An introduction to U.S. macroeconomic policy issues, such as how we use monetary and fiscal policies to promote economic growth, low unemployment, and low inflation.
Friday, June 6, 2008
Investing at 15% per year
Case C: Investing $1000 at 15% per year
Suppose you invest $1000 today at a 15% rate of return. Using the equation above, we can calculate the future value of this one time investment.
FV = ($1,000) (1.15)n where n = the number of years
After 10 years, this single $1,000 investment will be worth:
FV = ($1,000) (1.15)10 = $4,046
After 20 years, this single $1,000 investment will be worth:
FV = ($1,000) (1.15)20 = $16,367
After 30 years, this single $1,000 investment will be worth:
FV = ($1,000) (1.15)30 = $66,212
After 40 years, this single $1,000 investment will be worth:
FV = ($1,000) (1.15)40 = $267,864
After 50 years, this single $1,000 investment will be worth:
FV = ($1,000) (1.15)50 = $1,083,657
A single investment of $1,000 that earns a 15% rate of return for 40 years turns into over a quarter of a million dollars. If it is invested for 50 years, it becomes more than a million dollars!
At 15% money doubles every five years so a business that grows at 15% per year would double in size every five years.
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