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jerZ07002
Supreme tranceaddict
Registered: Dec 2006
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| quote: | Originally posted by George Smiley
Heh, piece of piss innit?! |
absolutely.
if guerra's 35 million number is correct, i made a pretty accurate guess; that's a little more than 11 percent of the population. That number means that most people need to make around 125K to save that much. score!
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May-29-2008 22:46
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jerZ07002
Supreme tranceaddict
Registered: Dec 2006
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| quote: | Originally posted by guerra-monstru
Not true |
You clearly don't know how to do Future value calculations if you think my number is wrong. Plus, you gave no interest rate. how can you tell how much 1080 will grow without knowing the interest.
EDIT: actually, you're right, i was wrong, you need to save more than 9000 a year, i was doing monthly compounding at 4.5%. If the annual rate of return is only 4.5%, then you need to save more - $9300.
enter this into excel, =pmt(0.045, 40, 0, 1000000). That's how you find the required payments to accumulate 1 million.
you could also see the how you accumulate over a period of time by doing this: =fv(interest rate, term, payments each year, 0)
Last edited by jerZ07002 on May-29-2008 at 22:56
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May-29-2008 22:48
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jerZ07002
Supreme tranceaddict
Registered: Dec 2006
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| quote: | Originally posted by guerra-monstru
Ok. I will answer here for you. Earning enough money is not the problem. About 80 to 87% of Americans have the money to invest in. The problem is that most do not begin early. So if you want to start late, at the time most Americans begin to save money, 40, you would need to put 2 750 a month to earn that same million. But if you started early at 29 than its just 90 dollars a month.
Watch 1080 * 38 = 41040 for a million dollars
2750 * 12 * 27= 891000 for the same million as above^ |
what? not only does that not make sense, but it also doesn't add to a million dollars.
what about compounding interest? that's what causes the wealth to grow.
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May-29-2008 22:51
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jerZ07002
Supreme tranceaddict
Registered: Dec 2006
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| quote: | Originally posted by George Smiley
Ok, I'm no economist or financial expert, so you're gonna have to explain it in simpler terms than that cos all I see is you get to $41,040 and somehow you've managed to add interest on that to come to $1m, that right?
I don't understand how you get to $1m! |
my revised number of 9300+ over 40 years at 4.5% is 100% accurate (my first one was inaccurate because i used monthly compounding instead of annual RR). disregard anything else, i am pretty good with financial calculations.
Last edited by jerZ07002 on May-29-2008 at 23:07
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May-29-2008 23:02
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Shakka
Supreme tranceaddict

Registered: Feb 2003
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| quote: | Originally posted by George Smiley
Erm no funnily enough!
Can you give me the wage that you'd need to be earning to be able to save $1m by the time you retire? Or tell me how much a person would need to save each month and add their other outgoings on top of that? |
sorry, was away. It's not so much the wage that matters, it's how much the person saves and invests. It depends on their expenses. He or she may choose to live modestly now in order to secure a more comfortable retirement. A person could rent a shabby apartment for $500/month or choose to have a nicer house and pay a $2500 mortgage. There's a $2000/month gap right there. It all depends on savings and how you structure your lifestyle. Too many people want too much too early and they end up hurting themselves down the road because of their own poor planning. Then they expect the government to simply pick up the tab for their own lack of prudence and frugality. The problem is the "keeping up with the Jones" mindset, not necessarily a pure maldistribution of wealth, as you believe.
1) 4.5% is a rather low rate of interest to use as a long term figure considering that the risk free rate of return on a 10 year U.S. treasury is just over 4% as of today. The long term average return of the S&P 500 is over 10%, though I think that is also a bit aggressive as it captured the anomalous period of astronomic growth in the 1990's. I'd say 7-8% is probably a fair long-term assumption to use.
2) Jerz07002 has correctly pointed out that it is the compounding effect of interest that truly creates wealth (George, for the non-financially schooled, this means that if I earn a 5% rate of return and save $100 at the end of 1 year, I have $105 ($100 plus my 5% return). Beginning in year 2 I am earning the same 5% rate of return, however this time it is based on a $105 base, so at the end of year 2, I have earned more than $5 in interest. It doesn't seem like much, but after a period of years, the earnings accrue substantially. The earlier you start, the more compounding will work its magic).
There is a general rule of thumb called the rule of 72 in economics. It goes like this: Take the prevailing rate of interest and divide it into 72. The resulting number is the approximate number of years it takes your initial investment to double. So if the interest rate is 7%, it would take roughly 10 years to turn my $100 into $200 without any additional contributions.
Anyway, to use the Excel formula for present value, you'd want to calculate an ending value of $1,000,000 using an interest rate of 7% per year. The other variables are the number of years of savings involved, and the amount of each contribution. The problem with just using the basic present value formula P=Ve^rt is that it does not account for additional monthly contributions, rather it just tells you a future value of your present savings based on a given rate of return.
Since contributions are monthly and interest payments are generally credited monthly, we need to also use a monthly interest rate, so 8%/12 = 0.66667%/month. For a 30 year period (30x12 = 360 months) you'd need to save $670/month. Maybe not an easy feat for many, but with financial discipline it is also not out of reach for a great many.
By the way, here's a link to the financial calculator I am using:
http://www.dinkytown.net/java/FinCalc3.html
Now let's assume you were smart and started saving when you were 20 and you retire at 65...that's 45 years of saving (540 months). Now in order to have $1M when you retire you would only need to contribute $190/month.
Now simply for argument's sake, let's say some wise industrious person started saving $300/month when they were 20 and didn't retire until they were 70. 50 years of savings...720 months. At an 8% constant return, that person would have over $5M upon retirement! Fuck me, right?
What if that person was able to eek out a 10% return (0.833333%/month)? Fuck-n-a, they'd have over $14M when they hit 70!
Get it now? Start early, pay yourself first. People don't seem to grasp the time value of money concept, but it is no excuse for bigger government and more welfare/entitlement programs.
For argument's sake, you could also say that as a person gets older, his/her income likely goes up and his/her monthly contributions might also rise (though I have a daughter and my savings have clearly gone down!)
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May-29-2008 23:39
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