Student Loan Repayment Calculator
Estimate student loan payments, including interest that accrues and is capitalized during a grace or deferment period.
Your inputs
Results
Monthly payment
$334.53
- Interest added before repayment (capitalized)
- $825.00
- Balance when repayment starts
- $30,825.00
- Interest paid during repayment
- $9,318.98
- Total repaid
- $40,143.98
≈Estimate based on the stated model and assumptions
| Year | Paid | Interest | Principal | End balance |
|---|---|---|---|---|
| 1 | $4,014.36 | $1,636.02 | $2,378.34 | $28,446.66 |
| 2 | $4,014.36 | $1,501.84 | $2,512.52 | $25,934.14 |
| 3 | $4,014.36 | $1,360.13 | $2,654.23 | $23,279.91 |
| 4 | $4,014.36 | $1,210.42 | $2,803.94 | $20,475.97 |
| 5 | $4,014.36 | $1,052.26 | $2,962.10 | $17,513.87 |
| 6 | $4,014.36 | $885.18 | $3,129.18 | $14,384.69 |
| 7 | $4,014.36 | $708.64 | $3,305.72 | $11,078.97 |
| 8 | $4,014.36 | $522.20 | $3,492.16 | $7,586.81 |
| 9 | $4,014.36 | $325.19 | $3,689.17 | $3,897.64 |
| 10 | $4,014.74 | $117.10 | $3,897.64 | $0.00 |
Inputs are never added to links for financial, salary or health calculators.
What this calculator does
On unsubsidized student loans, interest usually accrues before repayment begins and is then added to the balance (capitalized). This tool shows how that raises the starting balance, the monthly payment and total interest.
Formula and method
Worked example
Calculated by this tool with its default inputs:
Inputs
- Loan balance: 30000 (any currency)
- Interest rate (annual): 5.5 %
- Repayment term: 10 years
- Months before repayment starts: 6 months
- Interest accrues during that time (unsubsidized): Yes
Results
- Monthly payment: 334.53
- Interest added before repayment (capitalized): 825
- Balance when repayment starts: 30,825
- Interest paid during repayment: 9,318.98
- Total repaid: 40,143.98
How to read the results
Paying the accruing interest during the grace period keeps the balance from growing and lowers lifetime cost.
Assumptions and limitations
- Income-driven plans, forgiveness programmes and variable rates are not modelled.
- Some loans capitalize interest at different times — check your servicer’s terms.
Financial results are estimates based on the inputs and assumptions shown. They are not financial advice; confirm figures with your lender, provider or a qualified adviser before making decisions.
Questions
What is the difference between subsidized and unsubsidized?
For subsidized loans, interest does not accrue for you during qualifying periods; for unsubsidized loans it does. Untick the accrual box to model a subsidized loan.
Methodology and verification
- Result type
- Estimate based on the stated model and assumptions
- Formula version
- 1.0
- Automated verification
- 3 reference and validation test cases, checked against independently computed values. The site cannot be built if any of them fail.
- Editorial review
- Awaiting human editorial review. The explanation was drafted with AI assistance; the formula and examples are verified by the automated tests above.
Privacy
Everything you enter is calculated in this browser and is not sent to Numerith or anyone else. Because this calculator can involve personal financial or health details, your inputs are never added to share links or saved to history. Privacy policy