@dmr0 wrote:
You wrote "Apple officially drops support for 10.13 in Jan 2021, since TurboTax 2020 is for the 2021 filing season, 10.13 will not be supported during the life of TurboTax 2020." As a minor nitpick, I thought that Intuit supports download customers re-downloading TurboTax for up to three years, so that they can produce and file amended returns. Apple supports the current and two previous versions of macOS (and since Apple releases a new version each year, that turns out to mean supporting a macOS version for three years). So it would appear that for filing amended returns, if you used the oldest supported version of macOS when preparing your return and three years later your prepared an amended return with the same version of TurboTax running on the same version of macOS, Intuit would be supporting running TurboTax on a macOS version three years older than the oldest version of macOS supported by Apple. (But of course, that version of macOS was supported by Apple at the time that version of TurboTax was released.)
The "amend" feature is a part of the original TurboTax software. It is not new software at the time you choose to amend. However, if you run the software at a later time on a OS that did not exist at the time that the TurboTax product was released and it is not comparable with the new OS then TurboTax probably will not support it not support it. There should be no problems amending using the same OS that you originally filed with since nothing has changed.
I have never seen problems with the amend feature itself not running.
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**
