I inherited money from my father. How do I avoid a ‘tax bomb’ with RMDs?

Dear Dan,

I’m one of the many baby boomers who are inheriting some accounts from our parents after they pass. I inherited a taxable account, so the step-up in cost basis wiped out the tax liability back to the date of my father’s passing a year ago. 

My wife and I are 58, and recently retired, so I’m also doing Roth conversions of about $100​,000 a…