This is a benefit that also causes a lot of confusion.
If you are aged 65 or over or your spouse or civil partner is aged 65 or over or if you are permanently incapacitated, you may not be liable for DIRT if you are exempt from income tax.
It is available for married couples once either spouse is aged 65 or over.
This is a benefit that is often overlooked as if you are due back the DIRT you must claim it back from the Revenue.
However this only applies provided you are not liable for income tax on the deposit interest in the normal way.
It is possible to get clearance from the Revenue so that the bank do not have to take the DIRT directly from your bank deposit interest. Ask your bank for the required forms.