You can refinance almost as soon as your loan closes, and there is no hard limit on how often. The six-month mark and the math are the real gatekeepers. On how soon: since the post-2008 reforms, the common loan types (conventional, FHA, VA, USDA) generally carry no prepayment penalty for you as the borrower, so nothing legally locks you in with your original lender. The one wrinkle is the 180-day mark. If your loan pays off inside the first six months, the lender who originated it usually has to hand back what they earned on it (an early-payoff penalty on their side, not yours). Because of that, most lenders and borrowers prefer to wait at least six months between refinances, even on a no-cost refi. The government streamline programs carry their own seasoning clocks (roughly six payments and 210 days), so confirm those if a streamline is the plan. On how often: there is no cap. You can refinance as many times as there is a documented net tangible benefit, which the loan programs require anyway under their anti-churning rules. Whether it is worth doing comes down to the math. On a large balance, even a modest rate improvement can be big enough to absorb a lender's early-payoff clawback and still come out ahead; on a smaller balance, the same rate drop may be worth waiting out the six months first. If you are unhappy with your current lender you are free to shop immediately, though it is usually worth giving them a chance to compete. We can run your actual break-even on the free Roadmap conversation.