@jimreese44 wrote:
it's not difficult to use the current Mac development tools to use the same software code for the current OS to create a version for an earlier OS. Many developers do that routinely.
No. They cannot. The *current developer tools* only support 10.14 and later. Older developer tools can do that but they will not support the latest features and will not receive Apple support if there are problems. Also the software cannot be sold in the Apple store.
TurboTax choose to go with Apple support and the current tools.
**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.**
