11. Income tax expense

In CHF’000 Note 2007 2006
Current income tax -18 863 -15 536
Deferred income tax 17 6 158 4 872
Other taxes -2 233 -1 102
-14 938 -11 766

Other taxes include non reimbursable withholding taxes.

The tax on the Group’s profit before tax differs from the theoretical amount that would arise using the weighted average tax rate applicable to profits of the consolidated companies as follows:

In CHF’000 2007 2006
Profit before taxes 82 386 150 296
Tax calculated at domestic tax rates applicable to profits in the respective countries -11 343 -22 077
Income not subject to income tax 4 249 8 891
Utilization of previously unrecognized tax losses 298 3 109
Write off and tax losses not recognized as deferred taxes -6 085 -1 217
Expenses not deductible for tax purposes -404 -395
Prior year income taxes 75 -521
Non-reimbursable withholding tax -2 233 -1 102
Other 505 1 546
Tax expense -14 938 -11 766

Profit before tax includes the full profit before tax of a joint venture company whose taxes are paid by its shareholder since it is a tax transparent company. As a result 100% of the profit before taxes of this company is included although the Group only recognizes 50% of the taxes on this profit due to the special tax arrangements. The tax impact which is included in other amounts to kCHF 0 (2006: 1 138).

The weighted average applicable tax rate was 13.77% (2006: 14.69%). The decrease in tax rate is mainly attributable to change in the profitability mix of the subsidiaries (different countries, different tax regimes).