15. EBITDA

EBITDA (earnings before interest, taxes, depreciation, amortization and impairment) presents the Group’s key measure of earnings performance. The level of EBITDA measures the Group’s ability to generate cash from recurring operations. The Group defines EBITDA as operating profit adjusted by depreciation and amortization and impairment allowance.

EBITDA is not an IFRS EU measure, and as such can be calculated differently by other entities.

for the year ended

31 December 2012 31 December 2011
Net profit for the period 598,298 160,190
Income tax 97,349 31,876
Gains and losses on investment activities (14,353) 15,006
Finance costs 110,782 355,392
Share of the profit of associate accounted for using the equity method (2,897) (2,164)
Depreciation, amortization and impairment* 243,066 174,880
EBITDA 1,032,245 735,180

* Includes impairment of property, plant and equipment and intangible assets.