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Auto Loan Calculator

Estimate true monthly payments and total cost so you can choose the right financing offer before visiting the dealership.

Data-backed car financing

APR, incentives, and depreciation assumptions combine Experian, Edmunds, and Federal Reserve data so monthly payments reflect what lenders quote this week.

Benchmarks refreshed weekly after Experian releases and monthly CPI + Treasury updates.

Compliance & privacy checklist

Inputs stay inside your browser. Quotes remain educational until you complete disclosures with a licensed lender.

4-step auto financing workflow

Set the right budget, shop for rates, maximize trade-in value, and sync automation with our calculators.

1. Define realistic budget & specs

Lock in total price, must-have packages, and insurance/maintenance caps before you shop.

2. Shop and verify the rate

Compare bank, credit union, and dealer offers, then confirm APR versus the advertised base rate.

3. Capture trade-in & down payment

Document equity, rebates, taxes, and fees so the calculator reflects the true loan amount.

4. Handoff to ROI & AI tools

Use the ROI and AI calculators to stress-test cash flow, reminders, and ownership insights.

Loan details
$
$
20.0% of price
$
$
Enter total tax (varies by region: typically 0%–10% of price)
$
Title, documentation, dealer fees
Typical range 3-15% depending on credit
$
Auto loan basics

Credit score impact

Scores of 720+ earn top rates, while scores below 600 may face double-digit APRs or require a co-signer.

Depreciation

New cars lose 20-30% in the first year and roughly 60% by year five. Certified pre-owned vehicles hold value better.

Total cost of ownership

Budget for insurance, maintenance, fuel, and registration in addition to loan payments.

Worked example: Certified pre-owned EV

We modeled an electric crossover using current Experian and Edmunds benchmarks to show how incentives and extra payments shift the totals.

Scenario inputs

Vehicle price
$44,800 sticker (Certified pre-owned EV)
Down payment
$6,500 cash + $2,500 state EV rebate applied at point of sale
Trade-in equity
$7,800 after payoff on existing sedan
Manufacturer incentives
$1,000 loyalty cash + 0.5% rate reduction from captive lender
Taxes & fees
$3,150 taxes/fees based on buyer ZIP
APR & credit tier
5.4% APR (Experian prime tier, 72-month term)
Loan timeline
72 months with optional $100 extra payment from month 7 onward
Insurance & upkeep
$240/mo insurance + $90 charging/maintenance budget

Planner takeaways

  • Base payment: $611/mo → $715/mo when factoring insurance and charging, still under the $750 cap.
  • Loan-to-value falls below 90% because trade-in equity plus rebates trim the amount financed.
  • Extra $100 toward principal shortens payoff by 11 months and saves ~$1,350 interest compared with the standard schedule.
  • Export amortization to ROI calculator to document opportunity cost and to AI planner for maintenance reminders.

Numbers source Experian Q4 2024 State of Automotive Finance Market, Federal Reserve G.19, and Edmunds EV price tracker.

How drivers use this planner

Real purchase flows that connect ROI and AI calculators.

Family hybrid upgrade

Dual-income household replacing a nine-year-old SUV.

  • Timeline: Delivery needed within four months with a 72-month cap on financing.
  • Plan: Combine 20% down, trade-in equity, and credit-union APR while reserving $220/month for insurance and fuel.
  • Result: ROI calculator tracks opportunity cost while this planner keeps payments aligned with childcare expenses.
Forecast ownership cost with ROI calculator

Electric commuter efficiency

Urban professional driving 18k miles per year.

  • Timeline: Needs delivery before the current lease ends in 60 days.
  • Plan: Stack EV rebates, employer charging stipend, and biweekly autopay to cut APR by 0.25%.
  • Result: AI calculator schedules reminders for inspections and charging costs while this page manages the loan math.
Review the scenario with the AI planner

Auto financing data stack

Datasets backing the APR ranges, incentive assumptions, and depreciation curves.

Experian State of Automotive Finance Market

Quarterly report covering credit tiers, APR averages, and term lengths for new and used loans.

View source

Edmunds & Kelley Blue Book transaction data

Tracks incentives, average transaction prices, and depreciation curves for mainstream segments.

View source

Federal Reserve G.19 & H.15 releases

Consumer credit + Treasury yield data to stress-test spreads, teasing out realistic rate floors.

View source

Cadence: Experian quarterly, Edmunds/KBB weekly, Federal Reserve monthly/daily.

Auto loan & financing guide

What affects interest rates

Rates depend on credit score, term length, new vs. used vehicles, and down payment size.

  • Excellent credit (720+): 4-6% APR
  • Good credit (680-719): 6-9% APR
  • Fair credit (620-679): 9-13% APR
  • Poor credit (<620): 13-20% APR

Depreciation matters

Cars lose value quickly, impacting equity and refinance options.

  • Year 1: 20-30% drop
  • Year 2: another 15-20%
  • Year 5: 60-70% total depreciation
  • Certified pre-owned vehicles depreciate slower

Financing tips

Strategies to secure better auto loan terms and rates.

  • Get pre-approved before shopping
  • Compare banks, credit unions, and captive lenders
  • Review manufacturer incentives
  • Keep terms under five years when possible

Auto loan best practices

✅ Do this

  • Secure pre-approval to understand your budget and negotiate confidently
  • Compare rates from banks, credit unions, and online lenders before visiting the dealer
  • Consider certified pre-owned vehicles for better value and slower depreciation
  • Limit loan terms to 4-5 years to minimize interest
  • Put 10-20% down to reduce the loan amount and avoid being upside down

❌ Avoid this

  • Do not focus solely on the monthly payment—evaluate total cost and terms
  • Avoid loans longer than 6 years—you will pay too much interest
  • Do not roll negative equity from a trade-in into the new loan
  • Skip dealer add-ons such as extended warranties unless you have researched them
  • Never accept the first offer—always negotiate and compare

Auto loan calculator FAQs

How is the monthly car payment calculated?

We use the standard amortization formula: M = P[r(1+r)^n]/[(1+r)^n-1], where P is the loan amount (price + taxes + fees − down payment − trade-in), r is the monthly rate (APR ÷ 12), and n is the number of payments.

What influences auto loan interest rates?

Credit score, loan term, new vs. used status, down payment, debt-to-income ratio, and market rates. Scores above 720 typically qualify for the best offers.

Should I finance through the dealer or a bank?

Compare banks, credit unions, and dealer financing. Credit unions often offer lower rates, while dealer programs can include 0% APR or cash rebates. Negotiate the car price separately from financing.

How much should I put down?

Aim for 10-20% to lower payments and limit negative equity. New cars depreciate quickly, so 20% down keeps you ahead of early depreciation.

What loan term is best?

Choose the shortest term you can afford. Longer terms (6-8 years) shrink payments but raise total interest and increase the risk of owing more than the car is worth. Terms of 3-5 years balance affordability and cost.

Important auto financing disclaimer

Examples are educational only and not binding credit offers.

  • ⚠️Outputs blend your inputs with the data sources above. Confirm every figure with your chosen lender before signing documents.
  • ⚠️Rates, taxes, incentives, and insurance premiums can change daily. Build buffers for maintenance, depreciation, and negative equity risk.
  • ⚠️FutureValueCalc is not a lender or broker. Work with licensed professionals for official offers and required disclosures.

Connect your auto plan to other tools

Export payments to the ROI and AI calculators to compare opportunity cost, fuel savings, and automated reminders.