An important part of mortgage qualifications assessments by lenders is the evaluation of the borrower’s management of personal debt.  Borrowers with high debt ratios and high debt loads may have a much harder time getting approved for a home loan.  Assessing personal debt is a facet of the loan evaluation process performed by the lender
Money paid to the lender in addition to the established payment amount used directly against the loan principal to shorten the length of the loan and subsequently reduce interest charges over the life of the loan.
A mortgage amortization calculator can help you understand how each monthly mortgage payment of principle and interest is applied first to interest owed and then your mortgage balance or loan principle.  Additionally, an amortization schedule that can be produced by the mortgage calculator is useful for borrowers trying to choose between mortgage loans with different