Student Loan Calculators

Autopay Discount Savings Calculator

Calculate total interest savings over the life of a student loan from enrolling in an autopay interest rate discount.

Biweekly Student Loan Payment Calculator

Calculate how switching from monthly to biweekly student loan payments effectively adds one extra full payment per year.

Deferment Interest Calculator

Calculate how much interest accrues on a subsidized or unsubsidized student loan during a deferment or forbearance period, and the balance after capitalization.

Extra Payment Payoff Time Calculator

Calculate how many months sooner a student loan will be paid off by adding an extra amount to the standard monthly payment.

Federal vs Private Loan Calculator

Compare federal and private student loan offers on monthly payment and total interest cost over the full loan term before weighing borrower protections.

Income-Driven Repayment Calculator

Estimate your monthly federal student loan payment under the SAVE, PAYE, IBR, or ICR plans based on income, family size, and the 2024 HHS poverty guidelines.

Loan Consolidation Calculator

Combine multiple federal student loans into one weighted-average interest rate, rounded up to the nearest 1/8 percent, and see the new monthly payment.

Loan Forgiveness Calculator

Track qualifying payments toward Public Service Loan Forgiveness and project your remaining loan balance at 120 payments using real amortization math.

Minimum Payment Interest Cost Calculator

Calculate the total interest paid and time to payoff when making only the minimum required student loan payment.

PSLF Qualifying Payments Calculator

Track progress toward Public Service Loan Forgiveness based on qualifying payments made out of the required 120.

Student Loan Capitalized Interest Calculator

Calculate the new loan balance after unpaid interest capitalizes onto the principal following a deferment or forbearance period.

Student Loan Debt-to-Income Calculator

Calculate what percentage of gross monthly income goes toward student loan payments to assess debt burden.

Student Loan Grace Period Calculator

Estimate when your first student loan payment will be due based on graduation date and standard grace period length.

Student Loan Interest Calculator

Calculate daily accrued interest on a student loan using the same simple daily-rate formula servicers apply during grace periods, deferment, and forbearance.

Student Loan Interest Tax Deduction Calculator

Estimate potential tax savings from the student loan interest deduction based on annual interest paid and marginal tax rate.

Student Loan Payment Calculator

Calculate the fixed monthly payment on a student loan from the principal, interest rate, and term in years using the standard amortization formula.

Student Loan Payoff Calculator

Calculate exactly how many years and months until your student loan is paid off based on balance, interest rate, and monthly payment, plus total interest owed.

Student Loan Payoff vs. Invest Calculator

Compare student loan interest rate against expected investment return to see which strategy may offer better long-term value.

Student Loan Refinance Calculator

Compare your current student loan against a refinance offer side by side on monthly payment and total interest paid to see the real dollar impact clearly.

Total Cost of Student Loan Calculator

Calculate the full lifetime cost of a student loan, including total interest paid and interest as a percentage of principal, across different repayment terms.

Same Debt, Very Different Repayment Paths

Student loan repayment is not one fixed path — standard, income-driven, and refinanced repayment plans trade off monthly payment size against total interest and time very differently. These ten calculators compare those paths directly.

Disclaimer: These calculators are for informational and educational purposes only and do not constitute financial advice. Loan terms, forgiveness programs, and repayment plan rules change; verify current details with your loan servicer.

Standard vs Income-Driven Repayment

Total interest paid, standard 10-year plan versus a longer income-driven plan Standard 10-year plan: lower total interest, higher monthly payment. Income-driven plan over 20-25 years: lower monthly payment, but typically more total interest paid over the longer term. Lower total interest Standard (10 years) Higher total interest Income-driven (20-25 years)
Income-driven plans lower the monthly payment but typically extend the payoff timeline and total interest paid, sometimes offset by forgiveness of a remaining balance after 20-25 years depending on the specific program. Calculated with the Income-Driven Repayment Calculator.

Neither path is universally better — a standard plan minimizes total cost for someone who can afford the higher payment, while an income-driven plan protects monthly cash flow at the cost of paying more over time (partially offset if a balance is eventually forgiven). Compare both with the Income-Driven Repayment Calculator.

Popular Student Loan Calculators

  • Loan Forgiveness Calculator — estimates remaining balance forgiven under a qualifying program after the required payment period.
  • Student Loan Refinance Calculator — compares current loan terms against a refinance offer's rate and term.
  • Federal vs Private Loan Calculator — compares total cost and protections between federal and private loan types.

Related: College Planning Calculators, Scholarship Calculators.