Extended warranty refund calculator: estimate the unused portion

Collect the inputs from your agreement

Use the service-contract purchase price, not the vehicle’s price, a deductible or the total of every finance-office add-on. Identify whether the coverage clock starts at the vehicle’s original in-service date or the later contract purchase date.

For mileage, find both the starting odometer and the expiration odometer. If coverage begins at 40,000 miles and ends at 100,000, the covered allowance is 60,000 miles. Using 100,000 as the denominator would overstate the unused portion. For a sale or trade, use the effective date and mileage the provider agrees to accept.

• Purchase price of this specific product.
• Total term and time used under the contract’s method.
• Total covered mileage allowance and miles used.
• Applicable cancellation fee and claim deduction, if any.
• Whether the agreement uses time, mileage or the lesser unused fraction.

Understand the illustrative formula

Unused time fraction = (total term − elapsed term) ÷ total term. Unused mileage fraction = (covered mileage allowance − miles used) ÷ covered mileage allowance. For a lesser-unused-fraction method, multiply price by the smaller fraction, then subtract allowed deductions.

The Honda Care form reviewed describes the lesser unused time-or-mileage approach. Other contracts can differ in rounding, claim treatment, early-cancellation rules, taxes and fees. This estimator supports three simple methods so you can compare assumptions; it does not determine which method your agreement requires.

Sources: Honda Care: cancellation form hosted by Saccucci Honda (older form; verify current version)

Worked example: a $3,000 service contract

Suppose a hypothetical agreement costs $3,000, provides 60 months and 60,000 covered miles, and is canceled after 18 months and 24,000 covered miles. Time remaining is 70%; mileage remaining is 60%. Using the smaller remaining percentage produces $1,800 before deductions.

If that hypothetical contract allows a $50 cancellation fee and a $200 claims deduction, the estimated refund is $1,550. Those fees are example inputs, not a statement of what your provider charges. The refund recipient is a separate question from the calculation.

Why the actual refund may differ

Early cancellation may use a full-refund provision instead of proration. A claim may change that treatment. A monthly renewable plan may not have a multi-year unused balance at all. State amendments may alter the fee or formula, and an expired agreement may have no remaining value.

Do not add deductions twice. If an administrator supplies a net amount, ask for the gross amount and itemized deductions before comparing it with this calculator. If the contract price itself was financed, the lender may receive the approved amount even when the calculation is correct.

Sources: Ford Protect: national sample contract and state amendments (October 2023) · Endurance: cancellation, mileage evidence and refunds

Use the estimate to ask better questions

Send the administrator your inputs and ask which assumption differs from its result. A discrepancy in the start date can be more important than a small fee. Ask for the exact mileage baseline, approved effective date, rounding rule and treatment of claims.

Keep the estimate with your records, clearly labeled as your calculation. Do not represent it as an approved refund or use it to promise money toward another purchase. The most useful output is an itemized comparison that the provider can confirm or correct.