Mortgages vary in type and rates, with 15-year mortgages typically having lower rates than 30-year ones. To negotiate a better mortgage rate, it's essential to shop around and compare offers from multiple lenders. A strong credit score, income, and assets can enhance your negotiating position. If your credit isn't great, use competing offers to leverage a better deal. Always inquire about fees to understand their purpose and negotiate them if necessary. Taking these steps can lead to significant savings.