It simply calculates the cost of your mortgage insurance premium as it changes with your down payment percentage – only up to a 20% down payment, of course, after which CMHC insurance is no longer required. Remind your clients that their premium is added to their mortgage loan, so it’s not cash they need to have upfront! But they will be paying it off over the life of their mortgage, and this widget is great for curtailing the deer-in-headlights look that some people get when signing a mountain of paperwork. In the example below, we used a $500,000 asking price and chose a 25-year amortization period.