The bank may demand more of a down payment from you (higher %) because of your credit rating or depending on what you plan on buying. ie; house, business property, vacation property, etc. When you go in for a pre-approval, let them know what you plan on buying (they'll want to know this anyways), but if you have something specific and a known price, then come with this info. They will let you know what you qualify for and what % you are required to put down.