Where the DIRT regime applies, there are no exemptions from DIRT for individuals resident in the State. A review was previously carried out by the Revenue Commissioners to see if it was possible to introduce some form of exemption in certain cases that arose. However, no practicable solution was found. The difficulties mainly arise from the arrangements that would be necesary to police an exemption system. However, under certain circumstances DIRT may be refunded i.e. people aged 65 years or over (or people whose spouses are over 65 years of age), and individuals who are unable to look after themselves due to permanent ill health. Refunds apply to the extent that the individuals would not otherwise be liable to tax on the interest income.