INDEPENDENT CAR-BUYING MATH

Read the deal before you sign it.

Break a dealer quote into selling price, fees, add-ons, trade equity and financing, then compare the car's full monthly cost with your budget.

FreeNo account required
PrivateNo dealer lead form
PracticalBuilt around buyer-order math
BUYER COST SHEETEXAMPLE
$34,995 vehicle
Loan payment$617 / mo
Insurance$186 / mo
Fuel$143 / mo
Maintenance reserve$75 / mo
Estimated monthly ownership$1,021
Uses the same inputs available in the calculator below.
RUN THE NUMBERS

Can you actually afford this car?

Change any number and your results update instantly.

QUICK ESTIMATE

Start with just 5 things.

You can fine-tune taxes, insurance and driving costs later.

~30 sec
$
$5,000$150,000
$
$1,000$20,000
$
$0$35,000
%
0%25%
Loan term
Using estimates for$186/mo insurance · 1,000 mi/mo · 25 MPG · 6.5% tax
How we calculate this →
Advanced detailsTrade-in, taxes, insurance, bills & driving costs
⌄

Purchase details

Monthly budget

Driving assumptions

LOAN COMPARISON

See what stretching the loan really costs.

Same car, same APR, same down payment — only the term changes.

WHAT IF?

Three ways to make this deal cheaper.

Preview the impact, then apply a scenario to your calculator.

$2,000 lower price$43 less / month

$431 less interest

$2,000 more down$40 less / month

$405 less interest

APR 2 points lower$31 less / month

$1,853 less interest

FULL BUYER REPORT

Before you spend thousands, get the full picture.

The free calculator handles the monthly math. Premium Buyer Reports help you inspect, finance and negotiate the actual purchase, with options for one car, three cars, or a full 30-day shopping window.

From $7.99single, 3-pack, or 30-day pass
YOUR BUYER REPORT🔒 PREVIEW
✓

48 / 60 / 72 / 84-month financing breakdown

LOCKED
✓

$1K / $2K / $3K negotiation scenarios

LOCKED
✓

Dealer fee & out-the-door checklist

LOCKED
✓

Vehicle-specific inspection checklist

LOCKED
✓

Recall and safety-data summary

LOCKED
✓

Questions to ask before signing

LOCKED
WHY THIS IS DIFFERENT

A payment calculator only tells you half the story.

01

Real monthly cost

Payment, insurance, fuel and maintenance are combined into one number you can budget around.

02

Income impact

See how much of your take-home pay the vehicle consumes after your existing bills.

03

Long-term cost

Compare loan terms, total interest and five-year ownership cost before committing.

TOOLS & GUIDES

Start with the question you are actually asking.

Focused calculators for payments, ownership cost, affordability and loan-term comparisons. Every tool can feed into the full calculator.

DEAL CHECK

Is this a good car deal?

Audit the selling price, fees, add-ons, trade and financing before you sign.

Check the deal
DEALER FEES

Which fees should I question?

Separate government charges, dealer-controlled fees and optional products.

Check the fees
APR CHECK

Is the dealer APR costing me more?

Compare two loan rates using the same amount financed and term.

Compare the APR
VIN & SAFETY

What does NHTSA show for this car?

Decode the VIN and review model-level recalls and complaint context.

Check the VIN
USED CAR

What should I inspect before buying?

Use an interactive walkaround and road-test scorecard before money changes hands.

Open the checklist
AFFORDABILITY

How much car can I afford?

Compare a car's real monthly cost with your take-home pay.

Open guide
PAYMENT

Car payment calculator

Change price, APR, down payment and term without filling out a long form.

Open tool
OWNERSHIP

True cost calculator

See payment, insurance, fuel and maintenance together.

Open tool
FINANCING

60 vs 72 months

See how a lower payment can change the total interest bill.

Compare terms
DOWN PAYMENT

How much should I put down?

Compare cash down with the resulting loan payment and interest.

Compare down payments
OUT-THE-DOOR

Payment with taxes & fees

See how costs above the sticker price change the financed amount.

Calculate the real deal
NEGATIVE EQUITY

Upside-down trade calculator

See exactly what an old loan balance adds to the next deal.

Calculate negative equity
TRADE-IN

Trade-in payment calculator

Use trade value and payoff together to find the real equity.

Calculate the trade
ORIGINAL DATA

2026 Car Affordability Index

Compare standardized costs across vehicle prices, incomes and APRs.

Explore the index