phenobarbiedoll said:
I'm still confused.
Let's say you take a long time to pay your loan. According to the arguments presented here, let's say your school loans are at a 2% interest rate and your savings account is paying a 4% interest rate. So you decide to put your money into the savings account instead. You subtract the 2% from the 4% to get a net positive of 2% per year (roughly).
So you take 30 years or more to pay off your loans... making a slight positive of 2% per year.
But let's say you pay off your loans quickly, ie 10 years. You won't be able to put any money away in savings for the first 10 years. So no net gain there. But after those first ten years, with all your loans paid off, you'll be making net gains for the next 20, 30, 40, 50 years. Ie, according to the simple numbers I mentioned, you'd be making 4% every year off your savings account (after the first ten years) instead of 2% for the next 30 years.
I haven't done a lot of thinking yet about my loans (still an MS III), and I haven't discussed it with anyone yet either, so I'm not sure if any of this makes sense. That is just how it appears intuitively to me.
Go to Bankrate.com and play around with compound interest calculator for the plans you have presented - there shouldn't be anything confusing about it. Let's assume you can afford to pay $1200 per month towards your loans. Instead of paying $1000 per month each month for 10 years, you consolidate and reduce your monthly payment to $400 per month at 2%. But, since you could afford to pay $1000 per month, you wisely invest the other $600 per month into an account that makes 4% interest. In 10 years, a $400/month payment will be like a $150 per month payment in today's money. But by then you will also be making more money then when you started as an attending, and you would be able to afford $1200 per month to invest into the same account where you have made 10 years worth of compounded savings. All of a sudden $400 per month or loans becomes chump change and your investment/savings account is through the roof. Here's how this example works out:
30 years of consolidated loan payments at $400/month: $144,000.00 spent
10 years of paying $600/month into a 4% account: $89,901.73
PLUS 20 years of paying $1200/month into a 4% totals $642,942.27
OR Option #2 - pay your loan off in 10 years and then invest for another 20 years (again, assuming $1000 per month for ten years, then $1600 per month into investment):
10 years of loan payments at $1000/month: $120,000.00
10 years of savings: $0.00
20 years of investing $1600/month at 4%: $594,608.67
Difference between option 1 and option 2:
$642,942.27 - $594,608.67 = $48,333.60 you would save as profit if you spread your payments over 30 years.
Not to mention that these rates are based on a simple savings account. In actuality, your interest rate return would be between 8-12 % based on good investment choices, meaning your profit over 30 years is even more. Does this help clear things up?
Based on 10%:
$126,224.40 (10 years at $600) then 20 at $1200 per month:
$ 1,756,410.64
or
20 years at $1600/month:
$1,209,647.99
Based on expected investment rates over 30 years, paying $120,000 of student loans in 10 years would cost you over $430,000 in savings over 30...