Estimate how much GAP insurance covers after a total loss: enter your loan payoff, the car’s value and your deductible to see the shortfall GAP may pay.

Use your loan or lease payoff balance. If you have no insurance settlement yet, the car’s market value minus your deductible estimates it.

What the car was worth just before the loss, e.g. from Kelley Blue Book.

Blank means $0. Insurers usually pay the car’s actual cash value minus your deductible.

Policy limit and comparisons
Blank models no cap. Zero models no GAP payment; neither confirms coverage.

Optional. Blank omits the payout-to-cost comparison; this is not expected value.

Related Calculators

    Gap Coverage Formula

    The gap coverage amount is the remaining balance that still needs to be covered after subtracting the amount already paid from the total cost. This calculator is useful when you know any two values and want to solve for the third.

    GC = max(0, TC - AP)
    Variable Meaning Typical Unit
    GC Gap coverage, or the remaining amount still to be covered USD
    TC Total cost, total balance, or total amount owed USD
    AP Amount already paid toward the total cost USD

    For a positive known gap, the relationship can be rearranged as below. A zero gap is not uniquely reversible: total owed can be anywhere from zero to the payment, or payment can be at least the amount owed. The auto inverse modes display these ranges.

    TC = GC + AP
    AP = TC - GC

    How to Calculate Gap Coverage

    1. Identify the total cost or total amount owed.
    2. Determine how much has already been paid toward that amount.
    3. Subtract the amount paid from the total cost.
    4. The result is the remaining gap coverage needed.

    This is a straightforward remaining-balance calculation, but it becomes especially useful when comparing payoff amounts, partial payments, and expected reimbursements.

    Adjusted Gap Coverage with Insurance

    In some situations, such as auto loans or financed assets, you may also want to consider an insurance payout or another outside payment source. In that case, the uncovered portion can be estimated with an adjusted formula:

    AGC = max(0, TC - AP - IC)
    Variable Meaning Typical Unit
    AGC Adjusted gap coverage after insurance or reimbursement USD
    IC Insurance coverage or payout applied to the remaining balance USD

    If the adjusted result is negative, that usually means the balance has already been fully covered. In practical terms, the remaining uncovered gap would be treated as zero.

    Examples

    Example 1: Basic Gap Coverage

    Suppose the total cost is $25,000 and the amount already paid is $10,000.

    GC = 25,000 - 10,000 = 15,000

    The remaining gap coverage needed is $15,000.

    Example 2: Gap Coverage After Insurance

    Using the same numbers, assume an insurance payment of $8,000 is also available.

    AGC = 25,000 - 10,000 - 8,000 = 7,000

    After accounting for the insurance payment, the remaining uncovered amount is $7,000.

    How to Interpret the Result

    • Positive result: There is still a balance that needs to be covered.
    • Zero result: The amount owed has been fully covered.
    • Payments above the total: The displayed unpaid balance is zero; the general mode reports the excess separately.

    When This Calculator Is Useful

    • Auto financing: Estimate how much balance remains after down payments or reimbursements.
    • Vehicle loss scenarios: Compare a payoff amount against payments already made and any insurance settlement.
    • Equipment or asset financing: Measure the unpaid difference on financed property.
    • Loan planning: See how much is left to cover after a lump-sum payment.
    • Budgeting: Identify the exact shortfall before making another payment decision.

    Input Tips for Better Accuracy

    • Use the same currency for every field.
    • Make sure all values are based on the same point in time.
    • Only include amounts that have actually been paid or are reasonably expected to be applied.
    • If you include taxes, fees, or add-ons in total cost, keep your other inputs on that same basis.
    • For insurance-related estimates, distinguish between the total amount owed and the amount already paid by you.

    Common Mistakes

    • Confusing total purchase price with current remaining balance.
    • Entering an expected reimbursement as part of the amount already paid.
    • Mixing gross totals with net payouts.
    • Using values from different dates, which can distort the result.

    Frequently Asked Questions

    What does gap coverage mean?

    Gap coverage is the amount still left to cover after subtracting what has already been paid from the total cost or balance.

    Is a lower gap coverage value better?

    Usually, yes. A lower value means less remains unpaid. A value of zero means the balance has been fully covered.

    Can this calculator be used outside of car loans?

    Yes. The same math works for any situation involving a total amount and partial payments, including equipment purchases, service balances, and other financed costs.

    Should I include insurance in the basic calculation?

    Not unless you are specifically trying to estimate the remaining uncovered portion after insurance. For the basic formula, use only total cost and amount already paid.

    What if I only know the gap coverage and the amount paid?

    For a positive known gap, add it to the payment or net settlement to obtain the total. With a zero gap, that exact inverse is not determined; use the range shown by the relevant mode.

    TC = GC + AP

    This makes the calculator flexible whether you are solving for the remaining gap, reconstructing the total cost, or checking how much has already been paid.