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If you earn interest on accounts outside Ireland, the reporting route can differ from Irish deposit accounts where DIRT is often withheld by the bank. This guide explains the key concepts and links to the official Revenue pages for the authoritative rules.
For many Irish deposit accounts, DIRT is commonly withheld at source when interest is credited. For foreign accounts, the Irish tax outcome can depend on where the account is held, whether any withholding happened abroad, and your residence position.
The safest approach is to treat the DIRT calculator as a benchmark for “what happens if interest is taxed at DIRT”, then confirm the authoritative treatment using the Revenue guidance for foreign deposit income.