Revenue collected more than 1.5m in additional tax and duties last year following investigations triggered by whistleblower reports, according to its latest update on protected disclosures.
Compliance interventions were staged after information was provided through Revenue’s protected disclosures channels. These reports are made by workers who become aware of potential wrongdoing related to tax, duty or customs through their jobs.
In total, Revenue received 1,743 reports through its external reporting channels in 2025, up from 930 the previous year. However, only a portion of these met the criteria to be treated as protected disclosures. Some 241 were deemed to qualify, up from 171 in 2024.
The remaining reports largely related to suspected tax evasion that did not arise in a work-related context. These cases were referred to the relevant divisions within Revenue for further action.
Revenue said all disclosures that meet the criteria are subject to a risk assessment, with follow-up action taken where a business or individual is suspected of failing to meet their tax obligations.
Alongside the 1.5m collected, outcomes included new tax registrations, the withdrawal or cessation of tax registrations, debt collection through phased payment arrangements and the initiation of summary prosecutions in relation to excise offences.
There has been a further increase in the use of Revenue’s online reporting system. More than 35pc of all external reports in 2025 were submitted through...
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