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Posted by eagent on January 24, 2008, 5:21 pm
> With the drop in rates on Tuesday, I took a peak at mortgage rates and
> started thinking of the various ways to measure whether refinancing
> made sense. I could not come up with a good measure (financially) in
> some cases.
>
> The question: Is there a way to quantify the "additional time" added
> to the repayment term when refinancing?
>
> Bought house Dec of 05
> refinanced June of 06 (added 8 months to repayment terms, lowered rate
> by .5%)
>
> Currently a P&I payment of $1689.44.
> original LTV of 80%, $289,900 financed at 5.75% 30 year fixed.
>
> How do you measure the fact that a loan of the same rate (30 year
> fixed) would lower the payment today, simply because I have paid down
> about $3400 of principal?
>
> If I were to refinance 30 year fixed at 4.5% or 4% the extra 3 years
> I add on to my loan repayment schedule is more than enough to
> compensate me because I save more than $300 each month on the
> mortgage. I could easily send $12000 extra over the next 40 months to
> pay the principal down and get the extra 3 years back. If I invested
> the $300 I would come out even further ahead.
>
> If I were to refinance 30 year fixed at 5%, I save more than $130 per
> month on the P&I, but the added 3 years of payments (from the original
> 2035 payoff year). This does not appear worth the money: ($130*27*12=)
> $42000 over 27 years of payments I would save.
>
> Is there a way to quantify the "additional time" added to the
> repayment term when refinancing?
Multiple the delta (difference) between the two payments for the
number of payments on the new loan.
Multiple the AMOUNT of the original payments by the delta (difference)
in the term.
Either add or subtract these two numbers, depending on whether your
increasing or decreasing the term, to get the net difference to you.
Gene E. Utterback, EA, RFC, ABA
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