What is compound interest?

compound interest is interest on interest and again interest on amount together with principle plus interst
When. Interest compiles eg you have 10% interst on 100 , so after a year you have 110 10% again 11 pounds so you have 121 next year 10% you have 133.10 and so on
compound interest is interest that is added each year from you profits that year, an example to make this easier - say you had 200 pounds in your bank and the company was giving you ten percent per annum. after your first year you will have made 220 pounds as you take ten percent (£20) from your balance and add it on. The next year say you have the same £220 another ten percent will be added- ten percent of 220 not 200.