See all of the Money Blog entries in this series.

THE SCENARIO

John and Jane Smith want to retire in 12 years, they currently have $250,000, and they need $875,000 to retire.


THE QUESTION 

Okay, so now that we know how much the Smiths need, let’s figure out how they can get there.  They currently have $250,000, and need $875,000 in 12 years.  

A) What return do they need over those 12 years if they don’t put any new money into investing in the meantime?

B) What return do they need if they invest an additional $250 every month until retirement


THE SOLUTION

A) What return do they need over those 12 years if they don’t put any new money into investing in the meantime?

N = 12 x 12 = 144

PV = -$250,000

PMT = $0

FV = $875,000

I/YR = 10.49%

If they can earn 10.49% on their $250,000, consistently for 12 years, reinvesting all returns, they can end up with $875,000.

B) What return do they need if they invest an additional $250 every month until retirement

N = 144

PV = -$250,000

PMT = -$250

FV = $875,000

I/YR = 9.8%

So with a modest additional investment per month, they only need an 9.8% return rather than 10.5%.  

Read the next part in this series!

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Money Blog – What yield do I need? # 2
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