This ratio is calculated by dividing the loan amount by the home’s purchase price if you are buying a home, or the current home value if you’re refinancing. So if you put 20% down when buying a home, your LTV would be 80%. There are conventional loan products that allow you to put as little as 3% down, FHA loans require at least 3.5%, and VA and USDA Loans allow buyers to put zero down but have other associated fees and eligibility requirements.