Student Loan Calculator | Empowering Your Finance
Empowering Your Finance

Do You Know What
Your Student Loan
Really Costs?

Student Loan Calculator — Payment, Total Cost & Repayment Plans

Student loans are the second largest consumer debt in America. Most people sign them without fully understanding the total cost.

This calculator shows you your monthly payment, the total interest you will pay over the life of the loan, and how different repayment plans change the numbers — so you can make an informed decision at every stage.

Monthly Payment = P × [r(1+r)ⁿ] ÷ [(1+r)ⁿ − 1]
Total Cost = Monthly Payment × Number of Payments
The interest is the hidden price of borrowing. Know it before you sign.

Your Loan at a Glance
Monthly Payment
—
Total Interest Paid
—
Total Cost of Loan
—
Interest adds — to your original balance.
Interactive Tool

Student Loan Calculator

$1k $50k $100k $200k
1% Federal ~6.5% 15%
Standard Repayment Plan
5 yrs 10 yrs (standard) 25 yrs 30 yrs
Income-Driven Plan Comparison
SAVE/REPAYE 5% IBR 10% ICR 20%
Adding extra to principal cuts months and saves significant interest.
Standard Repayment
Monthly Payment
—
for X years
Total Interest
—
cost of borrowing
Total Cost
—
principal + interest
Income-Driven Plan Comparison
IDR Monthly Payment
—
—
—
The Verdict
Adjust the sliders to see your personalized loan assessment.
The Breakdown

Here's what's happening
under the hood:

01

Monthly Payment Is Just the Beginning

Your monthly payment is calculated using an amortization formula that splits each payment between interest and principal. Early payments go mostly to interest. As the balance shrinks, more of each payment hits the principal — which is why extra payments early in the loan are so powerful.

02

The Total Cost Is What Matters

The monthly payment is what you see. The total cost is the truth. A $30,000 loan at 6.5% over 10 years costs over $40,000. Stretched to 25 years, it costs over $60,000. The repayment term you choose multiplies the price of your education. Always know the total before you commit.

03

Income-Driven Plans Lower Payments — Not Cost

IDR plans cap your payment as a percentage of discretionary income, making them more manageable when income is low. But lower payments over a longer period often mean paying significantly more interest over the life of the loan. Know the trade-off before you choose.

Payment = P × [r(1+r)ⁿ] ÷ [(1+r)ⁿ − 1] IDR = (AGI − 150% Poverty) × IDR% ÷ 12
  • P Principal — total loan amount borrowed
  • r Monthly interest rate (annual rate ÷ 12)
  • n Total number of payments (years × 12)
  • AGI Adjusted Gross Income — your annual gross earnings
  • IDR% Plan percentage — 5%, 10%, or 20% of discretionary income
  • 150% Federal poverty guideline threshold used in IDR calculations
Reference

Student Loan
Key Terms

Federal vs. Private
The most important distinction
Federal loans are issued by the U.S. government and come with fixed rates, income-driven repayment options, deferment, forbearance, and potential forgiveness programs. Private loans are issued by banks and credit unions — they often have higher rates, fewer protections, and no access to federal repayment plans. Always exhaust federal options before turning to private loans.
Amortization
How your payment is split
Each monthly payment is split between interest and principal. Early in the loan, the majority goes to interest. Over time, more goes to principal. This is called amortization. Making extra payments early cuts both the timeline and the total interest because it reduces the principal balance on which interest is calculated.
Income-Driven Repayment
IDR plans explained
Income-Driven Repayment plans cap your monthly federal loan payment as a percentage of your discretionary income — the amount above 150% of the federal poverty guideline for your family size. Common plans include SAVE (5% of discretionary income), IBR (10%), and ICR (20%). After 20–25 years of qualifying payments, remaining balances may be forgiven — though forgiven amounts may be taxable.
Capitalized Interest
The silent debt builder
When unpaid interest is added to your principal balance — turning interest into principal — it is called capitalization. This happens when loans leave deferment or forbearance, or when you switch repayment plans. Capitalized interest means you then pay interest on your interest — compounding the cost of the loan in the wrong direction.
Public Service Loan Forgiveness
PSLF — who qualifies
If you work full-time for a qualifying government or non-profit organization and make 120 qualifying payments under an IDR plan, your remaining federal loan balance may be forgiven tax-free under PSLF. This can be one of the most valuable benefits available to public sector workers — but requires careful documentation and enrollment. Visit studentaid.gov for current program details.
The Bottom Line
What this means for you
Whether you are a high school student deciding how much to borrow, a college student managing existing loans, or a graduate figuring out repayment — the most powerful thing you can do is understand the full cost before every decision. Borrow only what you need. Pay more than the minimum when you can. And know every option available to you. This calculator is your starting point.
Legal

Financial Education Disclaimer

The content on this page — including the Student Loan Calculator, all payment estimates, repayment comparisons, and written explanations — is provided by Darnell Frazier, RFC® · CPRS™ · CCFC · CFEI® through Empowering Your Finance for educational and informational purposes only. It does not constitute personalized financial, legal, or student loan counseling advice.

All calculator results are hypothetical illustrations based on inputs you provide. They assume fixed interest rates, consistent payments, and no periods of deferment, forbearance, or capitalized interest. Actual loan costs will vary based on loan servicer, repayment plan elections, income changes, and federal policy updates. Income-Driven Repayment calculations use estimated federal poverty guidelines and are approximations only.

Student loan forgiveness programs — including PSLF and IDR forgiveness — are subject to federal legislation and may change. Forgiven amounts under IDR plans may be subject to federal income tax in the year of forgiveness. Always verify current program rules with your loan servicer or at studentaid.gov.

Always consult a qualified student loan counselor, certified financial advisor, or your loan servicer before making repayment decisions. Empowering Your Finance is not affiliated with the U.S. Department of Education or any federal student loan program. No information you enter is stored, transmitted, or shared.

© 2025 Empowering Your Finance · Darnell Frazier, RFC® · All rights reserved. Let's Grow Financially Together.

Empowering Your Finance
Let's Grow Financially Together
Darnell Frazier, RFC® · CPRS™ · CCFC · CFEI®
25+ years of financial planning experience