Car insurance in Idaho

What Idaho law requires you to carry

Idaho is a mandatory liability insurance state. Before you drive, your vehicle needs a liability policy that meets at least these limits:

Drivers usually see this written as 25/50/15. These limits are confirmed by the Idaho Department of Insurance (doi.idaho.gov).

Two things people misunderstand about those numbers:

• Liability insurance pays other people, not you. It covers injuries and property damage you cause. Damage to your own car is only covered if you buy collision or comprehensive, which Idaho does not require.
• The minimums are a legal floor, not a recommendation. A single hospital stay or a newer pickup can blow past $25,000 or $15,000 quickly, and anything above your limit is your personal problem — the injured party can pursue you for the rest.

What Idaho does not require: personal injury protection (PIP) is not mandatory here, and there is no no-fault medical system. Uninsured and underinsured motorist coverage are not mandatory either, but there is an important wrinkle — see the UM/UIM section below.

For scale: the National Association of Insurance Commissioners put the average Idaho expenditure at $981 in 2023 for liability, collision and comprehensive combined, per insured vehicle. That is a statewide average across all drivers, cars and coverage levels — not a quote, and not what any particular driver will pay.

Fault, and how a claim actually plays out

Idaho is an at-fault (tort) state. The driver who caused the crash — through their insurer — is responsible for the resulting injuries and damage. There is no no-fault pool and no obligation to use your own medical coverage first.

After a crash where your car is damaged, the Idaho DOI describes two routes:

1. A first-party claim — against your own policy. This only works if you bought collision (impact with another vehicle, a fixed object, an object in the road, or a rollover) or comprehensive (theft, vandalism, animal strikes, falling objects, glass, fire, wind, hail, flood). Your insurer repairs the car or pays its value if repairs exceed what the car is worth, minus your deductible.
2. A third-party claim — against the at-fault driver's insurer. That insurer only pays to the extent its policyholder is legally responsible, and only up to its policyholder's limits. As the Department notes, that may not fully cover your loss.

Practical consequences:

• Fault is first decided by adjusters, not a judge. Insurers investigate, weigh statements, photos, the police report and physical evidence, and assign responsibility. If you disagree, you can push back with evidence, escalate to a supervisor, complain to the Department, or sue.
• Fault can be shared. If the other side argues you were partly responsible, expect a proportional offer rather than a flat denial. If injuries or liability are seriously disputed, talk to an Idaho attorney — the Department is explicit that its guidance is general information, not legal advice.
• Using your own collision coverage is often faster. You pay the deductible up front; if your insurer recovers from the at-fault carrier, your deductible normally comes back to you in whole or part.
• Don't assume the other insurer is on your side. It owes duties to its own policyholder. Keep your own record: photos, names, the crash report number, repair estimates and medical bills.

The Department's auto claims FAQ also covers repair-shop choice, non-OEM parts, rental reimbursement, storage fees, total-loss valuation and what to do if a claim is denied: doi.idaho.gov/consumer/FAQ/AutoThirdFAQ.

UM/UIM: already on your policy unless you sign it away

This is the single most Idaho-specific rule, and the one most worth understanding.

Uninsured motorist (UM) and underinsured motorist (UIM) bodily injury coverage are not mandatory in Idaho — but by law every auto liability policy includes them unless the named insured rejects them in writing, which may be done electronically. That requirement, and the standard disclosure form insurers must use, sit in Department rule 18.02.02 (PDF).

• UM can pay for injuries caused by a driver with no insurance at all, or by a hit-and-run driver who is never identified.
• UIM can pay when the at-fault driver has insurance but not enough to cover your injuries.

You can buy UM and UIM in varying amounts at or above Idaho's minimum liability limits.

Know which flavour of UIM you're buying. The Department's disclosure spells out that insurers offer different types and are not required to offer more than one:

• "Difference in Limits" (or offset) UIM — the most common. Your UIM limit is reduced by what you recover from the at-fault driver. If both of you carry the same limit, your UIM adds nothing.
• "Excess" UIM — your limit stacks on top of what the at-fault driver's insurer pays, so the total available is larger.

So before you sign anything, ask the agent two questions: am I keeping UM and UIM? and is the UIM offset or excess? If you ever signed a rejection and now want the coverage back, you simply ask your insurer to add it.

Optional coverage worth paying for in Idaho

Everything beyond liability is voluntary and priced separately. The ones that earn their keep for most Idaho drivers:

• Collision and comprehensive. If you have a loan or lease, the lender will require them anyway. Comprehensive is doing real work in a state with long rural highways, deer and elk, gravel-chipped windshields, hail and wildfire smoke-and-fire risk. Deer and falling-rock damage is comprehensive, not collision.
• UM/UIM bodily injury — covered above. Keep it.
• Medical payments (MedPay). Idaho requires no PIP, so there is no automatic injury coverage on your policy. MedPay pays medical bills for you and your passengers regardless of fault, with no deductible and no waiting for a liability fight to settle. It is usually one of the cheapest line items on the policy.
• Rental reimbursement and roadside assistance. Useful if you're a long way from a shop — which in much of Idaho you are. The Department's FAQ notes a liability insurer only reimburses rental to the extent its insured is responsible, so your own rental coverage fills the gap when fault is disputed.
• Higher liability limits, or an umbrella policy. The cheapest way to protect savings, home equity and future wages. Going from 25/50/15 to a six-figure limit is almost always a smaller increase than people expect.
• Gap coverage on a financed new car, where the loan balance can exceed the car's value.
• Custom equipment coverage if you've added a canopy, lift, winch, racks or an aftermarket stereo — stock policies cap or exclude these.

Rules and habits Idaho drivers trip on

• Signing the rejection without reading it. The UM/UIM disclosure is a form you are asked to sign at the point of sale. Signing in the wrong box strips coverage from every renewal and replacement of the policy until you ask for it back.
• Assuming the state minimum is "full coverage." 25/50/15 is the legal floor. "Full coverage" is a sales phrase, not a legal category.
• Thinking liability repairs your own car. It does not. No collision or comprehensive means you pay for your own vehicle when you're at fault, when the other driver is uninsured and you rejected UM, or when a deer walks out.
• Credit history affects pricing. Idaho insurers may use credit-based insurance scores in rating. A thin or damaged credit file can move your price, and improving it over time can help. Ask your insurer whether it re-runs the score at renewal.
• Letting coverage lapse between cars or policies. A gap can cost you continuous-coverage discounts and creates exposure on every day you drive.
• Forgetting to update garaging address, commute or drivers. A household teen who regularly drives the car generally needs to be listed. Misstating the facts can complicate a claim.
• Treating the adjuster's first number as final. Estimates get supplemented, total-loss valuations can be challenged with comparable local listings, and you can request the data behind the valuation.
• Not reading the renewal declarations page. Limits, deductibles and listed vehicles drift. One minute a year catches most mistakes.

If you want the underlying law, Idaho's insurance code is Title 41 (legislature.idaho.gov); the Department's administrative rules, including 18.02.02 on automobile policies, are at doi.idaho.gov. Vehicle registration and proof-of-insurance enforcement are handled on the motor-vehicle side of state government, so check there for what to carry in the car and what happens if you're caught without it.

If something goes wrong: complaining to the Idaho Department of Insurance

The Idaho Department of Insurance regulates insurers and agents in the state and runs a Consumer Affairs section that reviews complaints about claim handling, delays, denials, cancellations and sales conduct.

Before you file:

1. Put your complaint to the insurer in writing and ask for the reason for its decision, in writing, with the policy language it relies on.
2. Gather your policy number, claim number, the adjuster's name, dates, and copies of estimates, denial letters and correspondence.

Then file with the Department:

• Online complaint form: doi.idaho.gov/consumers/file-a-complaint/
• Consumer Affairs by phone: 208-334-4319; the Department's general consumer line is 208-334-4250 or, in Idaho, 800-721-3272
• General consumer information: doi.idaho.gov/consumers/

What to expect. The Department contacts the company, requires a written response, and checks whether the insurer followed Idaho law and the policy. It can require a company to correct a violation, and complaint patterns feed into its oversight of carriers. What it cannot do is decide a contested question of fact for you — who was at fault, or how badly you were hurt. Those belong to a court. A complaint also doesn't pause any deadline for suing, so if your claim is large or disputed, get Idaho legal advice in parallel.

Suspected insurance fraud goes to a separate channel: doi.idaho.gov/consumers/insurance-fraud/. You can verify that an agent or company is licensed in Idaho through the NAIC lookup linked from the Department's site.