According to figures just released to The Currency by Revenue, 6,200 tax returns were filed in 2017 by non-resident taxpayers holding an Irish domicile. An Irish tax domicile is a kind-of shorthand for ‘Irishness’ – a person born in Ireland to Irish parents, for example, has an Irish tax domicile and it’s quite hard to change it later in life. On the other hand, 7,100 non-domiciled persons filed an Irish tax return in the same year. The numbers seem quite even-handed: every Irish person primarily tax resident abroad with a source of income here and who makes a tax return…