Most American mortgages are conforming loans — meaning they fit the rules that let Fannie Mae or Freddie Mac buy them from your lender. That single fact does more to shape your rate and your paperwork than almost anything else about the loan. Borrow a dollar more than your county's limit and you're in jumbo territory, where the rules are written by individual lenders rather than by Fannie and Freddie.
For 2026 the baseline conforming limit on a one-unit home is $832,750, rising to $1,249,125 in designated high-cost counties. This guide explains what that line actually means, where it sits, and what genuinely changes on either side of it.
What "conforming" actually means
Fannie Mae and Freddie Mac don't lend to you. They buy loans from the banks and mortgage companies that do, package them, and sell them to investors. That secondary market is what lets your lender hand you a large sum and then get its money back quickly enough to lend again.
Because Fannie and Freddie are buying at enormous scale, they will only buy loans that meet a standard template — a maximum loan size, documentation standards, and underwriting criteria. A loan that fits is "conforming". A loan that fits every rule except the size limit is a jumbo loan, and the lender either has to keep it on its own books or find a private buyer.
That difference in who ultimately holds the risk is the reason everything else differs.
The limit is set by county, not by state
This is the single most misunderstood part. There is no "California limit" or "Texas limit" — the Federal Housing Finance Agency (FHFA) sets a limit for every county in the country, based on local median home values.
The mechanism works like this: there's a national baseline, currently $832,750. Where 115% of the local median home value exceeds that baseline, the county gets a higher limit — capped at 150% of the baseline, which gives the $1,249,125 ceiling. Alaska and Hawaii operate under a statutorily higher baseline again.
Across the 3,143 counties in the FHFA's 2026 limit values, announced 2025-11-25 (retrieved 2026-08-15) file, 155 carry a high-cost limit above the baseline. In 31 states every single county sits at the baseline; the other 19 have at least one county above it.
The practical consequence: two buyers in the same state, borrowing identical amounts, can land on opposite sides of the jumbo line purely because of which county the house is in. If you're near the threshold, check the county — not the state.
Roughly what price does the limit correspond to?
The limit applies to the loan, not the purchase price, so your down payment moves the threshold. With 20% down, the $832,750 baseline corresponds to a home of about $1,040,938. In a high-cost county at the $1,249,125 ceiling, that's roughly $1,561,406.
Put a larger deposit down and you can buy a more expensive house while still borrowing a conforming amount. This is genuinely useful leverage: a buyer just over the line can sometimes get back under it by increasing the down payment rather than accepting jumbo terms. Run both versions in a calculator before assuming you need a jumbo loan.
What actually changes when you go jumbo
Jumbo lending is not exotic or disreputable — it's a large and normal market. But the terms are set by whoever is holding the loan, so they're stricter and less standardised.
- Larger down payment. Conforming loans routinely go down to 3–5% for well-qualified buyers. Jumbo lenders commonly want considerably more, and the best pricing usually appears at higher equity levels.
- Tighter credit requirements. Expect a higher minimum credit score than a conforming loan would require, and less flexibility if your file has blemishes.
- More reserves. Jumbo lenders often want to see months of mortgage payments still in the bank after closing. This surprises buyers who have stretched to fund the deposit.
- Heavier documentation. More scrutiny of income, especially if you're self-employed or a large part of your compensation is variable.
- Rates that don't move in lockstep. Jumbo rates are sometimes higher than conforming and sometimes lower, depending on how much appetite banks have for holding large loans at that moment. Don't assume either direction — get quotes.
The trap just above the line
The awkward zone is borrowing slightly more than your county's limit. You take on all of the jumbo requirements for the sake of a small amount of extra borrowing. Three common ways around it:
- Increase the down payment to bring the loan back under the limit. Often the cleanest fix if the cash is available.
- Negotiate the price. A modest reduction can move you back across the line, which is worth more to you than the headline saving.
- Consider a piggyback structure — a conforming first mortgage plus a smaller second loan. This adds complexity and a second payment, so weigh it properly rather than assuming it's free.
Limits change every year
FHFA resets the limits each November for the following calendar year, tracking its own house price index. In a rising market the limits rise, which quietly moves some buyers from jumbo back into conforming territory without them doing anything.
If you're buying near a year boundary and sitting just above the line, it's worth knowing the new numbers before you commit to jumbo terms.
How to check your own county
Our state calculator pages show the conforming picture for each state, including which counties carry high-cost limits and what they are. FHFA also publishes the full county-level list directly.
Two cautions. First, these figures are for one-unit properties — two-, three- and four-unit limits are higher. Second, the limit is one criterion among several; a loan can be under the limit and still fail to conform for other reasons, such as documentation or property type.
The bottom line
Conforming loans are the standardised mainstream product; jumbo loans are everything above the size limit, priced and underwritten by the institution carrying the risk. In 2026 the line sits at $832,750 in most of the country and $1,249,125 in the priciest counties, and it's a county line, not a state one.
If you're anywhere near it, find your county's actual limit first, then check whether a slightly larger down payment keeps you on the conforming side. That one decision is often worth more than the rate shopping that buyers spend far longer on.
Limit figures above are FHFA conforming loan limit values, 2026 limit values, announced 2025-11-25 (retrieved 2026-08-15). See our methodology for sourcing.