Understanding how do medical school loans work is one of the most practical things you can do before committing to four years of medical education. For the class of 2023, roughly 69% of medical school graduates carried education debt, with a median of $200,000 for those who borrowed, according to the AAMC’s data on medical school graduation questionnaire results. Those numbers deserve more than a shrug. They deserve a clear explanation of how the borrowing, interest, and repayment process actually works, step by step.
This guide is for pre-med students, current applicants, and early medical students who want a straightforward picture of the loan timeline. Not a vague overview, but a concrete walkthrough of what happens at each stage: when money arrives, when interest starts, what happens during residency, and what repayment actually looks like. If you are comparing the full landscape of borrowing options, costs, and strategies, you will also want to read our complete 2026 guide to medical school loans, which covers the broader picture in detail.
Step 1: Determining How Much You Need to Borrow
Before any loan is disbursed, you need to understand the cost of attendance at your specific school. This figure includes tuition, fees, and estimated living expenses such as housing, food, transportation, books, and personal costs. For the 2023-2024 academic year, the AAMC reported that median four-year cost of attendance was approximately $268,477 for in-state public medical schools and $379,150 for private medical schools. Your actual number will depend on where you attend, whether you qualify for in-state tuition, and how you manage your living expenses.
Financial aid offices at medical schools will provide a cost of attendance estimate as part of your financial aid package. That estimate is important because it sets the maximum amount you can borrow in federal student loans for medical school each year. Borrowing up to that ceiling is common, but it is not mandatory. Every dollar you borrow will accrue interest, so budgeting carefully at this stage can meaningfully reduce your total debt by the time you finish training.
A practical step here is to separate fixed costs (tuition and fees, which you cannot change) from variable costs (housing, food, transportation, which you can influence). Students who track spending from the start tend to borrow less overall.
Step 2: Federal Loan Types Available to Medical Students
Medical students primarily borrow through two federal loan programs: Direct Unsubsidized Loans and Direct Grad PLUS Loans. Understanding the differences between them is essential.
Direct Unsubsidized Loans
These are available to all medical students regardless of financial need. The annual borrowing limit for graduate and professional students is $20,500. Interest rates are set by Congress each year and are fixed for the life of the loan. Critically, “unsubsidized” means the government does not pay the interest while you are in school. Interest begins accruing from the day the loan is disbursed.
Direct Grad PLUS Loans
Once you have maxed out your Direct Unsubsidized Loan for the year, Grad PLUS Loans can cover the remaining cost of attendance. These loans require a credit check (though the standard is not as strict as a private lender’s), and they carry a higher interest rate and a higher origination fee than Direct Unsubsidized Loans. Like unsubsidized loans, interest accrues from disbursement. The federal student aid office’s page on loan types provides current rates and origination fees for each program.
Why Federal Loans Come First
Federal student loans for medical school offer protections that private loans typically do not: access to income-driven repayment plans, potential eligibility for Public Service Loan Forgiveness, deferment and forbearance options, and fixed interest rates. Most financial advisors and medical school financial aid offices recommend exhausting federal options before considering private loans.
Step 3: Disbursement, Interest Accrual, and Capitalization During School
Once your loans are approved, funds are disbursed directly to your medical school, usually at the beginning of each semester or term. The school applies the funds to tuition and fees first. Any remaining balance is refunded to you for living expenses.
Here is where many students get surprised. From the moment those funds are disbursed, interest starts accruing on both Direct Unsubsidized and Grad PLUS Loans. You are not required to make payments while enrolled at least half-time, but the interest does not pause. Over four years, this adds up significantly.
At the end of your grace period (more on that below), all the interest that has accrued during school is “capitalized,” meaning it is added to your principal balance. You then owe interest on a larger amount going forward. For example, if you borrowed $200,000 over four years and $30,000 in interest accrued during that time, your new principal balance at the start of repayment would be $230,000. All future interest would be calculated on that higher number. The federal student aid office’s explanation of how interest works spells out this process clearly.
This is one of the most misunderstood aspects of how do medical school loans work. Some students assume they owe exactly what they borrowed. In reality, capitalization can add tens of thousands of dollars to your total balance before you make your first payment.
One option to reduce capitalization: make interest-only payments during school if you can afford to. Even small payments can limit the growth of your balance. Not every student can do this, but it is worth knowing the option exists.
Step 4: The Grace Period After Graduation
After you graduate from medical school or drop below half-time enrollment, most federal loans enter a six-month grace period. During this time, you are not required to make payments. However, interest continues to accrue on your unsubsidized and Grad PLUS loans throughout the grace period.
For most medical school graduates, this grace period coincides with the transition from graduation (typically in May or June) to the start of residency (typically in late June or July). In practical terms, you are starting residency and earning a salary by the time payments come due.
It is worth noting that the grace period is not a reset. It is simply a window before your repayment schedule begins. Interest that accrues during the grace period will also capitalize at the end of that period, further increasing your principal. Students who understand this timeline can plan accordingly rather than being caught off guard.
Step 5: Residency and Choosing a Repayment Plan
Residency is where the financial picture gets real. You are now a working physician, but your salary is far lower than what you will eventually earn as an attending. Resident salaries vary, but they are modest relative to the debt most graduates carry. This mismatch between income and debt is why repayment plan selection matters so much during residency.
Standard Repayment
Under the Standard Repayment Plan, you make fixed monthly payments over 10 years. For someone with $230,000 in debt, those monthly payments can be well over $2,000, which is often unmanageable on a resident’s salary.
Income-Driven Repayment Plans
Most residents choose an income-driven repayment (IDR) plan, which calculates your monthly payment based on your income and family size rather than your total balance. Several IDR plans exist, including SAVE (Saving on a Valuable Education), PAYE (Pay As You Earn), and IBR (Income-Based Repayment). Under these plans, payments during residency are substantially lower, sometimes a few hundred dollars per month or even zero, depending on your income and family size.
The trade-off is that lower payments during residency mean interest continues to accrue, potentially increasing your total cost over the life of the loan. However, IDR plans also qualify borrowers for loan forgiveness after 20 or 25 years of payments, and those who work for qualifying nonprofit or government employers may be eligible for Public Service Loan Forgiveness (PSLF) after 10 years of qualifying payments.
Choosing a repayment plan is not a one-time decision. You can switch plans as your income changes, and it is worth revisiting your strategy after residency when your attending salary begins. If you want to see how different plans and timelines affect your total payments, the Student Loan Repayment Calculator can help you model specific scenarios based on your projected balance and income.
Step 6: Entering Full Repayment as an Attending Physician
Once you finish residency or fellowship and begin practicing as an attending physician, your income typically increases substantially. At this point, your repayment strategy should be revisited. Many physicians switch from an IDR plan to aggressive repayment, paying off loans as quickly as possible to minimize total interest. Others continue on an IDR plan and pursue PSLF if they work in eligible settings. Some refinance federal loans into private loans at lower interest rates, though this means giving up federal protections like IDR eligibility and PSLF.
There is no single correct approach. The right strategy depends on your total balance, interest rate, income, career setting (academic, private practice, government), family situation, and financial goals. What matters most is making an active, informed decision rather than defaulting to whatever plan you started on during residency.
Why Financial Literacy Matters Before Medical School, Not After
One of the most useful things you can do as a pre-med is to understand the financial mechanics of medical education before you enroll, not after you are already borrowing. Students who enter medical school with a clear picture of how student loans for medical school work tend to borrow more carefully, budget more effectively, and feel less overwhelmed during training.
If you are still in the pre-med stage, this is also the time to confirm that medicine is genuinely the right path for you. The financial commitment is significant, and being sure about your direction matters. Many students find that learning from those already in medical school about what they wish they had known helps them prepare more realistically. Others find that building a strong medical school application with real clinical exposure helps them feel confident that the investment is worth it.
Financial planning and career planning are not separate tasks. They reinforce each other. The better you understand both, the more grounded your decisions will be.
Frequently Asked Questions
Does interest on medical school loans stop while I am in school?
No. Interest on Direct Unsubsidized Loans and Grad PLUS Loans accrues from the day the money is disbursed, even while you are enrolled full-time. You are not required to make payments during school, but the interest accumulates and is eventually added to your principal balance through a process called capitalization.
Should I use federal loans or private loans for medical school?
Federal loans should almost always come first. They offer fixed interest rates, access to income-driven repayment plans, deferment and forbearance options, and potential eligibility for Public Service Loan Forgiveness. Private loans typically have fewer protections and may carry variable interest rates. Most financial aid offices recommend borrowing privately only after federal options are fully used.
What repayment plan should I choose during residency?
Most residents benefit from an income-driven repayment plan such as SAVE, PAYE, or IBR, because these plans base your monthly payment on your income rather than your total balance. This keeps payments manageable during the years when your salary is relatively low. You can switch plans later when your income increases, and payments made under IDR plans may count toward Public Service Loan Forgiveness if you work for a qualifying employer.
