Saturday, July 10, 2010

Retirement Calculator

So how soon will you be able to retire? This little post calculates and graphs the amount of money you'll be able to save towards retirement. This gadget maps out the growth of your wealth based on monthly contributions from your salary, which increases every year with raises.

For example, Average Joe makes 50,000 a year. He expects an average yearly raise of 10% for the next 30 years. He currently has 5000 in saving, 6500 in his 401K and 6500 in a taxable stock account.

Each pay check he pays 8% into a 401k retirment which yeilds an average of 7.5% annually. He pays 2% into savings at 3.5% interest, and 5% into a taxable stock fund that yields roughly 11%.

I assert that in order to retire at a very young age, you'll have to have enough retirement money to earn as much as you withdraw from it. That can be calculated with the formulate: amount_required = desired_salary / (interest - inflation). In order to retire now with a before tax income of $30,000 you'll need to have $1,200,000 saved.

The Red graph represents the amount required to retire. It adjusts with inflation each year. The green represents what you've saved up to that ponit.

Of Coures, if you're only planning on needing that money for a period of time, and not replenish your money as quickly as you're taking from it, then you won't need quite so much. I made this to try and see what it would take to retire by the age of 35, and thus didn't want a time period. I'll probably add a period of time to the retirment section down the road.

Basic Salary Information:
Salary with Bonuses:
Yearly Raise %:%

Initial Money Saved:
Initial Savings:
Initial 401K:
Initial Taxable Stocks:

Investment Contributions:
Savings Account:%
Savings Rate:%
401K Rate:%
Taxable Stock:%
Taxable Stock Rate:%

Retirement Info
Desired yearly retirement salary:
Expected interest rate on all retirement funds:%
Expected inflation rate:%
Amount Required to sustain salary:

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