Debt-to-Income (DTI) Ratio
Lenders use this number to approve your mortgage. Physician loans may exclude student debt from this calc.
Monthly Finances
Great! You look very safe to lenders.
Most conventional mortgages cap at 43% DTI. Physician loans can often go up to 50% or exclude IBR student loan payments entirely.
Clinical Context & Calculation Details
How to Use This Calculator
Input your gross monthly income (before taxes), your estimated future mortgage or rent payment, your monthly student loan payments, and any other monthly debt obligations (car loans, credit cards, etc.).
The tool calculates your Debt-to-Income (DTI) ratio, a key metric used by lenders to determine how much house you can afford.
Why Doctors Need This
When applying for a physician mortgage loan, your DTI is the most critical factor alongside your credit score. If your DTI is too high, you simply cannot get the loan, regardless of how much you earn.
Physicians often graduate with massive debt, but specialized loan products cater to this by calculating DTI differently than conventional lenders.
The Math Behind It
DTI Ratio: (Total Monthly Debt Payments / Gross Monthly Income) × 100.
Conventional loans generally hard-cap DTI at 43% to 50%. Physician mortgage lenders will often allow higher DTI ratios specifically for doctors.
Pearls & Pitfalls
- Pearl: Many physician mortgage lenders allow you to exclude your student loans from the DTI calculation if they are in deferment, forbearance, or an Income-Driven Repayment (IDR) plan like SAVE.
- Pearl: Pay off small debts (like a $200/mo car payment) before applying. Getting rid of a $200 monthly obligation frees up significant borrowing power for your house.
- Pitfall: Assuming you *should* borrow the maximum amount you qualify for. Just because a bank approves you for a $1.5M loan doesn't mean your budget can handle the payments.
Related Clinical Finance Tools
Editorial Credibility
J.R. Dunigan, DO | Family Medicine Physician & Founder
I founded MedMoneyGuide to provide physicians with unbiased, specialty-specific financial guidance. My goal is to add transparency and credibility to your financial journey.
Frequently Asked Questions
What DTI is required for a physician mortgage?
Physician mortgage programs often allow for a DTI up to 45% or even 50%, and critically, they often exclude deferred student loans or use IBR payments in the calculation.
How do student loans affect my DTI?
In standard underwriting, lenders use 1% of your total loan balance as your monthly payment, which disqualifies many residents. Physician loans use your actual IDR payment instead.