"I'm trying to find something that is written by the IRS or perhaps a prestigious law firm that talks about the proper treatment when a schedule C proprietor has negative self-employment income but has already funded his or her simple IRA contribution. Does anybody have such a resource? My assumption is the contributions are refunded, adjusted for gains. Because the deduction will not be taken in 2020, my assumption is that solely the investment earnings will be taxable in the year distributed. But I would still like to find something written on the topic in a formal way that I can provide to a CPA I work with."