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- Feb 8, 2017
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I am presently using an iMac retina 4K 21.5 inch late 2015 model and have been advised that I need to upgrade if I want to continue using TurboTax for 2022. I personally do not like upgrades but I have no choice. My question is should I upgrade to Big Sur or higher and what are the ramifications of doing this. Would appreciate any assistance in this matter.