Private Student Loan Calculator
Estimate monthly payment, total cost over the life of the loan, and affordability across different repayment terms. Built for students and families modeling private loan options, and for school administrators evaluating LoanAmerica as a financing partner for their institutions.
Private student loan APRs vary widely based on credit profile, school, program, and term. Model a few scenarios, or use the rate from your loan offer. Variable-rate loans may change over time.
Longer terms lower monthly payments but increase total interest paid.
Include any grace period after graduation (typically 6 months for most private loans).
Optional. If you have a target salary post-graduation, we'll calculate the payment-to-income ratio and show how it stacks against industry affordability thresholds.
- Total amount paid
- $25,168
- Total interest
- $15,168
- Repayment starts
- July 2028
- Interest accrued during school
- $3,000 (capitalizes at repayment start)
How term length changes the cost
| Term | Monthly Payment | Total paid | Total interest |
|---|---|---|---|
| 1 years | $1,173.36 | $14,080 | $4,080 |
| 3 years | $450.65 | $16,223 | $6,223 |
| 5 years | $309.27 | $18,556 | $8,556 |
| 7 years | $250.86 | $21,072 | $11,072 |
| 10 years | $209.74 | $25,168 | $15,168 |
Same loan, same APR. Lower monthly payments come at the cost of more total interest paid.
How this calculator works
This calculator uses the standard amortization formula every private student lender uses. Inputs are loan amount, annual percentage rate, term length, and in-school decisions. Outputs are monthly payment, total paid, and total interest over the life of the loan.
In-school deferment means you're not making payments while enrolled, but interest still accrues. At the start of repayment, the accrued interest capitalizes (gets added to your principal). This means you end up paying interest on interest, which can add 20-40% to your total loan cost over a 4-year program. Choosing interest-only payments during school avoids this.
Term length is the largest lever you control. The same loan amount and APR can produce very different total costs depending on whether you choose a 5-year, 10-year, 15-year, or 20-year repayment. Lower monthly payments come at the cost of more total interest paid. The comparison table above shows the tradeoff for your specific inputs.
If you provide an expected post-graduation income, the calculator shows monthly payment as a percentage of monthly income. Standard financial planning guidance suggests student loan payments under 10% of gross income are comfortably affordable, 10-15% is manageable, 15-20% is stretched, and 20%+ exceeds standard affordability thresholds. Your specific situation depends on cost of living, other debts, and family obligations.
This calculator does not lock in actual rates (those depend on lender underwriting at application). It does not include origination fees if your specific lender charges them (most private student loans do not). It does not handle variable APRs that change over time (the calculation assumes a fixed rate). The in-school accrual model uses simple-interest approximation, which slightly underestimates the cost compared to the daily-compounding model many lenders use in practice.
What's next?
Apply for a private student loan
If the numbers above work for your situation, the next step is a real application. LoanAmerica reviews every credit profile, with 72-hour funding for approved applications across undergraduate, graduate, vocational, and trade-school programs.
Begin your applicationEvaluate LoanAmerica as a financing partner
If you're a financial aid director, dean of admissions, or VP of enrollment evaluating LoanAmerica for your institution, our partnerships team will walk you through the model, school-side economics, and how onboarding works. About 30 days from inquiry to live.
Schedule a partnership review