
Lower the rate on a VA loan you already have, or swap an adjustable rate for a fixed one.
The Interest Rate Reduction Refinance Loan (IRRRL, often called a "streamline") replaces a VA-backed loan you already have with a new VA-backed loan, usually to get a lower rate and lower monthly payment. It can also move you from an adjustable rate to a fixed rate so your payment stops changing. You get it through a private lender, not from VA directly.
All three must be true, per VA: you already have a VA-backed home loan; you are using the IRRRL to refinance that existing VA loan; and you can certify that you live in the home now or lived in it before. If a second mortgage sits on the home, that lender must agree to move behind the new loan.
Quick check from VA: divide the closing costs by your monthly savings. That tells you how many months it takes to break even.
Phone
Official pages