My wife and are are both self-employed and we sold an investment property in 2018. What Turbo Tax software should we purchase to do our 2018 tax returns?

TurboTax self-employed is a good option for both you and your wife.  Use this link and answer a few questions to best determine the product that is right for you, https://turbotax.intuit.ca/personal-tax-software/online-tax-software.jsp.