Determining the safest place to allocate a $100,000 lump sum depends on your required time horizon, liquidity needs, and risk tolerance. For capital preservation with zero market risk, government-backed savings accounts, term deposits, or short-term treasury bills offer secure, guaranteed fixed returns. If your goal is long-term wealth growth while managing risk, a diversified portfolio consisting of low-cost index exchange-traded funds (ETFs) tracking global and domestic equity markets is widely recommended by financial professionals.