How much money do you need to retire?

According to MarketWatch, a 2012 study shows that by age 65, the average worker at a large employer must save 11 times her salary, after Social Security, to have enough money to sustain her through retirement. This amount allows for spending 85 percent of her pre-retirement salary annually during retirement.

Forbes notes that the actual amount an individual needs to retire depends on personal savings, retirement savings, employer retirement plans, Social Security, taxes, estimated expenses during retirement and health. Typically, if 4 to 4.5 percent of an individual's retirement savings is withdrawn each year, her retirement savings are unlikely to be depleted.