I'd recommend looking at FRNs which are currently ~0.2% over FedFunds (eg 4.8-5%). You can buy them through Treasury Direct, a brokerage account or more liquid

I'd recommend looking at FRNs which are currently ~0.2% over FedFunds (eg 4.8-5%). You can buy them through Treasury Direct, a brokerage account or more liquid (if you trust them) ETFs like USFR, and they are comparable or better than short CD ladders with better liquidity. I'm kinda surprised medium sized companies were keeping more than 1 month (or pay period) of money sitting in a bank account. https://www.google.com/search?q=usfr+etf https://www.google.com/search?q=usfr+etf