"Your payments and ratios are going to be off. If your monthly payment for a 30 year loan comes out to $1,000, the borrower will be actually paying $1,083.33 monthly."
One additional comment - that difference of 8.3% in the payment amount, could equate to a increase of 3.6% in the debt ratio!
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Integrity. With it, nothing else matters. Without it, nothing else matters.