Please allow 7-10 days, after the close of the collection, to complete posting of all timely payments. They'll figure out the amount at closing and you'll get the right amount.The payoff statement is a vital document due to the interest on your loan balance, which is added daily. KeyBank offers several options for you to pay your mortgage and we know you have questions too. The mortgage payoff calculator helps you find out. The mortgage payoff statement is a document that provides a comprehensive breakdown of the remaining balance on a mortgage. It includes the remaining loan balance, accumulated interest, and any additional fees.