Financial report / Explanations and comments on the Balance Sheet / 3. Significant estimates
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Significant estimates

The key assumptions concerning the future, and other key sources of estimation uncertainties at the reporting date, that have a significant risk of causing a material adjustment to the carrying amounts of assets and liabilities within the next financial year, are discussed below.

Provisions — Provisions are made when any probable and quantifiable risk of loss attributable to disputes is judged to exist.

Useful lives of property, plant and equipment — In reporting property, plant and equipment and intangible assets an assessment of the useful economic life is made at least once a year.

Frequent flyer programme — The Group has estimated the liability pertaining to air miles earned by Aeroflot Bonus programme (Note 2) members. The estimate has been made based on the statistical information available to the Group and reflects the expected air mile utilisation pattern after the reporting date multiplied by their assessed fair value.

Compliance with tax legislation — Compliance with tax legislation, particularly in the Russian Federation, is subject to a significant degree of interpretation and can be routinely challenged by the tax authorities. The management records a provision in respect of its best estimate of likely additional tax payments and related penalties which may be payable if the Group’s tax compliance is challenged by the relevant tax authorities.

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