The problem GAP insurance solves
When you finance a vehicle, you can easily owe more than it's worth — a situation called being “upside-down” or “underwater.” A new car can lose a large share of its value the moment you drive it off the lot and depreciate roughly 20% in the first year, while your loan balance drops much more slowly. If the car is totaled or stolen during that window, your standard comprehensive or collision coverage pays only the vehicle's actual cash value — not your loan balance.
That leaves a “gap” you'd owe out of pocket for a car you can no longer drive. GAP insurance exists to cover exactly that difference. This calculator shows whether you currently have a gap and, if so, how large it is — so you can decide whether GAP coverage is worth its (usually modest) cost.
How to use this calculator
- 1.Get your payoff balance. This is the amount your lender would require to close the loan today — not just your remaining payments. Your lender's app or a quick call gives you the exact figure.
- 2.Estimate your car's value. Look up your exact year, make, model, mileage, and condition on a valuation site like Kelley Blue Book or Edmunds, or ask your insurer what ACV they'd assign it.
- 3.Read your gap. If the balance exceeds the value, that difference is your gap — roughly what you'd owe after a total-loss payout without GAP coverage.
- 4.Re-check over time. As you pay down the loan and the two figures converge, the gap shrinks. Once you owe less than the car's value, you can usually drop GAP.
Frequently asked questions
What is GAP insurance and how does it work?+
GAP (Guaranteed Asset Protection) insurance covers the difference between what you owe on your auto loan or lease and your vehicle's actual cash value (ACV) if the car is totaled or stolen. Standard collision and comprehensive coverage only pay the ACV — the depreciated market value. If your loan balance is higher than that, GAP pays the remaining balance to your lender so you're not left paying for a car you no longer have.
Do I actually need GAP insurance?+
GAP is most useful when you owe more than your car is worth — common in the first few years of a loan, especially with a small down payment (under 20%), a long loan term (60–84 months), or a vehicle that depreciates quickly. New cars can lose 20% or more of their value in the first year, so many borrowers are upside-down early on. If your loan balance is already at or below your car's value, GAP offers little benefit and can usually be dropped.
How much does GAP insurance cost?+
GAP is inexpensive relative to what it covers. Added to an existing auto policy it often runs roughly $20–$60 per year. Dealerships typically charge far more — $400–$700 as a one-time add-on rolled into the loan — so buying it through your own insurer is usually the cheaper route. Compare both before signing dealer paperwork.
Does GAP insurance cover my deductible?+
Usually only partially, if at all. GAP covers the difference between your loan balance and the insurer's total-loss payout. Some GAP policies also reimburse your deductible (often up to a cap like $1,000), but many do not — read the specific policy. GAP pays your lender, not you, and it does not cover missed payments, extended warranties, or negative equity rolled in from a previous loan unless the policy specifically includes it.
When should I cancel GAP insurance?+
Once you owe less than your vehicle's actual cash value, you're no longer upside-down and GAP stops providing meaningful value. At that point you can typically cancel it and, if you paid up front (for example through a dealer), request a prorated refund for the unused portion. Re-run this calculator periodically as you pay down the loan to see when you cross that line.
Related guides and tools
Michael Torres
Editorial Lead, Catastrophe & Commercial Property
This article was researched and written by the Cover Forge USA editorial team against federal sources (NAIC, CMS, FEMA, DOL, SSA, state DOIs) and standard policy forms. Bylines organize content by topic — they do not assert individual licensure. See our editorial-policy for details.
Reviewed 2026-07-26
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