Revenue recognition
Revenue represents the value of goods and services supplied and is net of trade discounts and value added tax/sales tax. Other than in the case of construction contracts, revenue is recognised to the extent that revenue and related costs incurred or to be incurred are subject to reliable measurement, that it is probable that economic benefits will flow to the Group and that the significant risks and rewards of ownership have passed to the buyer, usually on delivery of the goods.
Construction contracts
The Group engages primarily in the performance of fixed price contracts, as opposed to cost plus contracts. Contract costs are recognised as incurred.
When the outcome of a contract can be estimated reliably the Group recognises revenue in accordance with the percentage-of-completion or measured works to date methods. The completion percentage is generally measured based on the proportion of contract costs incurred at the balance sheet date relative to the total estimated costs of the contract. When the outcome of a construction contract cannot be estimated reliably, contract revenue is recognised only to the extent of contract costs incurred where it is probable that these costs will be recoverable.
When it is probable that total contract costs will exceed total contract revenue, the expected loss is recognised immediately as an expense.
Revenue and/or costs in respect of variations or contracts claims and incentive payments, to the extent that they arise, are recognised when it is probable that the amount, which can be measured reliably, will be recovered from/paid to the customer.
If circumstances arise that may change the original estimates of revenues, costs or extent of progress towards completion, estimates are revised. These revisions may result in increases or decreases in revenue or costs and are reflected in income in the period in which the circumstances that give rise to the revision became known by management.