I am going to key in on the word SAFE in your question, and I am going to offer something completely different. If your dad has been offered the option of annuity payments instead of lump sum (which is common in big lottery wins), consider taking that option. A good CPA or CFP can help you compute what rate of return you would need on the lump sum in order to match the annuity option. If your dad is very conservative, this may be the best option. In any case, I would strongly advise discussing with a Certified Financial Planner, but make sure the CFP you choose is at least open to considering the idea of accepting the state’s annuity payments offer.