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RealityMath

Car Affordability Calculator

Find out how much car you can really afford based on YOUR income using real costs, not just payments.

Affordable Annual Car Budget (10% Rule)
$6,000.00
check_circle Safe car ownership limit
Recommended Car Price
$25,000

Based on 5-year depreciation and real costs

account_balance_wallet

Your Income

$

Your pre-tax income (before taxes and deductions)

directions_car

Vehicle Details

miles/year
mpg
$ /gal
$

Full coverage estimate

$

Oil changes, tires, repairs

% annual

Opportunity cost of capital

Copies current inputs to your clipboard

Income Breakdown

Annual Gross Income $60,000
10% Safety Limit (Car Budget) $6,000
Monthly Car Budget $500

5-Year True Cost (by Category)

Depreciation $0
Fuel $0
Insurance $0
Maintenance $0
Opportunity Cost (7%) $0
Total 5-Year Cost $0
Per Year Average $0

What Car Can You Afford?

Conservative (Budget)

$20,000 vehicle

Toyota Corolla, Honda Civic

Recommended (Balanced)

$25,000 vehicle

Based on your 10% budget

Maximum Stretch

$35,000 vehicle

15% of income (risky)

Key Insight

The 10% rule states that total transportation costs (car + insurance + fuel + maintenance) shouldn't exceed 10% of your gross income. This includes the opportunity cost—money that could have been invested instead of tied up in your vehicle. Most people ignore this and end up car-poor.

Real Cost is 3x the Payment

A $500/month car payment feels manageable, but true cost is $400 payment + $150 fuel + $100 insurance + $50 maintenance = $700/month real cost.

Depreciation is Hidden

Your car loses 20% value year 1 (not a monthly bill). Over 5 years, depreciation often exceeds the purchase price in total True Cost.

Opportunity Cost Matters

$25,000 in a car earning 0% return vs. $25,000 invested at 7% = $1,750/year in foregone wealth. Over 20 years, that's $87,500 lost.