rely on them.

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This guide is general information. It is not tax or legal advice for your situation.