how much to save for retirement to get a comfortable lump sum ?

a good rule of the thumb is ten percent of your income

so , if you income is 50,000 dollars per year , you can start with 5,000 dollars in retirement per year … obviously , the more , the better

if you start with saving 5,000 dollars per year at the age of 22 and suppose the rate of return per year is 7 % , you will end up with 1.5 million dollars at the age of 67.

even if you can save 200 dollars per month , at the rate of return of 7 % , the amount will be around 730,000 dollars