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On a $30,000 car with $3,000 down (financing $27,000 plus tax and fees), a 60-month loan at a 7% APR works out to roughly $560–$600 a month once your state's sales tax is added. Stretch it to 72 months and the payment drops to around $480–$510, but you pay noticeably more interest. Put more down, get a lower APR, or pick a shorter term and the number falls. Enter your state, price and down payment above for an exact figure including your local tax.

It depends heavily on your credit score and whether the car is new or used. As a rough 2026 guide, borrowers with excellent credit (760+) often see new-car APRs in the mid-single digits, while used-car rates and lower credit scores run several points higher. New cars almost always get better rates than used. The single biggest lever on your rate is your credit score, so it's worth checking and improving it before you shop — even a one-point lower APR can save hundreds over the loan. Get pre-approved from your own bank or credit union to compare against the dealer's offer.

In most states, yes — and it's a real saving. Forty-plus states tax only the difference between the car's price and your trade-in value, so trading in a $15,000 car against a $40,000 purchase means you're taxed on $25,000, not $40,000. At a 6% rate that's $900 you don't pay. The exceptions are California, Virginia, Hawaii and Washington DC, which tax the full purchase price regardless of trade-in. This calculator applies your state's rule automatically when you enter a trade-in.

Long loans lower your monthly payment but carry real risks. Because cars depreciate fast, a 72- or 84-month loan often leaves you 'underwater' — owing more than the car is worth — for years, which is a problem if you need to sell or it's totaled. You also pay substantially more total interest. They can make sense if you get a low APR and genuinely need the lower payment, but the smarter move is usually the shortest term you can comfortably afford. Toggle between 36, 48, 60, 72 and 84 months above to see exactly how much extra interest each year of term adds.

A widely used guideline is the 20/4/10 rule: put at least 20% down, finance for no more than 4 years (48 months), and keep your total monthly transportation costs — car payment plus insurance — under 10% of your gross monthly income. So on a $6,000-a-month income, you'd aim to keep car payment and insurance combined under about $600. It's a deliberately conservative rule that keeps you from being house-poor on wheels; many people stretch it, but the further you go past it, the more of your budget your car eats. Use the calculator to find a payment that fits.

Almost always, yes. A pre-approval from your own bank or credit union gives you a real interest rate to compare against the dealer's financing, and it turns you into a cash buyer at the lot, which strengthens your negotiating position on the price. Dealers can sometimes beat your pre-approved rate — great, let them — but without it you have no benchmark and may accept a marked-up rate. Pre-approval also caps how much you'll spend, helping you ignore the upsells. Use this calculator to know your target payment first, then get pre-approved, then shop.