Loan Input Form
Large screens show three columns. Medium screens show two. Mobile screens show one.
Example Data Table
| Example Metric | Value |
|---|---|
| Education Loan Amount | $25,000.00 |
| Interest Rate | 6.10% |
| Rate Discount | 0.25% |
| Origination Fee | $375.00 |
| Repayment Starting Balance | $26,126.32 |
| Required Monthly Payment | $288.09 |
| Extra Monthly Payment | $125.00 |
| Annual Extra Payment | $500.00 in January |
| One-Time Lump Sum | $1,500.00 in month 18 |
| Standard Total Interest | $8,444.68 |
| Accelerated Total Interest | $4,259.46 |
| Estimated Interest Saved | $4,185.22 |
| Estimated Months Saved | 56 |
Formula Used
1. Financed balance
Financed Balance = Loan Amount + (Loan Amount × Origination Fee %)
2. Grace-period capitalization
Starting Repayment Balance = Financed Balance × (1 + Monthly Rate)Grace Months
3. Monthly payment
Payment = P × r ÷ [1 - (1 + r)-n]
4. Monthly interest
Interest = Current Balance × Monthly Rate
5. Monthly closing balance
Closing Balance = Opening Balance + Interest - Scheduled Payment - Extra Monthly - Annual Extra - Lump Sum
6. Savings outputs
Interest Saved = Standard Interest - Accelerated Interest. Months Saved = Standard Months - Accelerated Months.
P is the starting repayment balance, r is the monthly interest rate, and n is the total number of repayment months.
How to Use This Calculator
- Enter the education loan amount and yearly interest rate.
- Add origination fee and any grace period before repayment begins.
- Include any automatic rate discount you expect to receive.
- Set your extra monthly payment for faster balance reduction.
- Add optional annual extra payments in a chosen calendar month.
- Add one lump-sum payment and the repayment month for it.
- Choose the repayment start date to build the schedule correctly.
- Submit the form to see savings, payoff timing, the full schedule, and downloadable exports.
Frequently Asked Questions
1. What does this calculator estimate?
It estimates monthly payment, total interest, payoff timing, and savings from extra payments on education-related loans. It also models fees, grace capitalization, annual extras, and a one-time lump sum.
2. Why include origination fees?
Origination fees increase the financed balance when they are added to borrowing costs. Including them produces a more realistic repayment plan and prevents understating long-term interest.
3. What happens during the grace period?
When grace capitalization is enabled, interest grows before repayment starts and gets added to the balance. That raises the payment base and can increase total borrowing cost.
4. How does the rate discount help?
A rate discount lowers the effective APR used in the repayment calculation. Even a small reduction can cut interest noticeably across long student-loan terms.
5. What is the difference between monthly, annual, and lump-sum extras?
Monthly extras reduce balance steadily. Annual extras create one recurring yearly reduction. A lump sum is a single large payment in a chosen month. Using all three usually shortens repayment faster.
6. Does the graph compare two repayment paths?
Yes. The Plotly chart compares the standard balance decline against the accelerated plan. A steeper drop usually means faster principal reduction and lower overall interest.
7. Can I export the results?
Yes. The page provides CSV export for the optimized repayment schedule and PDF export for the summary and schedule, making it easier to share or archive your plan.
8. Is this suitable for comparing study-financing strategies?
Yes. It is useful for comparing repayment scenarios for undergraduate, postgraduate, or professional-study borrowing. It supports practical what-if planning before committing to a repayment strategy.