There's no mandatory waiting period. You can refinance as soon as the numbers make sense, and some borrowers sign refinance docs within a couple of months of closing. Three real conditions do apply. Early-payoff recapture. Lenders are often paid based on the loan they place, and if it refinances away inside roughly the first six months, the original lender may have to return that compensation. If you valued your original loan officer, go back to that same person first so an early refinance doesn't cost them. Serial refinancing needs the right structure. Refinancing repeatedly is fine as long as you're not rolling closing costs into the balance and resetting to a fresh 30-year term every time, because then your balance never falls. Cover the cost with a rate credit and refinance into a term that matches what you've already paid down. A simple test: if it costs $2,500 and saves $200 a month, it pays for itself in about a year, worth it if you're staying put. Qualification is never guaranteed. Every Loan Estimate says so, because your future ability to refinance depends on your income, credit, and the home's value. A large credit drop, a loss of income, or a home that won't appraise can each block you. Conventional loans are fully qualifying, with no streamline option; FHA, VA, and USDA all offer streamline refinances that skip the appraisal and lean mainly on your payment history. Confirm current guidelines, since programs change.