Buy smarter, lease sharper, and stop overpaying for transportation.
The average new car transaction now exceeds $48,000, and auto loan terms are stretching to 72+ months. Whether you're buying or leasing, new or used, the financing structure can mean thousands of dollars in savings or waste. Run the numbers before you walk into a dealership.
Start Here
Car Affordability Calculator
Calculate the true monthly cost you can afford — not just the sticker price. Factor in insurance, fuel, maintenance, depreciation, and opportunity cost to find a vehicle budget that fits your full financial picture.
Buying a Car
Leasing
Auto Loans
Frequently Asked Questions
Should I buy or lease a car from a financial standpoint?
Leasing offers lower monthly payments and a new vehicle every 2–3 years, but you build no equity and face mileage penalties if you exceed your allotted miles (typically 10,000–15,000 per year). Buying — particularly a used vehicle 2–3 years old — almost always wins on total cost of ownership over 5–7 years because you avoid the steepest first-year depreciation (typically 15–25% of value). Leasing can make financial sense if you drive fewer than 12,000 miles annually, prefer driving newer vehicles, and value predictable expenses. The most expensive scenario financially is repeatedly buying new and trading every 3–4 years, which means you're perpetually in the steepest depreciation zone while carrying financing costs.
How much car can I realistically afford?
A commonly cited guideline is to keep total monthly vehicle costs — loan payment, insurance, fuel, and maintenance — below 15–20% of monthly take-home pay. Consumer Reports estimates the all-in monthly cost of owning a typical new vehicle at $900–$1,200 when depreciation, financing, insurance, fuel, and maintenance are included. For the loan itself, many advisors suggest the total vehicle price should not exceed 35% of annual income. The most common mistake is focusing exclusively on the monthly payment while ignoring the loan term: a $45,000 car with a 72-month loan at 8% costs nearly $12,000 in interest, and you'll likely be underwater on the loan for years.
How does my credit score affect the auto loan rate I'll receive?
Auto loan interest rates vary dramatically across credit tiers. In 2025, buyers with excellent credit (750+) can expect 5–7% on new vehicles; those with good credit (700–749) see 7–9%; fair credit (620–699) typically results in 12–18%; subprime borrowers below 620 often face 18–25%+. On a $35,000 loan financed over 60 months, the difference between a 6% and 18% rate is roughly $11,000 in additional interest paid. If your credit needs improvement before financing, spending 6–12 months reducing credit utilization, disputing reporting errors, and avoiding new inquiries can meaningfully move your score and your rate.
What is residual value in a car lease and why does it matter?
Residual value is the agreed-upon value of the leased vehicle at the end of the lease term, expressed as a percentage of MSRP and set by the leasing company before you sign. It represents what the lender believes the car will be worth when you return it. Your monthly lease payment largely reflects the depreciation between the car's purchase price and its residual value — a higher residual means you're financing less depreciation and your payment is lower. Manufacturers often inflate residuals on popular models to make lease payments more attractive. At lease end, you can purchase the vehicle at the predetermined residual price — this became highly advantageous during 2021–2023 when used car values exceeded residuals by thousands of dollars.
When does refinancing an auto loan make financial sense?
Auto loan refinancing makes sense when your credit score has improved significantly since the original loan (enabling a meaningfully lower rate), or when market rates have dropped. Unlike mortgage refinancing, auto loan refinancing typically has minimal fees, so the break-even threshold is low — even modest rate improvements can justify the process. The most important caveat: don't extend your loan term to achieve a lower monthly payment without running the total interest math. Refinancing a $25,000 balance from 15% to 8% on the remaining term saves money; refinancing to a lower rate but extending from 24 remaining months to 60 months might cost more overall even though the monthly payment looks better.
Official Resources
Related Topics
All calculators and content on FinanceWonk are for educational purposes only and do not constitute financial, tax, or legal advice. Always consult a qualified professional before making significant financial decisions. Full disclaimer