My fiancée's professionally managed stock portfolio from Northwestern Mutual always seems to have substantial wash sales every tax season. I manage my own portfolio myself and usually only make less than a dozen trades a year. I haven't had a wash sale in over a decade. Back then I'd day trade and had no idea what I was doing. Is there a strategy I'm overlooking where having a wash sale can be beneficial? I would think a professional should be able to easily avoid the problem.