Yes – more frequent repayments will result in a decrease in the overall cost of interest on your mortgage. This is because interest is calculated daily, meaning the faster your loan debt falls, the faster the interest you’re charged will decrease in equal measure. For instance, a $500,000 home loan repaid over 30 years at 3% p.a. comparison would cost almost $35,000 less when paid on a fortnightly basis compared to monthly.