With the new tax laws, taking effect in 2018, using 2017 software to do a test 2018 return is not as accurate as it used to be. However, for purposes of capital gain tax, it will be closer than other uses.
You could also try this tool: Try this tool <a rel="nofollow" target="_blank" href="
https://turbotax.intuit.com/tax-tools/calculators/taxcaster/?s=1">https://turbotax.intuit.com/tax-to...>. Enter your regular income first to see the regular tax. Then add the capital gain to see the effect.
