It is not uncommon for investment products to be arranged so that a tax benefit increases the financial returns available.  Pension fund investments and Employment and Investment Incentive scheme (EIIS) products are prime – and very acceptable – examples. But now and again things can go wrong on the tax front with negative consequences for the investor.  One such example was covered on this site last week, and made its way to Tax Appeals Commission case. the investment went something like this :- In 2005 an investor (the taxpayer) invested EUR 500,000 for shares in a property company for an…