We used those checks from Chase for a fixed rate of 2.99%, wrote it for $20,000, and charged a $30 fee. Cutting our interest to 1/3 what is was before. It was much better than being able to deduct it on our taxes. Saving us about $850 in the first year ($1320 in interest savings, loss of $470 in tax savings). Just make sure you don't miss a payment, your rate will go way up. We use our bill payer account to make our minimum payment twice a month, just to make sure!!
I agree that the credit score for many could be affected poorly, but for others the impact from the savings could greatly outweigh the credit issue.
We could always shift the debt to our HELOC at 5.7% if we need to.
By the way, we first paid off our
DVC loans with our BofA rewards card, then used the check from chase. Thats an extra 20,000 air miles or $200.00 reward. Just a one time bonus to sweeten the deal.
Be careful if you try to do this, you can't use one of these checks to pay off the balance of a debt to the same bank. i.e. write a Chase convienience check to pay off a Chase loan/credit card.