I have OSX 10.11.6. I am reluctant to install Mac OSX 10.12 (Sierra) because of apps that I will lose. And so if I install OSX 10.12 will they require that I have High Sierra next year? So I have installed and am using TurboTax Online. Don't love it. It will not let me download my TurboTax data from 2017 Turbo Tax (on CD) to 2018 Turbo Tax online. Time consuming conundrum. :>(
