You have $5,000 to invest today and you wish to double your money in the next 5 years. What rate of interest do you need to receive to make this happen? You would require an interest rate of 13.87% to double your money in 5 years. You would require an interest rate of 14.87% to double your money in 5 years. You would require an interest rate of 15.87% to double your money in 5 years. You would require an interest rate of 16.87% to double your money in 5 years.