Doctor mortgages explained: when they help and when they hurt

A physician mortgage can put you in a $700,000 house with $0 down, no private mortgage insurance, and an approval based on an employment contract you signed before your first attending paycheck cleared. That is a genuinely useful product — and it is also the single easiest way for a new attending to lock in a housing payment that quietly eats the income jump you spent eleven years earning. The difference between those two outcomes is not the loan. It is how you use it.

Most of what you will read about doctor loans is written by people paid when you close one. Loan officers are not lying to you — the features they advertise are real — but they have no incentive to show you the cases where a conventional loan, or simply waiting a year, leaves you tens of thousands of dollars ahead. This article is the counterweight: what physician mortgages actually do, the math on both sides, and a clean framework for deciding.

What a physician mortgage actually is

A physician mortgage (also sold as a "doctor loan" or "early-career professional loan") is a portfolio loan — the bank keeps it on its own books instead of selling it to Fannie Mae or Freddie Mac. Because the bank is not bound by conforming-loan underwriting rules, it can write its own. Banks created these programs because physicians are statistically excellent credit risks: high, stable, rising incomes and very low default rates, even with ugly debt-to-income ratios on paper.

The defining features, consistent across most lenders:

• 0% down up to $750K–$1M at most lenders. Above that, tiered structures are common (for example 5% down to $1.25M, 10% to $2M). The exact ceilings vary by bank.
• No PMI at any down payment level. On a conventional loan with less than 20% down, private mortgage insurance typically runs roughly 0.5%–1.5% of the loan balance per year and protects the lender, not you. Physician loans waive it entirely.
• Qualification on a signed employment contract. Most programs will close a loan 60–90 days before your start date with no pay stubs — the contract is the income documentation. This is the feature with no conventional equivalent.
• IDR-aware student loan treatment. Conventional underwriting often counts your federal loans at a percentage of the balance (commonly 0.5%–1% per month) when calculating debt-to-income. On $300,000 of loans, that can be a phantom $1,500–$3,000 monthly "payment" that disqualifies you. Physician loan programs typically use your actual income-driven repayment amount — or exclude deferred loans entirely.

Eligibility usually covers MDs and DOs, and many programs extend to dentists, and some to podiatrists and veterinarians. Most lenders limit the product to primary residences — no investment properties — and some restrict it to physicians within ten years of training. These programs live at a few dozen regional and national banks, not at every mortgage shop, so you have to seek them out; a broker who works with physicians regularly can quote several at once.

One structural detail to watch: a meaningful share of physician loans are offered as adjustable-rate mortgages (ARMs) — 7/1 or 10/1 structures where the rate is fixed for the first seven or ten years and floats afterward. An ARM is not automatically bad; if you are confident you will sell or refinance within the fixed period, the lower initial rate can win. But compare fixed to fixed and ARM to ARM, and never accept an ARM just because it makes the payment look closer to the conventional quote.

What you give up in exchange: the rate. Physician loans generally price somewhat above comparable conventional loans, and the spread varies by lender, credit profile, and rate environment — get quotes for both products on the same day rather than trusting any published number.

When a doctor loan genuinely helps

You have a better use for the down payment cash. This is the core case. A new attending with $250,000 of student loans at 6.8%, no emergency fund, and unfilled retirement accounts has several uses for $120,000 that beat home equity. Home equity earns you nothing until you sell or borrow against it; it is the least accessible dollar you own. Paying 6.8% debt is a guaranteed 6.8% return. Filling a 401(k) up to the 2026 $24,500 employee deferral limit saves roughly $7,800 in federal tax at a 32% marginal rate before the money even starts compounding.

You are buying before your start date. If you finish residency in June and start your attending job in August, conventional underwriting wants pay stubs you do not have. Contract-based qualification means you can close in July and move once instead of paying for a rental, a second move, and six months of limbo. For families relocating across the country, this is the feature that justifies the product by itself.

Your student loans break conventional DTI math. A pediatrician earning $210,000 with $350,000 in federal loans may show a debt-to-income ratio above 43% under conventional rules that impute 1% of the balance as a monthly payment — even though her actual IDR payment is $900/month. The physician loan underwrites the real number. Same physician, same finances, different arithmetic.

You want to avoid PMI without the 20%. A conventional loan with 5% down gets you in the door too — but with PMI layered on top. The physician loan's no-PMI feature means a low-down-payment purchase does not carry that extra drag.

When a doctor loan hurts

The rate premium compounds for decades. Whatever the spread is on the day you shop, you pay it on the entire balance for as long as you hold the loan. On a $700,000 mortgage, each 0.25% of rate is roughly $115 per month early in the loan — about $1,400 per year. Hold the loan ten years and a half-point premium costs you on the order of $25,000–$30,000 in extra interest. The standard counterargument is "refinance later," which works only if rates cooperate, your home appraises well, and you actually do it. Many physicians never do.

0% down means starting underwater after transaction costs. Selling a home costs roughly 7–9% of the price once you count agent commissions, transfer taxes, and concessions. Put nothing down and sell within three or four years and you will likely write a check at closing. This matters enormously because new attendings change jobs at high rates in their first few years — the first job frequently is not the last job. A 0% down purchase is a bet that you will stay put.

It enables overbuying. The 20% down requirement on conventional loans is crude, but it forces a savings discipline that caps what you can buy. Remove it and the only constraint left is the lender's generosity, which is considerable. A useful guardrail: keep the total purchase price at or below 2x gross household income, and keep the full housing cost — principal, interest, taxes, insurance, maintenance — under 20% of gross. A doctor loan will happily let you blow through both.

You buy during the contract window, before living on the income. The same feature that lets you close before your first paycheck also lets you commit to a payment before you have ever experienced your attending take-home. A $320,000 contract sounds like roughly $26,700 a month; after federal and state tax, a $24,500 retirement deferral, disability premiums, and a $2,800 IDR payment, the deposit that actually lands might be closer to $15,000. Physicians who buy off the gross number routinely discover the house consumes a third more of their real income than they modeled. There is a strong argument for renting the first 6–12 months in a new job: you learn the take-home, the commute, the schools, and whether the job itself is what was promised — before signing a 30-year commitment in a city you may want to leave.

You actually have the 20% and no better use for it. If your loans are forgiven or refinanced cheap, your retirement accounts are on pace, and you hold ample cash, the doctor loan is solving a problem you do not have. Take the conventional rate.

The worked comparison

Assumptions, stated explicitly so you can swap in your own: a new attending buys a $600,000 home. Illustrative rates — not quotes — of 6.5% on a 30-year conventional loan and 6.875% on a 30-year physician loan, a 0.375% spread. Conventional requires 20% down ($120,000); the physician loan requires $0. Both exclude taxes and insurance, which are identical either way.

The honest summary of the math: the doctor loan wins when the freed-up cash goes to work at a return above the mortgage rate — high-interest debt, tax-advantaged retirement space, a real emergency fund. It loses when the cash just sits, or when the bigger approval becomes a bigger house.

One more comparison worth running before you commit: conventional with 5%–10% down plus PMI. Sometimes the all-in cost of a low-down conventional loan with PMI beats the physician loan rate premium; sometimes it does not. It is lender-specific and rate-environment-specific, so price all three on the same day. PMI on low-down conventional loans commonly runs about 0.5%–1.5% of the loan amount per year depending on down payment and credit score — but the quote in front of you, not the rule of thumb, is what decides it.

How to shop one without getting steered

Physician loan pricing varies between banks more than conventional pricing does, because each bank sets its own portfolio terms. Three rules:

1. Get at least three physician-loan quotes and one conventional quote, same day. Rates move daily; quotes from different days are not comparable.
2. Compare APR and total cost, not just rate. Some programs offset a teaser rate with higher origination fees or require you to move banking relationships.
3. Confirm there is no prepayment penalty. Most physician loans have none — which preserves the option to refinance into a conventional loan later once you have equity and pay history. Verify it in writing.

Also ask how the loan treats your student loans explicitly. "IDR payment as documented" and "excluded if deferred 12+ months" are materially different policies, and the answer determines whether you qualify at all.

Common questions

Do physician mortgages have higher interest rates than conventional loans?

Typically yes, by a modest spread that varies with the lender and the rate environment — and occasionally a bank running a physician-program promotion will match or beat conventional pricing. Never assume the spread; price both products on the same day and compare APRs.

Can residents get physician mortgages?

Many programs include residents and fellows, though often with lower maximum loan amounts. Whether a resident should buy is a different question: a 3-year residency plus 7–9% transaction costs on exit makes buying a coin flip at best in most markets. The shorter your guaranteed time in the city, the worse the math.

Does a physician loan affect PSLF or my IDR strategy?

No — your mortgage and federal student loans do not interact directly. But indirectly, yes: a large housing payment can crowd out the cash flow you need for the rest of the plan. If you are pursuing PSLF, your IDR payment is income-driven, not budget-driven, so the mortgage will not change it — but everything else in your financial life has to fit around both.

Can I refinance out of a physician loan later?

Usually, and most carry no prepayment penalty (confirm in writing). Once you have 20%+ equity and two years of attending income, you can refinance into conventional pricing if rates make it worthwhile. Treat refinancing as a possibility, not a plan — buy as if the rate you sign is the rate you keep.

Is 0% down ever a bad idea even if I qualify?

Yes, when job stability is uncertain. With nothing down, you need roughly 7–9% of appreciation just to break even at sale. If there is a realistic chance you leave the job — or the city — within three years, rent.

What to do next

1. Decide the house budget before talking to any lender. Anchor on roughly 2x gross income for price and under 20% of gross for full housing cost — then treat lender approvals as irrelevant noise above that line.
2. Inventory competing uses for your would-be down payment: high-rate student loans, 401(k)/403(b) space ($24,500 employee deferral in 2026), backdoor Roth, HSA, 3–6 month emergency fund. Rank by after-tax return.
3. Collect same-day quotes: three physician-loan lenders, one conventional, and one low-down conventional with PMI. Compare APR and 10-year total cost, not the monthly payment.
4. Confirm in writing: no prepayment penalty, how IDR student loan payments are treated, and the exact down payment tier for your price point.
5. Stress-test the payment against your actual first-year attending take-home — not your gross. Federal and state tax, retirement deferrals, and loan payments come out first.

If you have not yet seen what your attending contract actually nets per month, run it through the paycheck decoder before you commit to a payment — the gap between a $300,000 salary and the deposit that hits your account is exactly the gap that turns a comfortable mortgage into a tight one.