Most people are confused about the 50% and 100% May want to clarify. They need to understand and check their IRS Capital Gains table below. Plus it depends on your tax bracket where you fall.
here is a chart and online calculator that may help them.
Here is a simple capital gains calculator, to help you see what effects the current rates will have in your own life. (Before you use it for the first time, you may want to check out an example with numbers already filled in.)