To qualify for a mortgage, borrowers must meet credit score, down payment, and debt-to-income (DTI) ratio requirements, which vary by loan type. Conventional loans typically require a 620+ credit score, 3% down payment, and DTI under 36%. Jumbo loans need higher scores and down payments. FHA, VA, and USDA loans offer more flexible terms, with lower credit scores and down payment options, especially for first-time buyers, veterans, and rural residents. Verification of income, employment, and assets is also required.