Two cases resulted in payments of more than €1 million
Tax settlements worth more than €16 million were made with Revenue in the last three months of 2015.
A list of more than 100 defaulters has been published today.
Two of the cases resulted in payments of more than €1 million being made to the taxman.
Four settlements exceeded half a million euro, and 46 of them were for amounts of more than €100,000.
The figures released today include tax, interest and penalties.
Settlements are calculated under two categories of default - deliberate behaviour or careless behaviour (which "involves lack of due care").
However, Revenue says that "penalties are not charged where a tax default was not deliberate, or was not attributable in any way to the failure by a taxpayer to take reasonable care to comply with his or her tax obligations".