Revenue has re-couped more than €17m from tax defaulters.
A new list shows 83 significant settlements over the three-month period to the end of June.
The biggest single amount in this defaulters list was paid by Wordperfect Translations limited.
The company, based in Blanchardstown in Dublin, reached a settlement for €1.67m for undeclaration of PAYE and PRSI following an audit.
It is one of three cases on the list where the amount exceeds a million euro.
A further seven exceeded €500,000, while 36 involved sums of more than €100,000.
Many of the settlements relate to Revenue's investigations into bogus non-resident accounts, offshore funds and single premium insurance products.
Others targeted during the same three-month period included those who laundered fuel and smuggled tobacco.
There is also one case of someone being jailed for four months for the illegal sale of cigarettes.