The rule in Idaho
Idaho uses the Total Loss Formula (repair cost + estimated salvage value vs. ACV) to decide when a damaged vehicle must be declared a total loss. Repair cost alone isn't the test — the state adds estimated salvage value to the repair estimate, and compares that combined figure to ACV.
Worked example — a $10,000.00 vehicle:
$7,500.00 repair + $1,000.00 estimated salvage = $8,500.00, which is below the $10,000.00 ACV — so this specific damage would not meet Idaho's Total Loss Formula, even though the repair estimate alone is 75% of ACV.
What this means practically
Idaho does not use a single percentage — it applies the Total Loss Formula, so a vehicle's fate depends on the combination of repair cost and expected salvage value, not repair cost alone. Two vehicles with an identical repair estimate can land on opposite sides of the total-loss line here if their salvage values differ.
How Idaho compares nationally
Idaho is one of 22 jurisdictions that use the Total Loss Formula. The other 29 use a fixed percentage of ACV, ranging from 60% to 100%.
Idaho vs. bordering states
| State | Rule | Compared with Idaho |
|---|---|---|
| Idaho | Total Loss Formula | — |
| Montana | Total Loss Formula | Same rule |
| Nevada | 65% of ACV | Different method |
| Oregon | 80% of ACV | Different method |
| Utah | Total Loss Formula | Same rule |
| Washington | Total Loss Formula | Same rule |
| Wyoming | 75% of ACV | Different method |
Across the state line — Take a $10,000.00 car with a $6,500.00 repair estimate. It is not a total loss in Idaho (Total Loss Formula, with an assumed $1,000.00 salvage value), but it is a total loss in Nevada (65% of ACV). If your accident happened near the Nevada line, check which state's rule actually applies — usually the state where the vehicle is registered and insured.
Who regulates total losses in Idaho
Total-loss rules are enforced by Idaho's insurance regulator. If you think your insurer applied the wrong threshold or undervalued your vehicle, you can file a consumer complaint there. Find the department's contact details in the NAIC directory of state insurance departments, and see how to file a complaint with your state insurance department.
Check your own numbers
The Total-Loss Threshold Checker has Idaho pre-selected from this link — enter your own repair estimate and ACV (plus an estimated salvage value) to see how they compare.
What this page can't tell you
It can't tell you Idaho's threshold with legal certainty — this reflects one compiled secondary review as of mid-2026, not a direct reading of the state's current statute or administrative code, and state rules can change. It also can't tell you what your specific vehicle's ACV or salvage value actually is; for that, see How Insurers Value a Total-Loss Vehicle and run your own numbers through the Total-Loss Offer Audit calculator.
Frequently Asked Questions
What is the total-loss threshold in Idaho?
Idaho uses the Total Loss Formula: a vehicle is a total loss once estimated repair cost plus expected salvage value meets or exceeds its actual cash value (ACV) — there's no single fixed percentage.
Does Idaho use a percentage rule or the Total Loss Formula?
The Total Loss Formula, not a simple percentage. Some neighboring states use a fixed percentage instead, so the same repair estimate can produce a different result just across a state line.
Is this the exact test my insurer will use?
It's the state-law minimum, compiled from a secondary source and one example state regulator's published methodology — not a live read of the current statute, and not necessarily identical to your insurer's own internal total-loss policy, which can be more (but not less) generous. Confirm the current rule with your state insurance department if it matters to your claim.