Revenue secured 27 tax fraud convictions
A total of 27 criminal convictions in cases of serious tax evasion and fraud were secured by the Revenue Commissioners last year.
The tax authorities have warned business people with issues such as cash flow problems to engage with them as soon as possible.
There were also 2,063 summary convictions, or lesser charges, for the non-filing of tax returns and customs offences in 2015, according to new figures.
In total, the Revenue carried out more than 461,000 individual audits and compliance investigations throughout the year. This netted a total of €642.5m for the Exchequer.
In seizures, the tax authorities logged 1,377 kilograms of drugs with an estimated value of €23.1m; 68 million cigarettes and 2,364 kilograms of tobacco, both amounting to a value of €35.5m.
Chairman Niall Cody said more than €45.6bn was collected for the Exchequer from "compliant sources'' throughout the year.
Ninety nine percent of large businesses made payments on time, and the figure for medium-sized companies was 97pc.
"Core to Revenue's approach in 2016 will be the provision of quality services to help people be timely [and] compliant in parallel with the use of modern risk assessment and analytical techniques, to identify, confront and disrupt tax evasion, fraud and avoidance," Mr Cody said.
Revenue reported increases in each category of tax customer for the year with money raised from the PAYE sector up 4.1pc.
Self-assessment returns grew by the same percentage and corporation tax returns were up by 4.9pc.
Local property tax returns increased by 0.8pc. Revenue reported 1,257 court cases which involved penalties of €3.12m.
A total of 377 settlements worth almost €77m was also reported.