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See your exact take-home pay after federal taxes, Social Security, and Medicare — updated for 2026 tax brackets.
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Car Affordability Calculator
Find out how much car you can afford — monthly payment, total cost of ownership, and the 20/4/10 rule check.
Vehicle & Loan Details
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20% recommended by the 20/4/10 rule
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Leave 0 if no trade-in or paid off
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Avg new car APR ~7–8% (2026)
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Your Income & Ongoing Costs
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Used for the 20/4/10 rule check
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Oil changes, tires, repairs (~1–2%/yr of value)
Monthly Payment
Loan Amount
Total Interest
Total Cost of Car
Monthly Car Payment
Total Monthly Cost
payment + insurance + gas + maintenance
Total Interest Paid
Out-the-Door Price
price + tax + fees − trade-in equity
20/4/10 Rule Check
📌 The 20/4/10 Rule: Put at least 20% down, finance for no more than 4 years, and keep total monthly car costs (payment + insurance) under 10% of your gross monthly income. This rule helps you avoid being “car poor.”
Total Cost Breakdown
| Cost Item | Monthly | Over Loan Term | 5-Year Total |
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How Car Affordability Is Calculated
Your monthly payment is calculated using standard loan amortization. We then layer in the true cost of car ownership — insurance, fuel, maintenance — to show you the full picture.
- Loan amount: Vehicle price + sales tax + fees − down payment − trade-in equity (trade-in value minus amount owed).
- Monthly payment: Calculated with standard amortization formula at your APR over the loan term.
- 20/4/10 rule: A popular personal finance guideline — 20% down, 4-year max term, 10% max of gross income on car costs.
- Depreciation: New cars lose roughly 15–25% of value in year one and ~50% over 5 years — factored into the 5-year cost estimate.
Actual loan offers depend on your credit score. Always get pre-approved and compare rates from multiple lenders before visiting a dealership.