Capital Gain

 Now lets go back to the situation where you had a house not being used and you rented it out. The total value of the house when you was renting was 10000$ and the monthly rent was 100$.After 3 years you planed to sell the property. Now you valued the house and found the value to be 15000$ .So now you have earned a profit of 5000 excluding inflation. That 5000 is called capital gain.