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Car loan calculator for monthly auto payments

Plan a new or used vehicle purchase with fast payment estimates, APR comparisons, trade-in planning, down payment scenarios, and total interest breakdowns.

Quick answer: A car loan calculator is an educational financial planning tool that applies standard annuity amortization algorithms to calculate periodic payments, total interest expenses, and loan payoff dates. Adjust the principal amount, interest rate (APR), and loan term in the interactive calculator to simulate repayment scenarios instantly in your browser. All calculations run privately on your device with zero sign-up required.

Try the Loan Calculator

Instant results. All calculations happen in your browser. No data sent.

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months
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Monthly Payment
$0
Total Interest
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Total Repayment
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Principal 0% Interest 0%
Payoff Time
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Interest Saved with Extras
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Amortization Preview (first 6 payments) View full schedule ↓
Month Payment Principal Interest Balance

Side-by-Side Comparison

Scenario A (current)
Monthly:
Total Interest:
Total Paid:
Scenario B
Monthly:
Total Interest:
Total Paid:
★★★★★
4.8 ★
App Store rating

Why serious borrowers download the app

Free iPhone planning app. Calculations stay on your device.

Primary search

car loan calculator

Loan Calculator helps US borrowers estimate payments, understand interest, and compare repayment choices before talking to a lender.

Calculator features

Estimate the full cost before you sign

Calculate car payments from price, down payment, APR, and term

Compare new car and used car loan scenarios

See how interest rate changes affect the monthly payment

Review total interest and amortization over the life of the loan

iPhone 17 Pro Mockup
Loan Calculator calculator list on iPhone
iPhone 17 Pro Mockup
Loan Calculator instant payment calculation screen
iPhone 17 Pro Mockup
Loan Calculator total cost analysis screen

Common uses

Plan before you borrow

How to Calculate Your Monthly Loan Payment

15-Year vs. 30-Year Repayment Benchmark

See how loan term selection and extra principal payments alter your total interest costs.

Loan Scenario ($300,000 at 6.5% APR) Monthly Payment Total Interest Paid Total Repaid Payoff Period
30-Year Fixed (Standard Term) $1,896 / mo $382,633 $682,633 30 Years (360 mo)
15-Year Fixed (Accelerated Equity) $2,613 / mo $170,389 $470,389 15 Years (180 mo)
30-Year Fixed + $200/mo Extra Principal $2,096 / mo $288,410 $588,410 23.8 Years (Save $94,223)

Aggregated and anonymized from app usage. Not financial advice. See our methodology.

4.8 ★ App Store rating
Hundreds of thousands Planning sessions
Private On-device by default
Free Core tools, no sign-up

App Store feedback themes

What users commonly mention in reviews

These are recurring themes paraphrased from public App Store reviews — not individual quotes. Read verified reviews directly on the App Store.

4.8
★★★★★
App Store rating
App Store Google Play

Free · No sign-up

Detailed amortization schedules

Reviewers often mention that full month-by-month breakdowns help them understand principal vs. interest before talking to a lender.

Accurate payment estimates

A common theme is that results align closely with lender quotes when the same loan amount, APR, and term are entered.

Privacy and on-device calculations

Many reviewers value that core calculations stay on the device without requiring an account for basic use.

Side-by-side loan comparisons

Users frequently highlight comparing two loan scenarios to see which offer has the lower true cost over time.

Extra payment modeling

Reviewers often note that modeling extra payments early shows meaningful interest savings and shorter payoff timelines.

Simple, fast interface

A recurring comment is that the app is straightforward to use without unnecessary steps or clutter.

FAQ

car loan calculator questions

How does a car loan calculator estimate monthly payments?

It uses the vehicle loan amount, APR, and term to estimate principal and interest payments, then shows how the balance can amortize over time.

Can I use this as an auto loan calculator for used cars?

Yes. Enter the used car price, down payment, APR, and term to estimate the monthly auto loan payment and total interest.

Does this replace a lender quote?

No. It is for planning. Final rates, taxes, fees, and approvals come from the lender, dealer, and applicable local rules.

How to calculate car payment?

To calculate a car payment, enter the vehicle price, down payment, trade-in value, APR, and loan term into a car payment calculator. The auto loan calculator applies the standard amortization formula to return your estimated monthly payment. You can compare new and used car loan scenarios to find the best deal before negotiating with a dealer.

What is the interest rate on a car loan?

The interest rate on a car loan depends on your credit score, loan term, new vs. used vehicle, and the lender. Current auto loan rates for well-qualified buyers typically range from 5% to 10% for new cars and higher for used cars. Use a car loan interest calculator to see how different rates affect your monthly car payment and total interest.

How much to put down on a car?

A typical car down payment is 10% to 20% of the vehicle price. A larger down payment lowers your monthly car payment, reduces total interest, and may help you qualify for a better auto loan rate. Use a car loan calculator to test different down payment amounts and see how they affect your monthly payment and total loan cost.

How to calculate car loan interest?

To calculate car loan interest, multiply your loan balance by the monthly interest rate (APR ÷ 12). In the early months, more of your payment goes to interest. A car loan calculator shows the full interest breakdown and amortization schedule so you can see exactly how much interest you pay over the loan term.

What is a car note?

A car note is another name for a car loan agreement. It includes the loan amount, interest rate, monthly payment, and loan term. When you finance a vehicle, you sign a car note promising to make monthly payments until the loan is paid off. Use an auto loan calculator to estimate your car note before visiting a dealer.

What is a good auto loan rate?

A good auto loan rate depends on your credit score and current market conditions. As of mid-2026, rates below 6% for new cars and below 8% for used cars are considered competitive for well-qualified borrowers. Check current car loan rates and use a car payment calculator to compare offers from banks, credit unions, and dealer financing.

Understanding Your car loan calculator

Using a dedicated Car Loan Calculator (2026) – Auto Payment & Interest Estimator is the first step toward financial clarity. Before you apply for a loan or commit to a new rate, it's critical to know exactly how much you'll pay every month and how much interest will accrue over time.

How Our Calculations Work

Our app processes your principal amount, interest rate (APR), and loan term to generate an exact amortization schedule. Here are the key factors:

  • Principal: The starting balance of your loan.
  • Interest Rate: A lower rate drastically reduces your total repayment amount.
  • Loan Term: A longer term means lower monthly payments but more total interest paid over time.

By simulating different scenarios—like putting down a larger down payment or making early extra payments—you can find the fastest route to becoming debt-free.

Written and reviewed by · Editorial Team ·

Grounded in real usage. The scenarios and examples shown here reflect patterns observed across many hundreds of thousands of on-device calculations performed by users of the companion iPhone app. This helps surface practical insights beyond textbook formulas.

How to Calculate Your Monthly Loan Payment

Every fixed-rate loan payment splits into two distinct components: principal (the borrowed balance) and interest (the finance charge). Loan Calculator applies the standard fixed annuity amortization formula utilized by commercial lenders, enabling instant, transparent scenario verification.

Example: A $30,000 car loan at 7.2% APR for 60 months produces a monthly payment of ~$597. Total interest paid: roughly $5,820. Extend to 72 months and the payment drops to ~$514 but total interest climbs above $7,000. The interactive calculator above shows these trade-offs instantly.

What Is an Amortization Schedule?

An amortization schedule is the month-by-month financial ledger of every debt payment across the entire loan term. Early payments consist primarily of interest charges, while later payments transfer predominantly toward principal reduction. Reviewing this schedule demonstrates why applying early extra principal payments drastically reduces total compound interest.

Our live tool and the app both generate full schedules so you can pick any month and see the exact remaining balance.

How Extra Payments Cut Interest

Accelerated debt payments directly reduce outstanding principal balance, thereby avoiding future compounding interest cycles. The Loan Calculator live engine models exact interest savings and shortened repayment timelines, demonstrating how additional monthly payments can eliminate months of debt.

Comparing Two Loan Offers Side by Side

The Loan Comparison tool allows borrowers to evaluate two distinct loan financing offers side by side under standardized assumptions. By contrasting monthly payments, total interest expenses, and payoff dates, borrowers can identify the true long-term cost differences between competing quotes.

Refinance Break-Even: Is It Worth It?

A refinance break-even calculation evaluates the exact number of months required for recurring monthly payment reductions to recoup upfront refinancing closing costs. If the break-even horizon is 18 months and the property will be retained for 5 years, refinancing offers net financial benefit.

Loan Calculator

Web gives you quick numbers. The app gives you the full professional toolkit.