Definition
A mortgage too large to be sold to the government-sponsored agencies, exceeding the conforming loan limits set for each county every year. Because the lender keeps the risk, jumbos demand stronger credit, bigger down payments, meaningful cash reserves, and full documentation.
Why it matters
Crossing the jumbo line changes the approval game more than the rate: reserves of many months of payments and tighter debt-to-income math. Buyers near the threshold sometimes size the down payment specifically to keep the loan conforming.
Example
A buyer of a $1.4 million home borrows $1.1 million, above their county's conforming cap. The jumbo lender wants 20% down ($280,000), a 740+ score, and a year of payments in reserve. Another buyer sitting $30,000 over the cap raises their down payment by $30,000 to stay conforming and qualify more easily.
Put it into practice
Related terms
This definition is educational, not financial, legal, or tax advice. U.S. rules and limits change; verify time-sensitive details with official sources. See our disclaimer.