Reference
Auto Loan Glossary
The vocabulary of the finance office, in plain English. Know these and the contract stops being able to hide behind them.
- Amortization
- The schedule by which a loan is paid off over time. Early payments are mostly interest and barely touch the principal, which is why your balance falls slowly at first — and why you can stay underwater for years on a long term.
- Annual Percentage Rate (APR)
- The yearly cost of borrowing, expressed as a percentage. On a car loan it's set largely by your credit tier, the lender, and the term. A higher APR raises both your payment and your total interest.
- Actual Cash Value (ACV)
- What your car is worth on the day it's totaled or stolen — what your insurer pays out. Crucially, this is the car's value, not your loan balance, which is why a gap can exist.
- Credit Tier
- The bucket a lender sorts you into based on your credit score (e.g. super-prime, prime, subprime). Your tier largely determines your APR. See how tiers set your rate.
- Deficiency Balance
- The debt left over after a repossessed car is sold for less than you owed. You can still be on the hook for it — a car you no longer have, generating a bill you still do.
- Depreciation
- The loss in a car's value over time, steepest in the first few years. Depreciation racing ahead of your loan balance is what creates negative equity.
- Down Payment
- Money paid up front, reducing the amount financed. A larger down payment is the main defense against starting a loan underwater.
- Gap (Negative Equity)
- The amount by which your loan balance exceeds your car's value. When you owe more than the car is worth, you're “underwater” or “upside-down.”
- Gap Insurance (GAP)
- Coverage that pays the difference between your loan balance and the car's value if it's totaled or stolen. Worth it when you're deeply underwater; a waste once you've climbed above water. See when it's worth it.
- Loan Term
- The length of the loan in months. Longer terms lower the monthly payment but raise total interest and keep you underwater longer. See the 84-month trap.
- Payoff Balance
- The exact amount needed to close your loan today, including accrued interest. It's higher than the balance shown on a statement — always use the payoff figure when calculating your gap.
- Principal
- The actual amount borrowed, separate from interest. Extra payments applied to principal (not the next bill) shrink your balance fastest and pull your break-even point forward.
- Refinancing
- Replacing your current loan with a new one, ideally at a lower rate. Beware refinancing into a longer term — it can lower the payment while costing more overall.
- Repossession
- The lender's process of taking back a financed car after default. It's a staged process with several points to intervene. See the timeline.
- Rolling Negative Equity
- Folding the unpaid gap from an old car loan into the financing of a new one. It feels like an escape but compounds the debt onto a new depreciating asset. See why it's a trap.
- Underwater / Upside-Down
- Owing more on the loan than the car is currently worth. Common in the first years of any financed car; dangerous mainly at the moment you're forced to sell or trade.