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Education Debt Repayment

Student Loan Calculator & Payoff Planner

Calculate your monthly student debt installments, total interest charges, and loan payoff dates. Compare standard 10-year repayment with extended terms and discover how modest extra monthly contributions can save thousands in capitalized interest.

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Federal vs. Private Student Loans: Repayment Architectures

Higher education debt is unique in consumer finance because loans are frequently disbursed across multiple semesters over 4 to 6 years, with interest accruing during undergraduate studies. Navigating loan repayment successfully requires understanding the legal distinctions between federal and private debt.

1. Federal Student Loans (Direct Subsidized vs. Unsubsidized)

Federal student loans are funded by the U.S. Department of Education and come with substantial borrower protections:

  • Direct Subsidized Loans: Available exclusively to undergraduate students demonstrating financial need. Crucially, the federal government pays the interest charges while you are enrolled at least half-time, during the 6-month post-graduation grace period, and during approved deferment periods.
  • Direct Unsubsidized Loans: Available to both undergraduate and graduate students regardless of financial need. Interest begins accruing on the day of disbursement. If unpaid, accrued interest is capitalized (added to your principal balance) at the conclusion of your grace period.
  • Income-Driven Repayment (IDR): Federal loans qualify for government repayment plans (e.g., SAVE, PAYE, IBR) that cap monthly payments at 5%–10% of discretionary income and forgive remaining balances after 10 to 25 years.

2. Private Student Loans

Private student loans are issued by commercial banks, credit unions, and online lenders. Private loans lack federal borrower protections, cannot participate in federal loan forgiveness programs (such as Public Service Loan Forgiveness - PSLF), and typically feature strict underwriting requiring a creditworthy cosigner.

The Impact of Interest Capitalization

When student loan interest capitalizes, your unpaid interest is permanently rolled into your principal balance. For example, if you graduate with $30,000 in original principal and $4,000 in unpaid accrued interest, capitalization resets your new borrowing baseline to $34,000. From that day onward, interest compounds on the higher $34,000 balance.

Frequently Asked Questions

PSLF is a federal program that forgives the remaining balance on your Direct Loans after you have made 120 qualifying monthly payments under an accepted income-driven repayment plan while working full-time for a qualifying 501(c)(3) nonprofit or government employer. Forgiven balances under PSLF are completely tax-free.
Refinancing federal loans into a private loan can lower your interest rate if you have strong credit and income. However, doing so permanently forfeits all federal benefits, including income-driven repayment safety nets, generous forbearance, and federal loan forgiveness programs.
Yes. Under federal student loan servicing regulations, payments automatically cover outstanding accrued interest first, and any excess funds are applied directly to principal. Always specify to your loan servicer that extra payments should not advance your due date ("no paid-ahead status"), ensuring maximum immediate principal reduction.
Student Loan Disclaimer: This calculator provides standard amortization projections. Federal income-driven repayment calculations, discretionary income limits, poverty guidelines, and forgiveness terms are governed by the U.S. Department of Education and federal statute.
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