Thanks, dmertz. I could not find any official way (i.e., an IRS or brokerage form) to allocate the contributions to tax years 2019 v 2020. My brokerage firm has a form for removal of excess contributions, but that does not seem to apply given our shared understanding that I can allocate part of my July 2020 funding to tax year 2019 and part to tax year 2020. For "personal tax records", I only have my own spreadsheets and word documents that I use to compile information and identify/resolve questions and keep notes for myself. Is that sufficient, or is there a more formal/official way to do this allocation?
