Loan Payoff Calculator
Find out how many months it will take to pay off a loan with a given monthly payment, and how much interest you will pay.
Your inputs
Results
Months to pay off
38
- Time to pay off
- 3 years 2 months
- Total interest
- $1,346.98
- Total paid
- $11,346.98
- Final payment
- $246.98
✓Exact calculation — rounded only for display
| Year | Paid | Interest | Principal | End balance |
|---|---|---|---|---|
| 1 | $3,600.00 | $695.03 | $2,904.97 | $7,095.03 |
| 2 | $3,600.00 | $453.90 | $3,146.10 | $3,948.93 |
| 3 | $3,600.00 | $192.80 | $3,407.20 | $541.73 |
| 4 | $546.98 | $5.25 | $541.73 | $0.00 |
| No. | Payment | Interest | Principal | Balance |
|---|---|---|---|---|
| 1 | $300.00 | $66.67 | $233.33 | $9,766.67 |
| 2 | $300.00 | $65.11 | $234.89 | $9,531.78 |
| 3 | $300.00 | $63.55 | $236.45 | $9,295.33 |
| 4 | $300.00 | $61.97 | $238.03 | $9,057.30 |
| 5 | $300.00 | $60.38 | $239.62 | $8,817.68 |
| 6 | $300.00 | $58.78 | $241.22 | $8,576.46 |
| 7 | $300.00 | $57.18 | $242.82 | $8,333.64 |
| 8 | $300.00 | $55.56 | $244.44 | $8,089.20 |
| 9 | $300.00 | $53.93 | $246.07 | $7,843.13 |
| 10 | $300.00 | $52.29 | $247.71 | $7,595.42 |
| 11 | $300.00 | $50.64 | $249.36 | $7,346.06 |
| 12 | $300.00 | $48.97 | $251.03 | $7,095.03 |
| 13 | $300.00 | $47.30 | $252.70 | $6,842.33 |
| 14 | $300.00 | $45.62 | $254.38 | $6,587.95 |
| 15 | $300.00 | $43.92 | $256.08 | $6,331.87 |
| 16 | $300.00 | $42.21 | $257.79 | $6,074.08 |
| 17 | $300.00 | $40.49 | $259.51 | $5,814.57 |
| 18 | $300.00 | $38.76 | $261.24 | $5,553.33 |
| 19 | $300.00 | $37.02 | $262.98 | $5,290.35 |
| 20 | $300.00 | $35.27 | $264.73 | $5,025.62 |
| 21 | $300.00 | $33.50 | $266.50 | $4,759.12 |
| 22 | $300.00 | $31.73 | $268.27 | $4,490.85 |
| 23 | $300.00 | $29.94 | $270.06 | $4,220.79 |
| 24 | $300.00 | $28.14 | $271.86 | $3,948.93 |
Inputs are never added to links for financial, salary or health calculators.
What this calculator does
If you know your balance, rate and what you can pay each month, this tool runs the loan forward to the payoff month. It flags payments that are too small to ever cover the interest.
Formula and method
Worked example
Calculated by this tool with its default inputs:
Inputs
- Current balance: 10000 (any currency)
- Interest rate (annual): 8 %
- Monthly payment: 300 (any currency)
Results
- Months to pay off: 38
- Time to pay off: 3 years 2 months
- Total interest: 1,346.98
- Total paid: 11,346.98
- Final payment: 246.98
How to read the results
Even modest increases to the monthly payment can shorten payoff dramatically when rates are high.
Assumptions and limitations
- Assumes no new borrowing, fees or rate changes.
- If the payment is not larger than the first month’s interest the balance never falls; the tool reports this instead of a result.
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
Why is my final payment smaller?
The last payment only needs to cover the remaining balance plus that month’s interest.
Methodology and verification
- Result type
- Exact mathematical calculation (rounded only for display)
- 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