Last year, I rolled my traditional IRA into my company's 401(k) in preparation for doing a backdoor Roth. I probably should have converted the Roth right away, but I didn't -- and then, to limit tax exposure on a work bonus, I opened a (traditional) SEP IRA. Does anyone know whether the existence of the SEP IRA prevents me from carrying out the backdoor Roth conversion? And if so, is it possible to roll a SEP into a 401(K) and THEN do it? Thanks for any expert advice....