Compare a monthly home-loan schedule against a fortnightly one. Twenty-six fortnightly repayments per year deliver the equivalent of thirteen monthly repayments, so total interest drops and the loan finishes earlier — usually by several years on a 30-year mortgage. The calculator shows the side-by-side: monthly repayment, fortnightly repayment, total interest saved, and years shaved off the loan. A common technique brokers use to find a cost-free way to pay a loan down faster.