I think the taxation system can be tackled but not quickly. As ever, it is the middle income earners who will be hit - those in open regular employment whose income can be easily identified and taxed. That will then logically fan out and gradually more people will be caught up and fairly taxed. As you say Maria it means this won't be a fair spread of people paying tax though.
In the UK people may try and fiddle, but they have to try quite hard, and we all know that the taxman is something to be feared - in Greece the taxman is someone who is easily bought off.
However, the Greek government has been asking for help in setting up such a system for years from the European partners and no help has been offered - they are being mocked for a ridiculous state of affairs but not helped to try and put it right.
But then the massive factor they also need to sort out is that taxation is not just about income, what about capital gains? ...... but there is no land registry, so how do you work out who is making these gains .... and why is thatof course? because half of the land in Greece is owned by the church, and which government is going to be strong enough to start taxing the church?
For these reasons, I am also not very optimistic that we will see much progress in the near future. The whole culture needs to be changed and that is very hard.
(A little example which sums things up nicely: When my grandfather died 10 years ago, my father and aunts sorted out his estate. They were hit with a demand for inheritance tax 9.5 years later, and then eventually agreed to pay 10% of the original demand, after negotiating with the local tax office. Says it all really. Oh, and many friends of my dad's still take the mickey out of him for paying anything at all - they say he is a complete chump for not ignoring the tax demand completely. It's unbelievable.)