HSBC sent around a big cheery email to let everyone know that they’ve extended the promotional 3.5% rate on their online savings account until September 15th.

The rate was set to expire in August. That’s in the upper limit of what’s being offered out there. Via Bankrate, the only one that I can find with no fees and for balances under $10,000 is “Flagstar Bank,” which, while FDIC-insured, I’ve never heard of and it has a very simple website. Then there’s FNBO, which has a lower interest rate, but it’s compounded daily instead of HSBC’s monthly, ultimately giving a higher yield. (hat to commenter bonzombiekitty).

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