• The loan constant is a percentage that shows the annual debt service of the loan compared to the total face value of the loan.

  • Principal amount, interest rate on the loan, as well as the duration and frequency of payments are used to calculate the permanent loan.
  • Permanent loan tables and calculators are popular for calculating mortgage payments.
  • When looking for a loan, borrowers often choose the loan with the lowest loan constant, as this means that the debt service payments on that loan will be lower.