Don't have a clue about Estonia, just found on wikipedia
Estonia: Corporations/legal persons income tax.
Legal persons income tax rate is 21% in the year 2012. However, the system of corporate earnings taxation currently in force in Estonia is a unique system, which shifts the moment of corporate taxation from the moment of earning the profits to the moment of their distribution. In other words, earning profits in itself does not bring income tax liability, which arises only when earned profit is distributed to shareholders. In case profit distributed to shareholders originates from dividends received from subsidiary company or from permanent establishment corporation has in other country, then profit distribution is tax exempt. Estonia does not have withholding tax on dividends paid.
AFAIK lower corp. taxes in EU are
Bulgaria 10%
Cyprus 10% (will be 12.5 soon)
Ireland 12.5%
A ruling by Estonian tax authorities TODAY, so a hot new info:
- Bitcoins are not subject to VAT in Estonia
As you combine this with the little-known secret:
- Estonian corporate tax is 0%, the lowest in EU
Now this is interesting, could you possibly link material to read up on the actual ruling ?