You’ve found the house. It’s listed at $1.2 million, and you’re ready to make an offer. Then your lender asks a question that stops you cold: ‘Are you planning to use a jumbo loan or a conventional mortgage?’ If you’re not sure what the difference is, you’re not alone. The terms get tossed around as if they’re opposites, but the reality is more nuanced.
Every jumbo loan is a conventional mortgage. The reverse isn’t true. The real dividing line is whether your loan amount stays within the conforming loan limits set by the Federal Housing Finance Agency (FHFA). Cross that line, and you’ve got a jumbo loan. Stay under it, and you’ve got a conforming conventional mortgage.
That single threshold changes how lenders evaluate you, how much cash you need, and how long it takes to close. Here’s what you need to know before you choose.
What Is a Conventional Mortgage?
A conventional mortgage is any home loan that isn’t backed by a government agency like the FHA, VA, or USDA. Conventional loans can be conforming or non-conforming. Conforming loans meet the guidelines of Fannie Mae and Freddie Mac, including loan limits. Non-conforming loans, like jumbo loans, don’t.
For 2025, the conforming loan limit for a one-unit property is $806,500 in most U.S. counties. In high-cost areas like parts of California, New York, and Colorado, the ceiling goes up to $1,209,750. These limits adjust annually based on home price data.
Most conventional mortgages are conforming. They’re easy to find, come with competitive rates, and can be approved quickly through automated underwriting systems.
What Is a Jumbo Loan?
A jumbo loan is a conventional mortgage that exceeds the conforming loan limit for its county. Because Fannie Mae and Freddie Mac won’t buy these loans, lenders either keep them on their books or sell them to private investors. That extra risk shapes everything from credit score minimums to how much money you need in the bank.
Jumbo loans aren’t just for luxury mansions. In expensive markets, a modest three-bedroom ranch can easily require a jumbo loan. They can be used for primary residences, second homes, and investment properties.
Here’s a quick example. In a county where the limit is $806,500, a $900,000 loan is jumbo. In a high-cost county with a $1,209,750 limit, that same $900,000 loan is conforming. Location matters as much as price.
The Core Difference: Loan Limits and Conforming Status
The single biggest difference between a jumbo loan and a conventional mortgage is the loan amount relative to the conforming limit. But that one factor triggers a cascade of other differences. Lenders treat jumbo loans more like portfolio investments, so they scrutinize them harder.
- Loan limit: Conventional conforming loans stay at or below $806,500 (2025, most areas). Jumbo loans exceed that threshold.
- Government backing: Conforming loans can be sold to Fannie Mae or Freddie Mac. Jumbo loans cannot.
- Credit score: Conventional loans often allow scores as low as 620. Jumbo loans typically require 700–720 or higher.
- Down payment: Conventional loans can go as low as 3% for first-time buyers. Jumbo loans usually require 10–20% down.
- Cash reserves: Conventional loans may require zero to two months of reserves. Jumbo loans often demand 6–12 months.
- Appraisal: One appraisal is standard for conventional. Jumbo loans may require two.
- Processing time: Conventional loans can close in 30 days. Jumbo loans often take 45–60 days.
Credit Score and Down Payment Requirements
Conventional loans are more forgiving. You can qualify with a 620 FICO score, though you’ll get better pricing at 740 or above. First-time buyers can put down as little as 3% through programs like Fannie Mae HomeReady. If your down payment is less than 20%, you’ll pay private mortgage insurance (PMI).
Jumbo loans are stricter. Most lenders want a minimum 700 credit score, and some won’t budge below 720. Down payment requirements typically start at 10% for primary residences, but 15% or 20% is more common. For second homes and investment properties, expect 20–25% down.
On a $1 million loan, 10% down is $100,000. At 20% down, you’re writing a check for $200,000. That’s a significant difference in upfront cash.
Do You Need PMI on a Jumbo Loan?
No. Jumbo loans don’t require private mortgage insurance. Lenders offset their risk with higher down payments and stricter credit requirements instead. That can save you hundreds of dollars per month compared to a conventional loan with less than 20% down.
Debt-to-Income Ratio and Cash Reserves
Your debt-to-income ratio (DTI) compares your monthly debt payments to your gross monthly income. Conventional loans generally allow a DTI up to 43%, and some lenders stretch to 50% if you have compensating factors like a high credit score or large reserves.
Jumbo loans are less flexible. Many lenders cap DTI at 43%, and some prefer 38–40%. You’ll also need to prove you have cash reserves. A common requirement is 6–12 months of mortgage payments in savings or investments. For a $1 million loan with a $6,000 monthly payment, 12 months of reserves means $72,000 in the bank after closing.
Conventional loans might require zero to two months of reserves. The gap is wide.
Interest Rates and Closing Costs
Historically, jumbo loans carried higher interest rates than conventional loans. That’s not always true today. In recent years, jumbo rates have been competitive, sometimes even lower for well-qualified borrowers. Lenders can price jumbo loans attractively because they’re often held in portfolio and the borrowers are lower risk.
Closing costs run 2–5% of the loan amount for both types. On a $1.2 million jumbo loan, 2% is $24,000. On a $600,000 conventional loan, 2% is $12,000. The percentage is similar, but the dollar amount scales with the loan.
Appraisal costs differ too. A single appraisal for a conventional loan might cost $500–$800. Jumbo loans sometimes require two appraisals, especially for loan amounts above $1.5 million. Each appraisal can run $800–$1,500, adding $1,000 or more to your closing costs.
Processing Time and Underwriting
Conventional loans use automated underwriting systems like Fannie Mae’s Desktop Underwriter. If your file is clean, you can get a conditional approval in minutes and close in 30 days or less.
Jumbo loans go through manual underwriting. A human reviews your tax returns, bank statements, employment history, and asset documentation. The process takes longer, often 45–60 days. Some lenders require a second level of review or a more detailed appraisal, which adds time.
If you’re in a competitive market, a slower closing can hurt your offer. Sellers may favor buyers with conventional financing because it’s seen as faster and less likely to fall through.
Which Loan Is Right for You?
Start with the conforming loan limit for your county. If the amount you need to borrow is at or below that limit, a conventional conforming loan is almost always the simpler, cheaper choice. You’ll have more lenders to choose from, lower credit score and down payment requirements, and a faster closing.
If you need to borrow more than the limit, a jumbo loan is your only option. Don’t assume it’s automatically more expensive. Shop at least three lenders, including banks, credit unions, and mortgage brokers. Some lenders specialize in jumbo loans and offer better terms than you’d expect.
Consider how long you plan to stay in the home. If you’re buying a forever home, the slightly higher costs of a jumbo loan may be worth it. If you’re planning to move in a few years, a conventional loan with a lower down payment might preserve more cash for other goals.
Working With a Lender Who Knows Jumbo Loans
Not every lender offers jumbo loans. Banks and credit unions often keep them in portfolio, which means they have more flexibility but also more stringent requirements. Mortgage brokers can shop multiple jumbo lenders at once and compare rates and fees.
Before you start house hunting, get pre-approved. For jumbo loans, a pre-approval letter carries more weight if it’s from a lender that has verified your income, assets, and credit. Sellers in the luxury market expect it.
Ask your lender these questions:
- What is the minimum credit score for a jumbo loan?
- How much down payment do you require for my situation?
- How many months of cash reserves will I need?
- What is your maximum DTI ratio?
- Do you require one appraisal or two?
- What is your average closing time for jumbo loans?
The label on your loan matters less than the numbers behind it. A conventional loan that exceeds the conforming limit becomes a jumbo loan. What changes is how lenders evaluate you. Knowing the thresholds and requirements for your area puts you in a stronger position to negotiate and choose the right financing.