Student Loan Calculator

Federal vs. Private Student Loans

Student loans come in two main varieties: federal and private. Federal student loans are offered by the U.S. Department of Education and come with significant borrower protections and flexible repayment options. They feature fixed interest rates set by Congress, currently ranging from 5.5% to 8.5% depending on the loan type. Federal loans include Direct Subsidized Loans, Direct Unsubsidized Loans, and PLUS Loans.

Private student loans, issued by banks and other lenders, often have lower interest rates for borrowers with excellent credit, but lack the federal protections that make student debt manageable. Private loans typically have variable or fixed rates based on creditworthiness, minimal deferment options, and no income-driven repayment plans. The average private student loan interest rate is 5% to 12%, depending on the borrower's credit profile.

Most people should exhaust federal loan options before turning to private loans, as the protections and flexibility are worth the potentially higher interest rates. However, if you have excellent credit and are borrowing for graduate or professional school, private loans might offer competitive rates worth considering.

Repayment Plans Explained

The Standard Repayment Plan is the default federal repayment option, with fixed monthly payments over 10 years. This plan results in the least total interest paid but may have higher monthly payments, making it challenging for borrowers with lower incomes. Most people paying the standard amount will be debt-free in 10 years.

Graduated Repayment extends the standard 10-year period but starts with lower payments that increase every two years. This is ideal for recent graduates who expect their income to grow over time. You'll still pay off loans in 10 years, but the trajectory of payments matches career progression.

Income-Driven Repayment plans (PAYE, REPAYE, IBR, ICR) cap monthly payments at a percentage of your discretionary income—typically 10-20%—making loans affordable regardless of balance. These plans extend repayment to 20-25 years, but remaining balances are forgiven tax-free after that period. For lower-earning graduates, this can mean paying far less than they borrowed.

Public Service Loan Forgiveness (PSLF)

If you work for a government agency or qualified nonprofit organization, you may be eligible for Public Service Loan Forgiveness. PSLF forgives remaining federal student loan balances after 120 qualifying monthly payments (10 years) while employed full-time in a qualifying position. This program is transformational for teachers, nurses, social workers, and government employees.

To qualify for PSLF, you must be on an income-driven repayment plan and submit an employment certification form annually. The forgiven amount is not considered taxable income. Recent policy changes have made PSLF more accessible, allowing temporary credit for past payments that didn't previously count. If PSLF is available to you, it often makes sense to minimize extra payments and let the forgiveness program work its magic.

Should You Refinance Your Student Loans?

Refinancing federal student loans into private loans can save money if you secure a lower interest rate, typically if you can drop 1-2% or more. However, this trade involves real risks. When you refinance into a private loan, you permanently lose access to federal protections: income-driven repayment plans, deferment and forbearance options, and Public Service Loan Forgiveness.

Refinancing makes sense if: (1) you have strong income and employment stability, (2) you're not eligible or planning to use PSLF, (3) you can secure a rate at least 1-2% lower than your current loans, and (4) you've already built a 3-6 month emergency fund. Refinancing typically doesn't make sense if you're early in your career, plan to use PSLF, or have variable income.

Many borrowers benefit from refinancing only their private loans or a portion of their federal loans, keeping some federal loans intact for their protections. This hybrid approach balances interest savings with risk management.

Extra Payments vs. Investing

The decision to make extra student loan payments versus investing the money depends on your interest rate and risk tolerance. At student loan interest rates of 6.5% or higher, paying extra on loans usually makes financial sense. You're guaranteed a "return" equal to the interest rate—effectively earning that rate by not paying interest. With variable market returns averaging 7-10% historically, it's close, but loans at 6%+ usually win mathematically.

For lower-interest loans (3-4%), the math favors investing. A diversified portfolio's historical 7% average return likely exceeds your 3% loan rate. However, investing involves market risk that loan payoff doesn't, so personal comfort matters.

The optimal strategy for most borrowers: (1) maximize your employer 401(k) match (guaranteed 50-100% return), (2) build a 3-6 month emergency fund, (3) pay minimums on low-rate loans while investing the difference, and (4) aggressively pay down high-rate debt. The psychological benefit of becoming debt-free also matters—there's real value in the peace of mind that comes with eliminating student loans.