Estimates for Income Tax and Corporation Tax

Calculating the estimate figure

The estimate figure amount is the higher of:

  • a default amount of €1,000
  • the average of the tax liability in your last two filed returns.

If no returns were filed by you for prior periods, the estimate figure is €1,000.

  • Example

    John failed to file his tax return for 2021 and Revenue issued a notice of estimate for 2021.

    John filed his 2019 return: €15,000 liability.

    John filed his 2020 return: €10,000 liability.

    The average of his two returns: (€15,000 + €10,000) ÷ 2 = €12,500.

    €12,500 is higher than the default €1,000, so the estimate for 2021 is €12,500.

Next: Enforcement and displacement of Revenue estimates

Published: 24 March 2026 Print this page

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