As a Greek living in Greece, I can confirm that this is indeed at the heart of the matter.
Salaried personnel cannot evade taxes. These are paid directly by the employer to the tax authorities, along with the social security contributions. So an employee having a gross salary of € 2000 per month actually gets something like 1.500 net in his bank account. Provided that employee has no other source of income, he pays no additional taxes at the end of the year.
The problem is the self-employed such as doctors, lawyers, etc. It is common practice for a doctor to say at the end of the visit “80 € with a receipt, 60 € without a receipt”. The rebate offered by the doctor is greater than the tax rebate gained from declaring the doctor’s visit as an expense, so people usually pick the cheaper option as a, what they think, is a win win situation.
You find instances of doctors declaring an income of 7.000 € per year, when just the rent they pay for their office is twice that amount. But no state apparatus exists to catch these obvious type frauds automatically. If the databases exist, they don’t cross-check one with the other. And in the rare event of a tax auditor visiting that doctor, if for example the overdue taxes are € 30.000, the doctor simply bribes the tax auditor with half that amount, and the matter ends there. Tha tax collector has made an extra 15.000 off his books, the doctor has saved 15.000 in taxes, Win Win!
And that’s just the tip of the tip of the iceberg of tax evasion and fraud here.
Why are people so willing to accept and perpetuate this kind of behavior? Because the general consensus is that the Greek state steals from its citizens (through the corruption of the state officials), so the citizens have no qualms in stealing back from the State.
Therefore, when the Greek government needs to show measures that increase tax collection and reduce expenses, they can only apply those measures to the salaried tax-base, which is shrinking all the time due to the rising unemployment, and to pensioners who get paid by social security.
Do I blame the troika (that’s what we call our IMF, EU, ECB lenders here) for not taking into account increased tax collection in their figures? No. In their place, I wouldn’t do so either.
Am I happy that my disposable income is shrinking all the time from increased direct and indirect taxation? No.
But until the mentality of Greeks in general changes, these problems are not going to go away. And that’s not going to happen any time soon.