How accurate is this payment calculator?
This tool follows standard amortization formulas and is reliable for planning estimates. Final lender figures can vary based on fees, taxes, and underwriting terms.
Payment Calculator
Use this payment calculator to estimate monthly obligations and compare repayment affordability before selecting a loan term.
Payment Calculator
Estimate a level monthly payment for a fixed term, or enter a fixed payment to see how long it takes to pay off the loan at your rate.
Modify the values and click the Calculate button to use
Payment estimate
Results
Monthly Payment$1,687.71
Total of 180 Payments$303,788.46
Total Interest$103,788.46
Principal $200,000.00
Interest $103,788.46
Principal 65.84% · Interest 34.16%
You will need to pay $1,687.71 every month for 15 years to payoff the debt.
Amortization Schedule
| Year | Interest | Principal | Ending Balance |
|---|---|---|---|
| 1 | $11,769.23 | $8,483.33 | $191,516.67 |
| 2 | $11,246.00 | $9,006.57 | $182,510.10 |
| 3 | $10,690.49 | $9,562.07 | $172,948.02 |
| 4 | $10,100.72 | $10,151.84 | $162,796.18 |
| 5 | $9,474.58 | $10,777.98 | $152,018.20 |
| 6 | $8,809.82 | $11,442.75 | $140,575.45 |
| 7 | $8,104.05 | $12,148.51 | $128,426.94 |
| 8 | $7,354.76 | $12,897.80 | $115,529.13 |
| 9 | $6,559.25 | $13,693.31 | $101,835.82 |
| 10 | $5,714.68 | $14,537.89 | $87,297.94 |
| 11 | $4,818.01 | $15,434.55 | $71,863.38 |
| 12 | $3,866.04 | $16,386.52 | $55,476.86 |
| 13 | $2,855.36 | $17,397.21 | $38,079.66 |
| 14 | $1,782.34 | $18,470.23 | $19,609.43 |
| 15 | $643.13 | $19,609.43 | $0.00 |
How the Payment Calculator Works
Payment Calculator
This payment calculator models a standard fixed-rate amortizing loan with monthly payments. It supports two common planning modes: fixed term (solve for payment) and fixed payment (solve for payoff time).
Fixed Term vs Fixed Payments
Fixed Term
You enter loan amount, interest rate, and a repayment horizon. The calculator outputs the level monthly payment required to fully amortize the loan by the end of the term, along with total interest and a principal versus interest breakdown.
Fixed Payments
You enter loan amount, interest rate, and a monthly payment you intend to make. The calculator estimates how many months are required to reach a zero balance, assuming the payment stays constant and the loan amortizes monthly at the stated rate.
What the Schedule Shows
The amortization schedule summarizes how each period allocates dollars to interest versus principal, and how the remaining balance declines over time. Annual view aggregates monthly math into year-by-year totals; monthly view shows each payment period.
Important Limitations
- Results assume a level payment schedule and do not model variable rates, skipped payments, fees, or taxes.
- Real lender rounding, payment timing, and day-count conventions can produce small differences versus this estimate.
- If a fixed payment is too low to reduce principal after interest, payoff is not reachable at that payment amount.
Practical Usage Tips
- Compare at least two terms (for example 15 years vs 30 years) before choosing a structure.
- When testing fixed payments, increase the payment until the payoff timeline matches your goal.
- Pair payment estimates with an emergency fund plan so the payment remains sustainable through income variability.
Use this payment calculator as a planning baseline. For binding decisions, validate assumptions with lender disclosures and your own budget stress tests.
Frequently Asked Questions
Can I include extra monthly payments?
Yes. Add an extra monthly amount in the calculator to see how increased principal payments can reduce interest and total payoff time.
Is this calculator free to use?
Yes. LoanToolsHub calculators are free, require no signup, and are optimized for both desktop and mobile devices.