Right now Citizen’s Bank is offering a 4.5% interest rate with a $1 minimum deposit. An independent source that scans nearly every available rate is a company called Bank Rate. They gather and organize rates on many investment products.
Bankrate: Guiding you through life's financial journey
Monthly I find the best available rate then, if necessary, move funds. Throughout the course of a year I earn about a week’s worth of “free” groceries for my effort. Is it worth it? Well, there aren’t as many activities that “cost” 15 minutes of computer time for such a handsome return.