The number of homes liable for the vacant homes tax was 2,377 last year - a drop of 4,206 on 2023.
Revenue Commissioners estimates these tax payers are liable for €1.6 million.
The tax is five times the rate of the Local Property Tax and is charged on homes which are occupied for less than 30 days over a 12-month period.
Headline results from the Revenue Commissioners also show there were 26,560 homes newly liable for the local property tax which are liable to pay €7m.
Separately, the Revenue figures show there were 256 tax avoidance cases settled last year which yielded €46m.
Revenue is currently challenging 228 tax avoidance cases related to 33 transactions with 261 appeals.
Revenue Commissioner Ruth Kennedy said the organisation uses its "vast data holdings" and statutory powers to "identify and challenge schemes and transactions that create an unfair tax advantage".
There were 21,246 taxpayers with phased payment arrangements at the end of last year and just of half of those were related to warehoused debt.
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Debt warehousing means that businesses were able to put off paying tax debts during the Covid pandemic.
The total amount outstanding at the end of 2024 was €2.9 billion of which €1.1 billion related to debt warehousing.
There were 57,407 cases of enforcement actions involving a solicitor or sheriff and the yield from enforcement actions was €229m.
The number of serious evasion and fraud convictions was 20 last year and there were 186 summary convictions which resulted in fines of €446,269.
In total drugs worth €214.5m seized last year, the figures from Revenue reveal.
This was made up of €128.5m of cannabis, €42.3m of cocaine and heroin, and €43.6m of amphetamines, ecstasy and other drugs.
There were also €128m worth of tobacco seizures, while 157,000 litres of fuel was seized.
