A capital gain is triggered when you have sold an investment for a profit. For example, let's say you bought a stock for $10,000 and later on sold it for $20,000... this would trigger a $10,000 capital gain! But, depending on how long you've owned the investment, you may be able to significantly reduce how much you pay in taxes. Short vs Long-Term Capital Gains Short-term capital gains: When you sell an investment that you have owned for less than one year, for a profit. Short-term capital...