Student Loan Calculator

Federal and private student loans repay over 10-25+ years depending on plan. Enter balance, APR, and term—or target payment—to see amortization, total...

Modify the values and click the Calculate button to use.
Results

Enter values and click Calculate.

Schedule

Introduction

Federal and private student loans repay over 10-25+ years depending on plan. Enter balance, APR, and term—or target payment—to see amortization, total interest, and payoff timeline.

Student Loan Repayment

Federal and private student loans repay over 10-25+ years depending on plan. Enter balance, APR, and term—or target payment—to see amortization, total interest, and payoff timeline.

Federal Repayment Plans

Standard plans use fixed payments over 10 years. Income-driven plans cap payments at a percentage of discretionary income and may forgive remaining balance after 20-25 years—often with tax implications on forgiven amounts.

Subsidized vs Unsubsidized

Subsidized federal loans do not accrue interest during eligible deferment; unsubsidized loans accrue from disbursement. Capitalized interest increases balance when deferment ends.

Refinancing

Private refinance can lower APR for strong credit but forfeits federal protections (IDR, forgiveness, deferment). Model break-even carefully.

How It Works

  1. Enter your amounts, rates, and term in the form. Use the same units shown in the labels (dollars, years, percent).
  2. Click Calculate to run the Student Loan Calculator engine. Invalid or empty required fields show a clear error message.
  3. Review the summary cards for the key outputs. Expand schedules or tables when available for period-by-period detail.
  4. Copy, print, or share your scenario link. Reset the form anytime to start a fresh comparison.

Formula

Monthly payment (amortizing loan): M = P * [r(1+r)^n] / [(1+r)^n - 1], where P is principal, r is monthly rate (APR/12), and n is number of months.

FAQ

Yes. CDCalculator.io provides the Student Loan Calculator at no charge for personal and educational use. Results are estimates and not financial advice.

The tool uses standard formulas lenders and planners use in spreadsheets. Your bank may round differently or include fees not modeled here.

Use the Copy Results and Print buttons on the calculator panel after you run a scenario. You can also share the page link with colleagues.

Focus on realistic rates, terms, and any extra payments or contributions. Small changes in APR or time horizon often move outcomes more than rounding.

No. Use this calculator to explore scenarios, then consult a qualified advisor or lender for decisions about other financial products.