The basics
What a VA loan is
A VA loan is made by the lender and partly guaranteed by the Department of Veterans Affairs. The guarantee is VA’s promise to repay the lender part of its loss if the loan is not repaid. That promise is what lets the loan be made with no down payment in most cases and no monthly mortgage insurance.
There is no down payment in most cases, though a veteran who has used part of the benefit before may need one on a larger loan. The interest rate is agreed between you and the lender; VA does not set it.