As Revenue rely on investment undertakings to give details of values of investments held by certain unit holders, why then are individuals required to make a declaration of their earnings? Investors supply their tax ID to Financial Institutions, presumably to facilitate the Revenue to collect the DIRT on income? How difficult can it be for the Revenue to collect DIRT deducted at source from other EU states? I understand, where WHT is not deducted, that the investor/taxpayer may need to declare it to the Revenue and pay the DIRT. Even then, isn’t it the responsibility of the Financial Institutions to report all interest earned on incomes, regardless of whether DIRT was, or wasn’t deducted?