The amount of what you qualify for can vary depending on the type of loan that you are getting.  A conventional loan generally  allows up to about 43% DTI (Debt to Income).  In other words, your total monthly debt (including your new house payment) can only be about 43% of your total monthly income.  This also goes for USDA loans.  If your going to be getting an FHA or VA loan, then DTI level goes up to about 50% thereby allowing you afford a larger loan amount.   Please call me with any questions you may have about your situation.