captjns, if a captain has been at Ryanair on a Brookfield contract for 5 years earning 100,000 Euros per annum and he gets caught by the taxman he will owe in excess of 30,000 Euros per year in tax. 150,000 Euro tax bill, nobody has that kind of money therefore 'probably' / 'possibly' a term in prison would seem likely.
Just my take on it, possibly wrong.