The most recent auction of 4 week T-bills was 5.89% on 5/9/23.
As of yesterday I own 26 week T-bills. 17 week t-bills and now 4 week t-bills. All of that money came out of my bank account where I was earning virtually nothing.
if you live in high tax state like california or new york, treasuries are exempt from state and local taxes and there are calculators available on line to compute the after tax return depending onyour state, income etc. they get me about .5 % more net than a cd after tax.