Bank of Ireland have offered us a 27-year mortgage, with the first three years fixed at 3%. I would prefer to have the certainty of a longer fixed period as my crèche fees are over €2000 per month for the next few years and I'll be watching every cent. Should I look for a 5 or 10-year fixed? I am expecting a mortgage broker to come back with an offer from Ulster Bank at the end of this week but until the details of that are known I'm trying to assess the BofI offer. My big fear with BofI is that after the fixed rate ends I'll end up with their comical variable rate. The BofI person keeps emphasising that we can switch after 3 years but I wonder is it that easy. All feedback will be welcome.