How is a monthly loan payment calculated?

Monthly payments use the amortization formula M = P[r(1+r)^n]/[(1+r)^n-1], where P is the loan amount, r is the monthly interest rate, and n is total number of payments. For a $20,000 loan at 6% over 5 years, the monthly payment is $387.

How does a longer loan term affect my monthly payment?

A longer term lowers your monthly payment but increases total interest. For example, a $30,000 loan at 5%: a 3-year term costs $899/month ($2,367 total interest), while a 5-year term costs $566/month ($3,968 total interest). You save $333/month but pay $1,601 more overall.

What types of loans can I calculate with this payment calculator?

This payment calculator works for any fixed-rate amortized loan — personal loans, auto loans, home equity loans, student loans, and more. Enter the loan amount, annual interest rate, and term in years. Variable-rate or interest-only loans require different calculators.

How much of my monthly payment goes toward interest vs principal?

Early in your loan, most of the payment goes to interest. On a $25,000 loan at 7% for 5 years (payment: $495), the first payment applies $350 to principal and $146 to interest. By the final year, nearly all of each payment goes to principal. The payment calculator pie chart shows the overall split.

Should I choose a shorter loan term to save money?

If you can afford the higher monthly payment, a shorter term saves significant interest. A $40,000 loan at 6%: 3 years costs $1,217/month ($3,813 interest) vs 7 years at $585/month ($9,161 interest). You save $5,348 by choosing the shorter term. Use the payment calculator to find your sweet spot.

Is this payment calculator free?

Yes, this payment calculator is completely free to use online with no registration or download required. Run as many calculations as you need to compare loan amounts, rates, and terms.

Free Payment Calculator Online

Use this free payment calculator to figure out your monthly loan payment for any fixed-rate loan. Just enter the loan amount, annual interest rate, and repayment term — the payment calculator instantly shows your monthly amount, total interest, and total cost.

Loan Amount ($)

Annual Interest Rate (%)

Loan Term (years)

Monthly Payment

—

Enter your details to calculate

How This Payment Calculator Works

This payment calculator uses the standard amortization formula: M = P[r(1+r)^n] / [(1+r)^n - 1]. P is your loan principal, r is the monthly interest rate (annual rate divided by 12), and n is the total number of monthly payments. Every fixed-rate lender uses this same formula behind the scenes.

For example, a $25,000 personal loan at 7% for 5 years (60 payments) produces a monthly payment of $495. Over the full term you pay $4,700 in interest, bringing the total cost to $29,700. Adjusting the term to 3 years raises the payment to $772 but reduces total interest to $2,778 — a savings of nearly $2,000.

The pie chart on the results panel visualizes the split between principal and interest so you can see at a glance how much of your total outlay goes to the lender. This helps you decide whether a shorter term or larger down payment makes financial sense for your situation.

Payment Examples by Loan Size

$10,000 at 6% / 3 years$304/mo

$20,000 at 5% / 5 years$377/mo

$35,000 at 7% / 5 years$693/mo

$50,000 at 4% / 7 years$684/mo

These are estimated monthly payments for fixed-rate amortized loans. Your actual payment may vary based on fees, insurance, and other costs. Run your exact numbers through the payment calculator above.

3 Strategies to Lower Your Loan Payment

Extend the Term

Stretching a $30,000 loan at 6% from 3 years to 5 years drops the monthly payment from $913 to $580. The trade-off is $2,789 more in total interest. Use the payment calculator to find the term that balances affordability and total cost.

Negotiate the Rate

Dropping from 8% to 6% on a $25,000, 5-year loan saves $1,366 in total interest and lowers your monthly payment by $23. Even half a percentage point matters — shop multiple lenders and use your payment calculator results as leverage.

Increase Down Payment

Putting $5,000 down on a $30,000 purchase at 6% for 5 years reduces your loan to $25,000 and your monthly payment from $580 to $483. That extra $5,000 upfront saves $1,165 in interest over the life of the loan.

Frequently Asked Questions

Disclaimer: This payment calculator is for educational and planning purposes only. Actual loan payments may include additional fees, insurance, or taxes not reflected here. Consult your lender for exact payment amounts before signing any loan agreement.

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How This Payment Calculator Works

Payment Examples by Loan Size

$10,000 at 6% / 3 years$304/mo

$20,000 at 5% / 5 years$377/mo

$35,000 at 7% / 5 years$693/mo

$50,000 at 4% / 7 years$684/mo

3 Strategies to Lower Your Loan Payment

Extend the Term

Negotiate the Rate

Increase Down Payment

Frequently Asked Questions