<prompt> Human: Need advice on where my mom should invest her inheritance such that she can be assured that no principal is lost while she draws a nice monthly income. We were thinking about buying condos for cash, but this seems to be a lot of trouble for someone her age...am wondering if there are any financial vehicles out there since this is a large sum of money.  <response>: We were thinking about buying condos for cash, but this seems to be a lot of trouble for someone her age.Huh? No. Your mother sounds like a good candidate for a single premium annuity - she pays a lump sum for a stream of payments over the annuitants lifetime. 