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How do you choose which mortgage structure is appropriate when buying a home?
There are several factors that you need to consider: If you have already decided on the house.  Did you prequalify for the mortgage loan - If so, did you lock in the rate. If you have not already done than your research is still valid. Consider two calculators first - Affordability + Mortgage calculator Advice :  If you can afford to pay 20% down then please do, Lesser monthly mortgage payment, you can save approx 400 $ per month, the above calculator will give you an exact idea. If you can afford go for 15 years loan - Lower interest rate over 2-5 years period. Do not assume the average ROI will + 8-10%. It all depends on market and has variable factors like city, area and demand.  In terms of Income your interest payment is Tax deductible at the end of the year.