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If you haven’t heard, there is a safe way to earn outsized returns on some of your money if you buy Series I savings bonds today. We reported on this bonanza in “ This Risk-Free Bond Now Pays 7.12%.” However, those who expect to get a tax refund this year have an opportunity to get in on an even bigger slice of the action. Generally, Americans are limited to buying $10,000 in electronic Series I…
