Student Loan Payoff Calculator – Time and Interest
Calculate how long to pay off student loans and total interest paid at any payment amount.
About This Calculator
Calculate how long to pay off student loans and total interest paid at any payment amount. Use the calculator above for instant results.
Worked Examples
- Payoff: 11.4 years | Interest: $21,600
Answer: 11.4 years / $21,600 interest
- Payoff: 7.4 years | Interest: $6,148
Answer: 7.4 years / $6,148 interest
- Adding $100/month to $40K at 6%: saves ~4 years and $8,000
Answer: Save years with extra payments
Who Uses This Calculator?
Know your payoff timeline.
Plan loan repayment budget.
Show students loan cost impact.
Include loans in client planning.
Common Mistakes to Avoid
❌ Paying minimum only
On income-driven repayment, minimum payments may not cover interest. Balance grows. Understand your plan.
❌ Ignoring refinancing
Refinancing federal loans to private loses protections (forgiveness, IDR, forbearance) but can save money at lower rates if stable income.
Frequently Asked Questions
Federal vs private loans?
Federal: income-driven repayment, forgiveness programs, deferment/forbearance, fixed rates. Private: potentially lower rates, no federal protections.
Public Service Loan Forgiveness?
After 120 on-time payments on IDR while employed full-time at qualifying nonprofit/government. Tax-free forgiveness.
How to pay off faster?
Pay more than minimum, apply raises/bonuses to loans, refinance if rate is high and you don't need federal protections.