Earlier quoted context omitted.
Or you can open a Fidelity/Schwab account and buy U.S. Government T-Bills with no transaction costs or markup. 6-month T-Bills are currently yielding 2.54% and they're exempt from state taxes.
but how do those work. do you have to keep buying them every 6 months, or can you just leave it there while it keeps providing interest at that rate? and will those rates continue to go up? mysavingsdirect has for the last 2 or 3 years shown they're commited to staying at the highest rates.
To answer your first question--if you go with Fidelity, they offer an "auto roll" feature which can re-purchase new T-Bills (or any Treasury/CD) at auction, automatically, when existing issues mature. It's completely hands-off: https://www.fidelity.com/fixed-income-bonds/fixed-income-too...