Your deceased husband left you a 401K which you converted to IRA ten years ago In 2007 you cashed it in How do you report on taxes?

You will receive a 1099-R from the trustee showing the distribution and any taxes withheld. You will report it as pension income on your 1040, and will owe income tax on the entire amount. If the distribution is deemed premature, you will also pay a 10% penalty tax.