When you require a mortgage for more than 80% of the purchase price of a property, that mortgage must be insured by Canada Mortgage and Housing (CMHC) or GE Mortgage insurance. The premium charged by these company`s decreases as the down payment increases. When you finance your property at 95%, a premium of 3.75% is added to the mortgage. By increasing the down payment to 10% of the purchase price the premium can be reduced to 2.5%. If you can put down 20%, you can avoid any additional insurance fee. Depending on your situation there are ways that you can structure this financing to avoid the CMHC or GE insurance premium.