A secured lender shall prepare and deliver a payoff demand statement to the person who has requested it within fourteen days after receipt of the demand. Use this mortgage calculator to calculate estimated monthly mortgage payments and rate options.Use Bank of America's auto loan calculator to determine your estimated monthly payments and your approximate rate for a new or used car loan. Use Bank of America's auto loan calculator to determine your estimated monthly payments and your approximate rate for a new or used car loan. Do you need a loan payoff request form?