Fannie Mae Just Clarified the DTI Break for Debts Someone Else Pays. Physicians, Here's What You Now Have to Prove

If your parents have been paying your private medical school loan, or your practice covers your car lease, or an ex-spouse pays the mortgage on a house you're still on the note for, there is a rule that can remove that payment from your debt-to-income ratio entirely. It has existed for years. Most physicians have never heard of it.

Fannie Mae just clarified how it works. Selling Guide Announcement SEL-2026-07 took effect August 5, 2026, and among its revisions is a tightened statement of what lenders must collect before excluding "debts paid by others" from your recurring monthly obligations — plus a clarification on how authorized user tradelines are treated on files underwritten through Desktop Underwriter.

This is worth ten minutes of your attention, because the exclusion is one of the largest DTI levers available to a physician buyer, and the documentation it requires is the kind you cannot produce on short notice.

What the rule actually says

Under Selling Guide section B3-6-05, two separate exclusions exist.

For non-mortgage debt: if you are obligated on the debt but you are not the party actually repaying it, the lender may exclude that monthly payment from your DTI. This applies whether or not the other party is also legally obligated on the debt. The enumerated categories are broad and include installment loans, student loans, revolving accounts, lease payments, alimony, child support, and separate maintenance.

There is one hard exclusion: the person paying cannot be an interested party to your transaction. The seller, your real estate agent, or the builder paying your car note does not count.

For mortgage debt: if you are obligated on a mortgage but someone else pays it, the lender may exclude the entire monthly housing expense — principal, interest, taxes, insurance, and association dues. But this one carries three conditions. The party making the payments must be obligated on the mortgage debt themselves. There can be no delinquencies in the most recent twelve months. And you cannot be using rental income from that property to qualify.

That first condition is where physicians get caught. If your parents informally pay the mortgage on a condo that is in your name alone, the exclusion is not available, because they are not on the note.

The part that will actually slow you down

Here is the operative sentence. To exclude either type of debt, the lender must obtain the most recent twelve months of canceled checks or bank statements from the other party making the payments, documenting a twelve-month payment history with no delinquent payments.

Read that again: not your bank statements. Theirs.

You are going to have to ask your mother, or your father, or your former spouse, for a year of their bank statements — and then hand those statements to a mortgage lender. That is an awkward conversation, and it is not one you want to be having on day nineteen of a thirty-day underwriting window while your rate lock burns.

It is also a conversation with a hard prerequisite you cannot manufacture: the twelve-month history has to already exist, and it has to be clean. If your parents started covering your loan payment four months ago, the exclusion is simply not available to you yet. If they paid late twice last spring, it may not be available at all.

There is a second wrinkle worth knowing. Even when someone else pays a mortgage you are obligated on, the property still counts toward your total number of financed properties. The payment comes out of your DTI; the property does not disappear from your file.

What this means for a physician mortgage specifically

An honest caveat first: most physician mortgage programs are portfolio products. The lender keeps the loan on its own balance sheet rather than selling it to Fannie Mae, which means agency guidelines do not strictly bind them.

So why does this matter to you?

Three reasons. First, most physicians shopping a home loan are running a physician-loan-versus-conventional comparison, and this change moves the conventional side of that ledger. Second, a great many portfolio lenders use agency guidance as their baseline and layer overlays on top, so agency language tends to propagate. Third, plenty of physicians end up on a conventional loan anyway — when the physician program loses on rate, when the loan size pushes past program limits, or when the property type does not fit.

The scenarios where this exclusion is worth real money to a physician are specific and common:

• A parent paying a private medical school loan. With Grad PLUS eliminated, private loans are becoming a larger share of physician debt, and private loans carry no income-driven repayment option to soften the DTI hit. The "someone else pays it" exclusion may be the only lever available.
• A practice or hospital covering a vehicle lease. Lease payments are explicitly on the list and are counted regardless of months remaining, so excluding one is unusually valuable.
• A departing residence after a relocation or divorce. The full PITIA exclusion is genuinely large — but only if the person paying is on the note.

The authorized user question

SEL-2026-07 also clarified authorized user tradelines on files that receive a DU Approve/Eligible recommendation. The practical distinction has been that the Selling Guide's authorized-user requirements do not apply to loan casefiles underwritten through Desktop Underwriter; outside DU, a borrower generally has to document being the actual and sole payer on the account for the twelve months preceding application.

This is a residents-and-fellows issue. If you have a thin credit file and you are riding on a parent's card to prop up your score, whether that tradeline helps you depends on how your file is being underwritten. Ask.

What to do

If any version of "someone else pays one of my debts" describes your situation, raise it with your loan officer before you write an offer, not after. Ask two questions: does this lender allow the exclusion, and exactly whose statements do you need.

Then go ask for the statements early. The twelve months either exist or they don't — and that is the one variable no lender can waive for you.

MedPharmaConnect is an educational resource, not a lender. Always verify program details, current rates, and eligibility with licensed mortgage professionals.