All Calculators & Tools
Free car buying and auto loan calculators to help you make smart decisions.
Core Calculators
Calculate your car budget, loan payments, and affordability.
Car Affordability Calculator
How much car can you afford? Based on income, expenses, and state tax.
Auto Refinance Calculator
Should you refinance? Compare your current loan vs new rate.
Lease vs Buy Calculator
Compare leasing vs buying total cost over 3–5 years.
Trade-In Calculator
Calculate your trade-in equity and how it affects your new car budget.
Cost & Comparison Tools
Compare fuel costs, insurance, gap coverage, and state taxes.
Gap Insurance Calculator
Do you need gap insurance? Calculate your upside-down risk period.
Gas Cost Comparison
Compare fuel costs by MPG and annual mileage. Find true ownership cost.
New vs Used Comparison
Which saves more over 5 years? Compare depreciation, warranty, and repairs.
State Sales Tax Calculator
Calculate total car cost including your state and local sales tax.
Guides & Reference
In-depth guides and state-by-state reference data.
Official Auto Finance & Vehicle Ownership Reference Sources
- CFPB Official Auto Loan & Vehicle Affordability Budget Guidelines
- FTC Federal Trade Commission Car Buying & Auto Financing Consumer Protection Rules
- IRS Official Vehicle Loan Interest Tax Deduction & Auto Ownership Tax Rules
- EPA Fuel Economy Database – Long-Term Vehicle Ownership Cost Reference