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When Does Early Mortgage Make Sense?
By: Stephen Nelson
Early mortgage repayment looks on paper at least like a wonderful deal. If you
have a typical mortgage and you are near the beginning of the mortgage term and
make an extra $25 a month in principal payments, you could potentially save
$25,000 in interest over the life of the loan.
Note: The exact amount of early repayment savings depends on the loan, but, in
general, the apparent savings are astounding.
In spite of the superficial profit that seems to come from early mortgage
repayment, it’s often not a good decision. The tragedy here is if you would have
used that $25 a month to boost your individual retirement account, or IRA
contribution, you would end up with $50,000 in your IRA account. If you would
have used the $25 a month to make extra contributions to your employer’s 401(k)
plan, you might have easily ended up with $75,000 in a 401(k) account.
The reason for these discrepancies is simple. In effect, when you calculate the
interest you save by early mortgage repayment, or the interest you make by
investing in an IRA or a 401(k), you are making a compound interest calculation.
Any time you compound interest over long periods of time, the numbers eventually
grow large. But the most important factor driving the interest rate compounding
calculation is the interest rate. The larger the interest rate, the faster the
compounding and ultimately the larger the final value.
If you can prepay a mortgage that charges 6% but invest in an individual
retirement account or 401(k) account that will pay 8%, mortgage repayment is
actually a terrible idea. And, unfortunately, very small differences in interest
rates ultimately produce very large differences in the final compounded values.
Although early mortgage repayment is a technique that many financial writers who
don’t know better recommend, you are typically better off using the money you
would have used for early mortgage repayment for additional individual
retirement account or 401(k) contributions. The one scenario in which you could
save money through early mortgage repayment is when you have already taken
maximum advantage of these other investment choices and are still looking for
some other place to “save” additional money.
About the Author:
Redmond WA tax CPA Stephen L. Nelson is the author of both Quicken for Dummies,
QuickBooks for Dummies and more than 100 other books as well. Nelson holds an
MBA in Finance and an MS in taxation.
His website is http://www.stephenlnelson.com.
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