The size of a down payment can vary. Depending on the type of mortgage, down payments generally range from 5% to 20% of the purchase price.
To obtain a conventional mortgage, home buyers are required to put down at least 20% of the purchase price or appraised value (whichever is less) as a down payment. If you don't have the necessary time or resources to save a full 20% down payment, you can choose a high-ratio mortgage and buy a home with a down payment of as little as 0%. This option is called a high-ratio mortgage and it requires you to purchase default insurance.
Whether you choose a conventional or a high-ratio mortgage, one thing is almost always certain: the larger your down payment, the more you save in the long run.
Want more information? Visit the Canada Customs and Revenue Agency Publication.