this update requires mac os version 10.12

“Is it safe to upgrade yet?” That’s the question I’ve been asked repeatedly since Apple first released macOS 11 Big Sur in November 2020. Is It Safe to Upgrade to macOS 11 Big Sur?

#1604: Universal Control how-to, show proxy icons in Monterey, Eat Your Books cookbook index.

#1605: OS updates with security and bug fixes, April Fools article retrospective, Audio Hijack 4, 5G home Internet.

#1606: Apple's self-sabotaging App Store policies, edit Slack messages easily, WWDC 2022 dates.

#1607: TidBITS 32nd anniversary, moving from 1Password to KeePass, pasting plain text, Mail fixes anchor links, RIP Eolake.

#1608: How to test Internet responsiveness, Wordle takeoffs, understand cryptocurrency.

So, I would encourage anyone currently using Mac OS X 10.9 or later to simply try TurboTax 2018 as is, and I’ll bet that (aside from getting the alert above), it will work just What am I trying to prove? That you can't believe everything you read, that your rigid belief in the way software works is flawed (are you on the TurboTax software development team? Have you actually tested 2018 on an older Mac OS like I just did?), and that fact-based answers to questions like the one that posted are the only reason to post a comment here. Thus, TurboTax 2018 runs under 10.11, and does NOT require 10.12, despite that page that posted, and based on my earlier evidence, it probably works under 10.9 as well. A “No Tax Form Updates at This Time” alert also appeared. And then I landed in the main TurboTax 2018 window, with an “Untitled” tax return ready to start (“Hi, Welcome to TurboTax” and the “Begin” button ready to be clicked). I clicked to permit an update, and watched the “Updating TurboTax 2018” window download the 279.4mb update and then relaunch. I clicked to agree to the license terms.

Please get macOS Sierra (version 10.12) or above when you can.” That phrasing is a little self-contradictory, but it didn't bother me. However, you'll need to update the operating system that's currently on your Mac for TurboTax 2018.

On installation and launch, it displays this alert: “You can continue to use TurboTax on your Mac for this year.

TurboTax 2018 does NOT require OS X 10.12, and I just proved it: While I don’t have a 10.9 Mac lying around, I do have the ability to boot into 10.11.6, after which I was EASILY able to install, update, and run TurboTax 2018 from the same DVD that I just received:

This update requires mac os version 10.12