5. Critical accounting estimates, assumptions and judgments

(a) Critical accounting estimates and assumptions

In preparing these financial statements, management is required to make estimates and assumptions that affect the reported amount of revenues, expenses, assets, liabilities and the disclosure of contingent liabilities. The resulting accounting estimates, which are based on management’s best judgment at the date of these financial statements, will seldom equal the subsequent actual amounts. The estimates and assumptions that have a significant risk of causing a material adjustment to the carrying amounts of assets and liabilities within the next financial year are summarised below. Revenue recognition is excluded from this summary on the grounds that the policy adopted in this area is sufficiently objective.

Tax (notes 16, 36 and 45(a))

The Group is subject to tax in numerous jurisdictions. The Group has a number of open tax returns with various tax authorities with whom it is in active dialogue. Liabilities relating to these open and judgmental matters are based on an assessment as to whether additional taxes will be due, after taking into account external advice where appropriate. Significant judgment is required in determining the related assets or provisions, as there are transactions in the ordinary course of business and calculations for which the ultimate tax determination is uncertain. The Group recognises liabilities based on estimates of whether additional tax will be due. Where the final tax outcome of these matters is different from the amounts that were initially recognised, the differences will affect the results for the year and the respective income tax and deferred tax assets or provisions in the year in which such determination is made. The Group recognises deferred tax assets based on forecasts of future profits against which those assets may be utilised.

Goodwill (note 20)

The Group tests goodwill for impairment annually, or more frequently if there is an indication that it may be impaired. The recoverable amount of each group of CGUs is generally determined on the basis of value-in-use calculations, which require the use of cash flow projections based on financial budgets, looking forward up to five years. Management determines budgeted profit margin based on past performance and its expectations for the market’s development. Cash flows are extrapolated using estimated growth rates beyond a five-year period. The growth rates used do not exceed the long-term average growth rate for the CGU’s markets. The discount rates used reflect the Group’s pre-tax weighted average cost of capital (WACC), as adjusted for region specific risks and other factors.

(b) Critical judgments

In applying the Group’s accounting policies, management has made judgments that have a significant effect on the amounts recognised in the Group financial statements and the reported amounts of assets, liabilities, income and expenses. Actual results may differ from these estimates. Estimates and underlying assumptions are reviewed on an ongoing basis. Revisions to estimates are recognised prospectively.

The most significant of these judgments are in respect of intangible assets and contingencies:

Intangible assets

Certain costs incurred in the developmental phase of an internal project, which include the development of databases, internal use software and internally generated software, are capitalised as intangible assets if a number of criteria are met. Management has made judgments and assumptions when assessing whether a project meets these criteria, and on measuring the costs and the economic life attributed to such projects.

On acquisition, specific intangible assets are identified and recognised separately from goodwill and then amortised over their estimated useful lives. These include items such as brand names and customer lists, to which value is first attributed at the time of acquisition. The capitalisation of these assets and the related amortisation charges are based on judgments about the value and economic life of such items.

The economic lives of intangible assets are estimated at between three and ten years for internal projects and between two and 20 years for acquisition intangibles. Amortisation methods, useful lives and residual values are reviewed at each reporting date and adjusted if appropriate.

Further details of the amounts of, and movements in, such assets are given in note 21.

Contingencies

In the case of pending and threatened litigation claims, management has formed a judgment as to the likelihood of ultimate liability. No liability has been recognised where the likelihood of any loss arising is possible rather than probable.