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Updated Dec 2025

Second Income Tax Ireland: Complete Guide 2025

How second jobs and side income are taxed in Ireland. Understand your obligations.

14 November 2025
1 min read

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Second income in Ireland is taxed at your marginal rate. Whether from a second job, side hustle, or investments, you need to understand your obligations.

💼 Second Income Tax

  • Tax rate: Usually 40% (marginal)
  • Tax credits: Spread across jobs
  • Side hustles: May be self-employment
  • Reporting: Form 11 or 12

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