Above a certain loan amount, your mortgage stops being "conforming" and becomes a "jumbo" loan — and that shift changes more than the size of the number. Here is how the line works and why it matters. All figures are illustrative and subject to change; this is not a commitment to lend.
Where the line falls
Conforming loans are those that fall within the maximum loan limits set each year for loans eligible to be backed by the major housing-finance agencies. Borrow above that limit and your loan is a jumbo, financed outside the agency framework by portfolio lenders and investors with their own guidelines. The exact limit is adjusted annually and is higher in designated high-cost areas.
High-balance conforming
There is a middle tier worth knowing about. In high-cost counties, the conforming limit is raised, creating "high-balance conforming" loans — larger than the standard limit but still within the agency framework. For buyers in expensive markets, a high-balance conforming loan can offer agency-style terms on a loan size that would be jumbo elsewhere.
What changes with a jumbo
Because jumbo loans are not backed by the agencies, lenders carry the risk on their own books, and that tends to mean stricter requirements:
- · **Documentation** — fuller income and asset documentation is common.
- · **Reserves** — jumbo lenders often want to see more months of reserves left over after closing.
- · **Credit and down payment** — expectations are frequently higher than on a conforming loan.
The flip side is that, because well-qualified jumbo borrowers are attractive, jumbo pricing is sometimes competitive with conforming rather than dramatically higher. It varies by lender and market.
The piggyback alternative
When a loan amount sits just over the conforming line, some buyers use a "piggyback" structure — a first mortgage at the conforming limit plus a second loan covering the rest — to stay within conforming terms on the larger first lien. Whether that beats a single jumbo depends on the pricing of both pieces and your goals. It is exactly the kind of comparison worth running before you commit.
The Alliance take
We have access to both agency and jumbo investors across our lender panel, so we can show you a single jumbo and a conforming-plus-second side by side and let the numbers decide. The right structure near the conforming line is rarely obvious without running both.
Buying near or above the conforming limit? Start an application and we will model the structures that fit your loan size.