Rezdawg said:
Aphistis, do your scenario with 300K loan and 5.75% interest rate.
Gladly. You should be more careful about the things you ask for.
STUDENT LOAN REPAYMENT: REDUX
Scenario 1: $300,000 in student loan debt paid in 10 years
$300,000 in student debt principal, for 10 years, locked in at current 5.75% APR =
$3561.05 per month
Total interest paid on this loan =
$127,326.00
After repaying loan debt, loan payment money is placed in a Standard & Poor index fund, which has yielded an average 30-year annual return of 10.77%.
$3561.05 monthly, for 20 years, at 10.77% annual yield, with all dividends reinvested =
$3,065,940.13
So, in this scenario you've earned
$2,211,288.13 in interest on
$854,652.00 in capital, for a total of
$3,065,940.13
$3 million is a pretty nice pile! But, just for the hell of it, let's take a look at what would happen doing it the way I suggested. I bet that, like Rezdawg predicts, the advantages of a longer repayment period disappear with the increased loan burden, right?
Right...?
Scenario 2: $300,000 in student loan debt paid in 30 years
$300,000 in student debt principal, for 30 years, locked in at current 5.75% APR =
$1750.72 per month
Total interest paid on this loan =
$330,259.20
Difference in interest between Scenario 1 & Scenario 2 =
$202,933.20
Difference in monthly loan payment between Scenario 1 & Scenario 2 =
$1810.33
Put that difference into the same Standard & Poor index fund as above, and you get...
$1810.33 monthly, for 30 years, at 10.77% annual yield, with all dividends reinvested, less $202,933.20 in additional loan interest =
$4,778,283.20
So, in this scenario you've earned
$4,329,544.40 in interest on
$651,671.99 in capital, for a total of
$4,778,283.20
Final difference between Scenario 1 & Scenario 2 =
$1,712,343.07
So, by taking the long-term repayment this time, you've spent
$202,980.01 less on investmental capital (which
STILL, by itself, completely offsets the additional interest paid on the 30-year loan) and earned
$1,712,343.07, or
55.9%,
more on your investment. In case you missed it the first time, that's
55.9%. That's right, not only do the advantages of extended repayment fail to disappear under these circumstances, per Rezdawg's prediction, but they TRIPLE in value.
Personally, Rezdawg, if you want to unload your loans as soon as possible, that's no business of mine. Lots of people would rather have the peace of mind of knowing they're out from beneath their debt burden, and if you're one of those, go for it and don't let anyone stop you. But if you're going to sit around here giving people terrible investment advice, and then refusing to back down when confronted about it, you'd bloody well better not be surprised when someone else argues in rebuttal, with detailed supporting explanation, that on this particular topic, you're so full of crap it's a wonder you haven't yet aspirated any. G'night.