@TiffanyL
Hi, unfortunately updating to the latest version of TurboTax (Premier for Mac) did not solve this problem. It still occurs no matter what format I use for the account number. #AA#######, #AA######-#, #AA#####-##, and#AA-####### all give that same result.
Thank you for sharing the link with me. "M1 FINANCE" is in the list of 1099/1098 Partners, and we are past their "ready for import" date (both according to TurboTax and according to M1's support team).
I'm also confused about this: why is TurboTax's forms list only showing me a 1099-B worksheet, not the IRS's Form 1099-B or anything that looks like the Consolidated 1099 form from M1?
