Student Loan Repayment Estimator
Enter your loan balance, interest rate, remaining term, and see your monthly payment and total repayment cost instantly.
$
Loan Amount - the total outstanding principal balance.
Interest Rate - the annual percentage rate applied to the loan.
years
Loan Term - total repayment period in years.
$
Extra Monthly Payment - additional amount paid above the minimum each month.
months
Grace Period - months before repayment begins (interest may accrue).
Enter your values above to see the results.
Tips & Notes
- ✓Borrow only what you need, not what you are offered. Every $1,000 borrowed at 6.53% over 10 years costs $1,354 total. The difference between borrowing $20,000 and $30,000 is $13,540 in total repayment.
- ✓Start repayment before the 6-month grace period ends if you can. Interest on unsubsidized loans accrues during enrollment and the grace period — paying even $50/month while in school reduces capitalized interest.
- ✓Make bi-weekly payments instead of monthly. Paying half your monthly payment every two weeks results in 26 half-payments (13 full payments) per year instead of 12, reducing a 10-year loan by 1-2 years.
- ✓If pursuing Public Service Loan Forgiveness (PSLF), confirm your employer qualifies before choosing a repayment plan. Non-profit and government employment qualifies; private sector does not.
- ✓Refinancing federal loans to private loans permanently eliminates access to income-driven repayment, PSLF, and federal forbearance options. Only refinance if you have stable income and will not need these protections.
Common Mistakes
- ✗Borrowing the maximum offered rather than only what is needed — loan limits exist to protect borrowers from over-borrowing, but accepting the maximum creates unnecessary debt and interest.
- ✗Ignoring unsubsidized loan interest during enrollment — interest accrues from disbursement even while you are in school. On a $20,000 unsubsidized loan over 4 years, approximately $5,000 in interest capitalizes before repayment begins.
- ✗Choosing the extended repayment plan solely for the lower payment without calculating the total interest cost — lower monthly payments always mean more interest paid over the life of the loan.
- ✗Missing payments or entering default — default triggers immediate repayment of the full balance, wage garnishment, tax refund seizure, and permanent credit damage. Call your servicer before missing a payment to request deferment or forbearance.
- ✗Confusing deferment with forgiveness — deferment postpones payments but does not eliminate interest accrual on unsubsidized loans. Deferred interest capitalizes and increases your principal balance.
Student Loan Repayment Estimator Overview
Student loan repayment planning determines whether your college investment generates a positive financial return or becomes a decade-long financial burden. The monthly payment on a student loan is straightforward to calculate, but the total interest paid over the life of the loan — which can equal or exceed the original principal — is what most borrowers underestimate. Understanding both numbers before borrowing changes how you think about every dollar of debt.
Monthly payment formula (standard amortization):
Monthly Payment = P × [r(1+r)^n] ÷ [(1+r)^n − 1]Where P = principal, r = monthly interest rate (annual rate ÷ 12), n = total number of monthly payments.
EX: $30,000 loan at 6.54% over 10 years → r = 0.00545, n = 120 → Monthly payment = $30,000 × [0.00545 × (1.00545)^120] ÷ [(1.00545)^120 − 1] = $339/month → Total paid = $40,680 → Interest = $10,680Federal student loan interest rates (2024–2025):
| Loan Type | Who Qualifies | Interest Rate | Annual Limit | Lifetime Limit |
|---|---|---|---|---|
| Direct Subsidized | Undergrad with financial need | 6.53% | $3,500–$5,500 | $23,000 |
| Direct Unsubsidized (Undergrad) | Any enrolled undergrad | 6.53% | $2,000–$7,500 | $31,000 (dependent) |
| Direct Unsubsidized (Grad) | Graduate students | 8.08% | $20,500 | $138,500 |
| Direct PLUS (Parent) | Parents of dependent undergrads | 9.08% | Up to cost of attendance | No limit |
| Private Loans | Creditworthy borrower | 4–16% variable | Up to cost of attendance | Varies by lender |
| Repayment Plan | Monthly Payment | Repayment Period | Total Interest Paid | Best For |
|---|---|---|---|---|
| Standard (10-year) | $397 | 10 years | $12,600 | Lowest total cost |
| Graduated | $232 → $700 | 10 years | $15,900 | Expect income growth |
| Extended (25-year) | $237 | 25 years | $36,200 | Low payment priority |
| SAVE (income-driven) | 5–10% of discretionary income | 20–25 years | Varies (forgiveness possible) | Low income or PSLF path |
Frequently Asked Questions
The standard guideline: total student loan debt at graduation should not exceed your expected starting annual salary. If you expect to earn $50,000 in your first year, borrow no more than $50,000 total. This produces a manageable standard 10-year monthly payment of approximately $560 — about 13% of gross monthly income. Borrowing 2x your starting salary creates financial strain for years. Borrowing 3x or more is financially dangerous unless you are pursuing a field with guaranteed high income growth.
Subsidized loans: the government pays the interest while you are enrolled at least half-time, during the 6-month grace period, and during authorized deferment periods. Unsubsidized loans: interest accrues from the day funds are disbursed, even during school. On a $5,500 unsubsidized loan borrowed freshman year at 6.53%, approximately $1,430 in interest accrues by graduation — this capitalizes and becomes part of your principal. Always borrow subsidized loans first.
The Standard 10-Year Plan minimizes total interest paid and should be the default choice for most borrowers with stable income. Choose Income-Driven Repayment (IDR) if your debt significantly exceeds your income, if you work in public service and plan to pursue PSLF, or if your income is genuinely too low to afford standard payments. Graduated repayment makes sense only if you are confident your income will grow substantially in the early repayment years. Extended repayment is rarely the best financial choice.
PSLF forgives the remaining balance on federal Direct Loans after 120 qualifying monthly payments (10 years) made while working full-time for a qualifying employer (federal, state, local government or eligible non-profit organizations). Payments must be made under an income-driven repayment plan. The forgiven amount under PSLF is not taxable income. PSLF is most valuable for borrowers with high debt relative to income — a teacher with $80,000 in debt earning $45,000 annually benefits dramatically.
Federal student loans have no prepayment penalty — you can pay any extra amount at any time and it applies directly to principal if you specify this to your loan servicer. Most private lenders also have no prepayment penalty (confirm in your loan agreement). Paying an extra $100/month on a $30,000 standard loan reduces the payoff period from 10 years to approximately 7.5 years and saves about $2,900 in interest. Direct extra payments to the highest-interest loan first.
Contact your loan servicer immediately — before missing a payment, not after. Federal loan options include: deferment (temporarily stops payments, interest may still accrue), forbearance (temporarily reduces or stops payments, interest accrues on all loan types), and switching to an income-driven repayment plan with lower payments. Default occurs after 270 days of missed payments and triggers severe consequences including wage garnishment and tax refund seizure. The Fresh Start program can help borrowers currently in default restore standing.