Loan-to-value (LTV) ratio compares how much you're borrowing to what the car is actually worth. It's one of the main numbers a lender looks at before approving your loan and setting your rate — separate from your credit score, and often less talked about, even though it can move your approval odds and APR just as much.
LTV = (Loan Amount ÷ Vehicle Value) × 100
If you're financing $28,000 on a car worth $30,000, your LTV is 93.3%. If you're financing $30,000 on that same $30,000 car — no down payment — your LTV is 100%. Anything financed above the car's value (taxes, fees, an extended warranty, or rolled-in negative equity from a previous loan) pushes your LTV above 100%.
| LTV Range | What It Signals to a Lender |
|---|---|
| Under 80% | Low risk — you have real equity in the car from day one |
| 80–100% | Standard — typical for financed purchases with a modest down payment |
| 100–125% | Higher risk — often includes rolled-in negative equity, taxes, or add-ons financed into the loan |
| 125%+ | High risk — many lenders cap financing here or decline; refinancing becomes difficult |
The car is the collateral securing your loan. If you stop paying, the lender's fallback is to repossess and sell the vehicle to recover what's owed. A lower LTV means the car is worth more than the loan balance, so the lender is fully covered even after resale costs and some depreciation. A high LTV means the lender could lose money on repossession — the resale value might not cover the remaining balance — so they price that risk into your rate, or decline the loan if the ratio is too high.
This is a genuinely different lens from your credit score. A borrower with excellent credit but a 100%+ LTV (small down payment, rolled-in negative equity, add-ons financed in) can still face a higher rate than their score alone would suggest, because the collateral risk is separate from the repayment risk.
Most lenders use LTV tiers as one input into their rate sheet alongside credit score. Crossing from, say, 90% to 105% LTV can move your rate by half a point to a full point, even with identical credit. On a $25,000 loan over 60 months, a 1-point rate increase adds roughly $650-$700 in total interest — a real cost attached purely to how the loan is structured, not to your creditworthiness.
LTV matters again later if you try to refinance. Most refinance lenders have maximum LTV limits — often around 125-130% — above which they won't approve a new loan, regardless of your credit score. If your current loan's LTV is very high, refinancing may be difficult until you've paid down the balance or the car has had time to appreciate relative to depreciation, or both. This is one reason it's worth checking your current LTV before assuming refinancing will lower your payment — the math only works if a lender is willing to take on the loan at your current ratio.
Use our refinance calculator to see the potential savings once you know where your LTV stands, and our negative equity rollover calculator if you're weighing a trade-in that would push your next loan's LTV up.
Two buyers finance the same $30,000 car. Buyer A puts 15% down ($4,500), financing $25,500 — an LTV of about 85%. Buyer B puts nothing down and rolls in $3,000 of negative equity from a trade-in, financing $33,000 — an LTV of 110%. Even with identical credit scores, Buyer B is likely to see a noticeably higher APR offer, because the lender is financing more than the car is worth with less cushion if something goes wrong. Buyer A, by contrast, has built-in equity from day one and typically qualifies for the lender's best available rate tier.
This is worth keeping in mind separately from the 20/4/10 rule guidance common in car-buying advice — that rule targets a comfortable payment and down payment size for your budget, while LTV is specifically about how a lender views the collateral risk on the loan itself. The two overlap (a 20% down payment naturally produces a lower LTV) but they're answering different questions, and it's the LTV side that shows up directly in your rate sheet.
See how it affects your new loan's balance and monthly payment before you decide.
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