A conventional loan is a mortgage loan that a government agency does not back. While some government-backed loans provide unique benefits to homebuyers, conventional loans remain far and away the most common type of mortgage.
There are two types of conventional loans: conforming and nonconforming. Conforming loans conform to guidelines set by the government-backed Federal National Mortgage Association (Fannie Mae) and the Federal Home Loan Mortgage Corporation (Freddie Mac), which own the majority of mortgages in the U.S.