There are a handful of protocols in DeFi today that offer fixed income. They do so primarily in one of two ways. Yield-splitting protocols allow users to isolate the yield generated by a variable rate opportunity into a separate token from their initial deposit. This allows users to earn fixed income either by immediately selling the "yield token" or by purchasing "principal tokens" in the secondary market at a discount to their face value and then redeeming them upon maturity. Fixed-rate lending protocols offer users the ability to lend their assets to a fixed rate loan issuing pool. In either case, FIAT DAO is able to accept such assets with relative certainty around their future value.