Offer your thoughts or opinion on the input financial query or topic using your financial background.

what would you do with $100K saving? 
4) Beef up my emergency fund, make sure my 401(k) or IRA was fully funded, put the rest into investments. See many past answers. A house you are living in is not an investment. It is a purchase, just as rental is a purchase. Buying a house to rent out is starting a business. If you want to spend the ongoing time and effort and cash running a business, and if you can buy at the right time in the right place for the righr price, this can be a reasonable investment. If you aren't willing to suffer the pains of being a landlord, it's less attractive; you can hire someone to manage it for you but that cuts the income significantly. Starting a business: Remember that many, perhaps most, small businesses fail. If you really want to run a business it can be a good investment, again assuming you can buy at the right time/price/place and are willing and able to invest the time and effort and money to support the business.  Nothing produces quick return with low risk.