Should You Pay Off Student Loans or Invest First as a Resident

With limited income and massive debt, residents face a real tradeoff. Here is how to think through it based on your loan type, employer, and long-term plan.

The Numbers That Drive the Decision

The pay-off-debt-versus-invest question comes down to interest rates and expected returns. Federal student loans for medical residents typically carry rates between 6 and 8 percent depending on when they were borrowed. The long-run expected return of a diversified equity portfolio is roughly 7 to 10 percent annually, but that return is uncertain in any given period. On paper, the comparison is close enough that other factors - your loan type, your employer, and your repayment plan - often matter more than the pure math.

On a resident salary, you usually cannot do both aggressively. The real question is how to allocate a limited surplus after covering basic living expenses and required minimum payments. The answer is different depending on whether you are pursuing PSLF, planning to refinance, or on a path to private practice.

If You Are Pursuing PSLF - Do Not Overpay Your Loans

If you work at a qualifying nonprofit or government employer - which includes most academic medical centers and many hospital systems - and you are on track for Public Service Loan Forgiveness, overpaying your federal loans during residency is one of the most expensive mistakes you can make. Every extra dollar you put toward loans beyond your required income-driven repayment amount is a dollar that will never be forgiven.

Under PSLF, 120 qualifying monthly payments on an income-driven plan result in full forgiveness of your remaining federal loan balance, tax-free. On a $300,000 loan balance, that forgiveness can be worth $200,000 or more after payments made during residency and fellowship. The financially correct move for a PSLF-eligible resident is to make the minimum qualifying payment, submit annual employment certification, and redirect any surplus toward a Roth IRA or emergency fund instead.

Confirm your employer qualifies before assuming PSLF applies to you. Use the PSLF Help Tool at studentaid.gov to check employer eligibility and submit your Employment Certification Form annually - not just at the end. Annual certification catches problems early and keeps your qualifying payment count accurate.

If You Are Not Pursuing PSLF - The Calculus Changes

Residents heading toward private practice or who have private loans are not PSLF candidates. For these residents, the decision is more purely financial. If your federal loan rates are at or above 7 percent, paying them down modestly faster than the minimum while also contributing to a Roth IRA is a reasonable balanced approach. If your rates are below 6 percent, prioritizing Roth IRA contributions over extra loan payments generally makes sense given the long investment horizon ahead.

Private student loans complicate things further. Unlike federal loans, private loans do not qualify for income-driven repayment or PSLF, and rates are often higher and variable. If you have private loans at rates above 8 percent, those deserve more aggressive attention than federal loans during residency. Refinancing private loans to a lower rate can free up cash flow, though you should never refinance federal loans during residency if PSLF is even a possibility - refinancing converts them to private loans and eliminates that option permanently.

What to Do With Any Remaining Surplus

After covering minimum loan payments and essential expenses, any surplus in residency should generally go in this order: a small emergency fund of two to three months of expenses, a Roth IRA if you are eligible based on income, and then additional loan payments or a taxable brokerage account depending on your strategy.

The Roth IRA is particularly valuable during residency because your income - and therefore your tax rate - is lower now than it will ever be as an attending. Contributions made at a 22 percent effective tax rate that grow tax-free for 30 or 40 years are worth considerably more than the same contributions made later at a 35 or 37 percent rate. Residency is one of the few windows in a physician career where Roth contributions are both accessible and highly tax-efficient.