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DIRT Savings Interest Tax Calculator Ireland

See savings interest after Deposit Interest Retention Tax. This free dirt savings interest tax calculator ireland shows the calculation and its assumptions so you can compare your own figures.

How the deposit interest & dirt calculation works

Net interest = gross interest × (1 − DIRT rate).

DIRT means Deposit Interest Retention Tax. The published standard rate is 33%. Foreign interest, PRSI liability and exemption conditions need separate checks.

Applicable rules year: 2026. Sources checked 2026-10-06: Revenue standard DIRT rate 33%; exemption, foreign-interest filing and possible PRSI treatment require confirmation. Published rules are used, not proposed changes.

Using this calculator

  1. Enter your own figures in the labelled inputs. Keep the currencies, units and time periods consistent.
  2. Choose any applicable rate profile, pattern or assumption shown for this tool. Open additional inputs when relevant.
  3. Review net interest and deposit interest retention tax, then read the stated assumptions and eligibility conditions before using the result.

Official sources and further information

Worked example

This is a static example using illustrative inputs, not facts about you or today’s date. The displayed eligibility selections and assumptions apply only to this example.

See example inputs
Gross deposit interest (€)
1000
Confirmed exemption applies
No
Net Interest
€670.00
Deposit Interest Retention Tax
€330.00
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