Student Loan Calculator
Estimate student loan payments, interest over the life of the loan, amortization, and the impact of extra payments.
Loan details
Adjust the numbers — results update instantly.
Payment method
Fixed monthly payment — 等额本息
120 months · type any years or pick a preset
1 = January … 12 = December
First payment: Nov 2026
Early repayment
Rate comparison
Results
Amortizing · $40,000.00 · 5.5% APR · 10 yr · starts Nov 2026
- Monthly payment
- $434.11
- Total interest
- $12,092.44
- Total paid
- $52,092.44
- Payoff date
- Oct 2036
- Payoff time
- 10 yr
- First payment
- Nov 2026
Rate comparison
Same method (Amortizing) and term — no extra payments.
| APR | Payment | Interest | Total paid |
|---|---|---|---|
| 5.5% | $434.11 | $12,092.44 | $52,092.44 |
| 6.5% | $454.19 | $14,503.12 | $54,503.12 |
| 7.5% | $474.81 | $16,976.69 | $56,976.69 |
Method comparison
Same loan amount, APR, and term — no extra payments · balloon due in 5 yr.
| Method | Payment | Interest | Total paid |
|---|---|---|---|
| 10 yr | $434.11 | $12,092.44 | $52,092.44 |
| 10 yr | $516.66 | $11,091.77 | $51,091.77 |
| 10 yr | $183.33+ balloon $40,000.00 | $21,999.60 | $61,999.60 |
| 9 yr (234 biweekly) | $217.06 | $10,744.02 | $50,744.02 |
| 5 yr | $434.11+ balloon $22,726.32 | $8,772.92 | $48,772.92 |
Amortization schedule
Showing 24 of 120 periods
| # | Date | Payment | Principal | Interest | Extra | Balance |
|---|---|---|---|---|---|---|
| 1 | Nov 2026 | $434.11 | $250.78 | $183.33 | $0.00 | $39,749.22 |
| 2 | Dec 2026 | $434.11 | $251.93 | $182.18 | $0.00 | $39,497.29 |
| 3 | Jan 2027 | $434.11 | $253.08 | $181.03 | $0.00 | $39,244.21 |
| 4 | Feb 2027 | $434.11 | $254.24 | $179.87 | $0.00 | $38,989.97 |
| 5 | Mar 2027 | $434.11 | $255.41 | $178.70 | $0.00 | $38,734.56 |
| 6 | Apr 2027 | $434.11 | $256.58 | $177.53 | $0.00 | $38,477.98 |
| 7 | May 2027 | $434.11 | $257.75 | $176.36 | $0.00 | $38,220.23 |
| 8 | Jun 2027 | $434.11 | $258.93 | $175.18 | $0.00 | $37,961.30 |
| 9 | Jul 2027 | $434.11 | $260.12 | $173.99 | $0.00 | $37,701.18 |
| 10 | Aug 2027 | $434.11 | $261.31 | $172.80 | $0.00 | $37,439.87 |
| 11 | Sep 2027 | $434.11 | $262.51 | $171.60 | $0.00 | $37,177.36 |
| 12 | Oct 2027 | $434.11 | $263.71 | $170.40 | $0.00 | $36,913.65 |
| 13 | Nov 2027 | $434.11 | $264.92 | $169.19 | $0.00 | $36,648.73 |
| 14 | Dec 2027 | $434.11 | $266.14 | $167.97 | $0.00 | $36,382.59 |
| 15 | Jan 2028 | $434.11 | $267.36 | $166.75 | $0.00 | $36,115.23 |
| 16 | Feb 2028 | $434.11 | $268.58 | $165.53 | $0.00 | $35,846.65 |
| 17 | Mar 2028 | $434.11 | $269.81 | $164.30 | $0.00 | $35,576.84 |
| 18 | Apr 2028 | $434.11 | $271.05 | $163.06 | $0.00 | $35,305.79 |
| 19 | May 2028 | $434.11 | $272.29 | $161.82 | $0.00 | $35,033.50 |
| 20 | Jun 2028 | $434.11 | $273.54 | $160.57 | $0.00 | $34,759.96 |
| 21 | Jul 2028 | $434.11 | $274.79 | $159.32 | $0.00 | $34,485.17 |
| 22 | Aug 2028 | $434.11 | $276.05 | $158.06 | $0.00 | $34,209.12 |
| 23 | Sep 2028 | $434.11 | $277.32 | $156.79 | $0.00 | $33,931.80 |
| 24 | Oct 2028 | $434.11 | $278.59 | $155.52 | $0.00 | $33,653.21 |
Estimates only. Actual lender terms, fees, taxes, and insurance may differ. Not financial advice.
Student Loan FAQ
Is this for federal or private student loans?
The math works for both amortizing student loans. Federal plans may offer income-driven payments or forgiveness that this calculator does not model.
How do extra student loan payments help?
Extra principal reduces accruing interest and can shave years off repayment. Enter a monthly extra or a one-time payment to estimate the impact.