FreePayrollCalc
Auto Financing & 20/4/10 Budget Rule

Car Paycheck Calculator

Calculate exactly how much car you can afford based on your net take-home paycheck. See monthly auto loan payments, insurance, fuel costs, and check whether you pass the financial 20/4/10 rule.

Income & Vehicle Purchase Details

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Estimated FL Take-Home: $5,133/mo
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20% rule = $6,400
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Monthly Car Cost vs Paycheck✓ Passes 20/4/10 Rule
Monthly Auto Loan Payment
$606.32
Principal + Interest per month
Total Ownership / Month
$886.32
Loan ($606) + Ins/Gas ($280)
Percent of Monthly Take-Home:17.3% (Safe budget)
Cost Deducted Per Bi-Weekly Paycheck:$409.07
Remaining Disposable Paycheck:$1,960.03
Total Interest Paid Over Loan:$3,503.36
State Income Tax:$0.00 (More cash for car equity)
The 20/4/10 Financial Rule for Cars:
  • 20%: Put at least 20% down to prevent negative equity.
  • 4 Years: Finance for no more than 48 months (4 years).
  • 10%: Keep total vehicle expenses (payment + insurance + fuel) under 10% to 15% of your gross income.