Taxes reach towers set, you can see through calendar of events is on the page "Results". It amounts to 33% of your profits (more precisely, it is 33% of RCAI, which is more or less your income less your expenditure). To limit the amount, it is interesting to do as the companies real investors to avoid paying too much tax.
To predict the amount of tax you will pay when future round of tax, an indicator on the finances, you can what would be the amount of taxes if you pay taxes up to current. It enables you to anticipate your future expenses.