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Student Loan Monthly Interest Estimator
Estimate monthly interest accrual from your loan balance and rate.
Privacy: This App does not send or save your entries. Do not enter passwords, codes, full account numbers, or private identifiers.
Enter your numbers
Enter only the details needed for this task. Check them against the original source.
Your result
Your result will appear here.
Engine self-test
Running golden cases…
Source notes
- U.S. Department of Education, Federal Student Aid — Interest Rates and Fees for Federal Student Loans
Federal student loans carry fixed annual interest rates set annually, with different treatment for subsidized and unsubsidized loans.
Reviewed 2026-10-10. This is a simple interest estimate; capitalization rules differ by loan program.
What this App does not do
This estimates simple interest. It does not replace your servicer statement or give financial advice.
This free App has no paid features. It does not contact an agency, employer, bank, seller, provider, or other person.