Loan Calculator

Loan calculator computes your monthly payment, total interest, and payoff timeline for 2026. Enter a $25,000 loan at 8% for 60 months and see how $100 extra per month saves $1,860 in interest and pays off 10 months early.

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Formula

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Core Formula
Loan payment uses amortization from principal, interest rate, and term.

How it works: The tool computes standard payment and compares accelerated payoff with extra monthly payment.

Worked Example

A $25,000 auto loan at 8% APR for 60 months.
1Step 1: Monthly rate = 8% / 12 = 0.6667%.
2Step 2: Payment = 25000 x 0.006667 x (1.006667^60) / (1.006667^60 - 1) = $506.91.
3Step 3: Total interest without extra payments = $506.91 x 60 - $25,000 = $5,414.60.
4Step 4: With $100 extra per month, the loan pays off in about 50 months with total interest of roughly $3,554, saving approximately $1,860.

Loan Payment and Early Payoff Planning

This calculator computes your standard monthly payment and shows how extra payments accelerate payoff and reduce total interest paid over the life of the loan.

  • Monthly payment is calculated using the standard amortization formula from principal, interest rate, and loan term
  • Extra payments go directly toward principal, reducing the balance that accrues interest each month
  • Even $50 to $100 extra per month can save thousands in interest and shave years off a long-term loan
  • The calculator shows both standard and accelerated payoff timelines for direct comparison

Review your loan agreement before making extra payments. Some loans have prepayment penalties, though most consumer loans in the US do not.

You can also calculate changes using our Mortgage Calculator, Compound Interest Calculator or Loan EMI Calculator.

Frequently Asked Questions

How much is the monthly payment on a $25,000 loan at 8%?

On a $25,000 loan at 8% for 60 months, the monthly payment is $506.91. Total interest over the life of the loan is $5,414.60, meaning you repay $30,414.60 in total.

How much do extra payments save on a 5-year loan?

On a $25,000 loan at 8% for 60 months, adding $100 per month in extra payments saves approximately $1,860 in interest and pays off the loan about 10 months early. Even $50 extra per month saves around $970.

Is the entered rate the same as APR?

Not necessarily. APR includes lender fees and other costs spread over the loan term. This calculator uses the nominal interest rate for payment calculations. Your actual APR may be 0.1% to 0.5% higher than the stated rate once fees are included.

Should I choose a shorter loan term or make extra payments?

Both reduce total interest. A shorter term (36 months vs 60 months) locks in higher required payments but guarantees savings. Extra payments give flexibility to pay more when you can and less when cash is tight. A 36-month term on $25,000 at 8% costs $783.41/month but saves $2,414 vs the 60-month term.

What types of loans does this calculator work for?

This calculator works for any fixed-rate amortizing loan: auto loans, personal loans, student loans, home equity loans, and more. It does not apply to revolving credit (credit cards) or variable-rate loans where the rate changes over time.

Is it possible to embed the Loan Calculator on another website?

Yes, embedding the Loan Calculator is free. Hit the "Embed" button on this page, adjust the width, height, and theme, then grab the iframe code. It works on WordPress, Wix, Squarespace, Shopify, and plain HTML pages. No registration needed. Full instructions at calculory.com/services/embed-calculators.

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