Across higher-priced parts of Massachusetts, a standard conforming mortgage often does not reach far enough.
The 2026 county thresholds, the Greater Boston and islands high-balance tier, and standard lender rules define where jumbo financing begins.
Check Your Massachusetts Jumbo Loan Eligibility
Checking these benchmarks helps you determine if your purchase requires a jumbo loan and how to structure your financing near the limit.
What Is a Jumbo Loan?
A jumbo loan is any residential mortgage where the loan amount exceeds the conforming limit for the county and the number of units in the property. Borrow at or below your county ceiling and you have a conforming loan; borrow one dollar over and you have a jumbo mortgage.
Each year, the Federal Housing Finance Agency (FHFA) sets those conforming limits as the largest loans Fannie Mae and Freddie Mac are allowed to buy.
One detail trips up many buyers: it's the loan amount, not the purchase price, that decides whether a mortgage is jumbo. A million-dollar house can still use a conforming loan if your down payment brings the borrowed amount under your county cap, as the examples below show.
Because Fannie Mae and Freddie Mac do not buy jumbo loans, lenders hold them on their own books or sell them to private investors. Each lender sets its own credit score, down payment, debt-to-income, and cash reserve standards.
Even so, under the federal Ability-to-Repay rule, every lender must make a reasonable, good-faith determination that you can repay the loan according to its terms.
2026 Jumbo Thresholds in Massachusetts
In 2026, a one-unit loan in Massachusetts becomes a jumbo mortgage above $832,750, $962,550, or $1,249,125, depending on the county.
| Tier | Counties | Jumbo above (1 unit) |
|---|---|---|
| Baseline | Barnstable, Berkshire, Bristol, Franklin, Hampden, Hampshire, Worcester | $832,750 |
| Greater Boston | Essex, Middlesex, Norfolk, Plymouth, Suffolk | $962,550 |
| Islands | Dukes (Martha's Vineyard), Nantucket | $1,249,125 |
Multi-unit properties have much higher ceilings before a loan turns jumbo. In the five Greater Boston counties, a two-family home stays conforming up to $1,232,250 and a three-family up to $1,489,500. See our guide to conforming loan limits in Massachusetts for every county and unit count from one to four units.
Turning to the Federal Housing Administration (FHA) will not give you a higher borrowing cap, because FHA's 2026 one-unit maximum is the same $962,550 in the five Greater Boston counties and $1,249,125 on the islands. Loan limits change each year and the 2027 limits have not yet been announced, so confirm current figures with your lender.
High-Balance or Jumbo? The Greater Boston Middle Tier
In the five Greater Boston counties and on the islands, a one-unit loan above $832,750 up to the county limit is a conforming high-balance loan (sometimes called super-conforming), not a jumbo. Fannie Mae still buys high-balance loans when they are approved through its automated system, Desktop Underwriter (DU).
- Rulebook: High-balance loans follow the Fannie Mae and Freddie Mac guidelines used for conventional loans in Massachusetts, while jumbo loans follow each bank or wholesale lender's own guidelines.
- Underwriting: High-balance loans must run through Desktop Underwriter, where the maximum debt-to-income ratio is 50%, whereas jumbo lenders set their own standards, which are often stricter.
- Shopping: When your loan sits in the $832,751 to $962,550 band in Greater Boston, a mortgage broker can price your scenario as both a high-balance loan and a private jumbo loan across multiple wholesale lenders.
The seven baseline counties have no high-balance tier, so a one-unit loan there goes straight from standard conforming at $832,750 to jumbo above $832,750.
Typical Jumbo Loan Requirements
Because Fannie Mae and Freddie Mac do not govern jumbo mortgages, there are no universal rules. The ranges below are typical guidelines that vary by lender, not industry rules or guarantees of approval.
| Requirement | Typical range |
|---|---|
| Credit score | About 700 minimum; some lenders 740+ |
| Down payment | 10% to 20%; larger loans may need more |
| DTI | Often low-to-mid 40s (around 43%) at most; some prefer about one-third of income |
| Cash reserves | 6 to 12 months of payments after closing |
| Documentation | Full documentation; self-employed typically 2 years of tax returns |
| Appraisal | Required; ask whether your loan amount needs a second |
Credit Score
A credit score between 700 and 739 does not automatically shut you out of the jumbo market, especially when a broker compares multiple wholesale lenders on your behalf. A higher score opens more lender choices and lower down payment tiers. Our initial eligibility check uses no hard credit pull.
Down Payment and Mortgage Insurance
On a $1,000,000 purchase or loan, a 10% to 20% down payment equals $100,000 to $200,000.
Jumbo loans are not subject to Fannie Mae or Freddie Mac mortgage insurance rules, and many 20% down jumbo programs charge no mortgage insurance. Below 20% down, ask your loan officer how each lender handles mortgage insurance or pricing adjustments.
Debt-to-Income Ratio
Your debt-to-income ratio (DTI) is your total monthly debt—including the new housing payment, taxes, insurance, condo or HOA fees, and minimum car, student loan, and card payments—divided by your gross monthly income. Strong credit or large reserves can help offset a higher ratio with some lenders.
Massachusetts tax rates vary widely by town, so a $1.3 million home in one suburb can carry a very different tax bill than one two towns over. Check our Massachusetts property tax rates by town guide and test your budget in the home affordability calculator.
Cash Reserves
Cash reserves are the funds left after your down payment and Massachusetts closing costs, measured in months of the full housing payment. With a $6,500 monthly payment, 6 months of reserves is $39,000 and 12 months is $78,000.
Lenders differ on which accounts count—such as checking, savings, money market, brokerage, or a percentage of vested retirement accounts—so review your statements early in pre-approval.
Income Documents and Self-Employed Buyers
Salaried and hourly buyers provide recent pay stubs, W-2s, and bank and asset statements.
Self-employed buyers—including those receiving partnership or S-corporation K-1s—typically provide two years of personal and business tax returns, and underwriters look closely at year-over-year trends. Read more in our guide to self-employed mortgages in Massachusetts.
Examples: Conforming or Jumbo?
The examples below are arithmetic illustrations using the 2026 FHFA limits, not market price averages.
| Home | Price | Down payment | Loan amount | Limit | Result |
|---|---|---|---|---|---|
| Middlesex single-family | $1,200,000 | 20% ($240,000) | $960,000 | $962,550 | High-balance ($2,550 under) |
| Middlesex single-family | $1,200,000 | 15% ($180,000) | $1,020,000 | $962,550 | Jumbo ($57,450 over) |
| Norfolk two-family | $1,400,000 | 20% ($280,000) | $1,120,000 | $1,232,250 (2 units) | High-balance (under the 2-unit limit) |
| Worcester single-family | $925,000 | 10% | $832,500 | $832,750 | Standard conforming ($250 under) |
| Worcester single-family | $1,000,000 | 10% ($100,000) | $900,000 | $832,750 | Jumbo ($67,250 over) |
| Nantucket single-family | $2,000,000 | 25% ($500,000) | $1,500,000 | $1,249,125 | Jumbo ($250,875 over) |
Down payment size can flip the loan type. On the $1,200,000 Middlesex single-family home, adding $57,450 to the 15% down payment—for a total of $237,450, or roughly 19.79% down—brings the loan amount to $962,550 and keeps the mortgage in the high-balance tier.
Unit count changes the ceiling just as quickly. A $1,120,000 loan would be a jumbo mortgage on a single-family home in Norfolk County, but on a two-family property it sits more than $112,000 below the $1,232,250 two-unit cap and stays conforming.
County lines matter too. The $900,000 loan in Worcester County is $67,250 over the $832,750 baseline limit and requires a jumbo loan, while that exact same $900,000 loan would be a conforming high-balance mortgage across the county line in Middlesex.
On Nantucket, where HUD's median sale price is $2,375,000, many purchases require a jumbo mortgage even with a large down payment.
Check Your Massachusetts Jumbo Loan Eligibility
If Your Loan Is Just Over the Limit
If your target price leaves your loan $20,000 to $75,000 over your county's conforming limit, you can compare three routes side by side rather than guessing which works best.
- Put a bit more down to hit the cap: Move some cash from reserves into the down payment to bring the loan to $962,550 (or $832,750 in a baseline county), keeping in mind the post-closing reserves your lender still requires.
- Use a piggyback second mortgage: A first mortgage at the conforming limit paired with a smaller second loan can bridge the gap, though availability and terms vary by lender.
- Price high-balance against jumbo: A borrower with a 760+ score, low DTI, and strong reserves may find a jumbo program just as good. A broker can price both across multiple wholesale lenders to compare payment, cash to close, and reserves.
Next Steps
Before you write an offer, check whether your target price and down payment put you in standard conforming, high-balance, or jumbo territory.
Make Massachusetts Your Home is operated by Next Wave Mortgage, LLC, a mortgage broker that compares loan options across multiple wholesale lenders. Starting a check takes no hard credit pull, pre-approval typically takes 1 to 3 business days once your documents are in, and you can book a free 15-minute call with a loan officer.
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