Insured or High-Ratio Mortgage With a high-ratio mortgage the purchaser has less than a 25% down payment. These mortgages are often referred to as NHA mortgages because they are ed under the provisions of the National Housing Act. You can borrow up to 95% of either the purchase price or the appraised value of the property (whichever is less) but are required by law to insure the mortgage and pay a one-time insurance premium based on the total value of the mortgage. For insurance you can either use the Canada Mortgage and Housing Corporation (CMHC) or a government approved private insurer. Quelle "Insured or High-Ratio Mortgage" : General Main page for "Insured or High-Ratio Mortgage"