I'm trying to advise a an aunt & uncle in relation to deposits but have come accross something I'm unsure of. They are over 65, have a lump sum to invest, and would qualify for DIRT exemption in the normal course. They want to put the money into a 4 year fixed account whereby the interest is paid out in year 4. Could that interest put them into the tax net even though it has been accrued over the 4 years? The Revenue's wording is interest paid or credited - arguably the interest is only credited in year 4 and hence subject to the DIRT rate at the time. So if the interest paid pushes them over the limit in that year they are into the tax net. Can anyone point to a definitve answer on this?