Jumbo pricing can beat conforming once your loan size climbs past the standard conforming limit, and the exact crossover is lender-specific. Two forces drive it: - High-balance conforming carries agency add-ons. The tier between the standard national limit and the higher ceiling in high-cost counties takes extra Fannie and Freddie pricing hits that grow as your down payment shrinks. With less than 25% down, that add-on currently works out to roughly an eighth to a quarter point on the rate, even on a purchase. It is a loan-level price adjustment, so the exact figure can shift, but that range is a fair planning number. - Many jumbos never get securitized. They stay on a portfolio lender's or bank's balance sheet instead of being sold into Fannie/Freddie mortgage-backed securities, and a lender with a lower cost of funds can price aggressively. Jumbo borrowers also tend to be stronger files (lower loan-to-value, higher credit scores, more reserves), so the risk pool is tighter and the rate reflects it. Mortgage insurance plays a role too, since most MI companies will not cover jumbo loans at all. The crossover point depends on the year's conforming limits, which reset annually for both the standard limit and the high-cost-area ceiling, so confirm the current numbers for your county. It also depends on the lender; some banks quote their sharpest jumbo rates in exchange for parking liquid assets with them. The only reliable answer is to price both side by side, which is exactly what we run on the free Roadmap conversation.