Idaho Uninsured Motorist Coverage Rules

If the driver who hit you in Idaho had no insurance, or carried the state minimum and your bills ran past it, the coverage that steps in is your own uninsured and underinsured motorist protection. Idaho has firm rules about how that coverage is sold, how much you can collect, and one Idaho Supreme Court decision that changed payouts at the lowest policy limits. Here is what actually applies in this state.

Every Idaho auto policy carries it unless you reject it in writing

Idaho Code § 41-2502 says no motor vehicle liability policy can be issued in the state unless it includes both uninsured motorist (UM) and underinsured motorist (UIM) coverage for bodily injury or death.¹ The only way out is a rejection: the named insured can decline UM, UIM, or both, but the rejection has to be in writing or in an electronic record, and once made it applies to everyone else insured under the policy and carries forward into renewals from the same company.¹ The Idaho Department of Insurance describes the rule the same way and requires carriers to give you an "Idaho Uninsured Motorist and Underinsured Motorist Disclosure Form" that explains the coverages and lets you reject either one.²

A second disclosure rule matters just as much. For any new policy or first renewal with an effective date on or after January 1, 2009, the insurer has to give you a standard statement, approved by the director of the Department of Insurance, that explains both UM and UIM coverage and the different forms of UIM sold in Idaho.¹ That last phrase is not filler. Idaho sells UIM in two very different shapes, and which one you bought decides what you actually collect.

How much coverage you have

Idaho's minimum liability limits are $25,000 per person and $50,000 per accident for bodily injury, plus $15,000 for property damage, the familiar 25/50/15.³ Your UM and UIM limits usually track the bodily injury liability limits you picked, so a policy written at state minimums carries $25,000 per person and $50,000 per accident in UM/UIM unless you buy more.²

Two Idaho details are easy to miss. First, the statute covers bodily injury or death, not property damage.¹ If an uninsured driver crushes your car, UM will not pay to repair it. That falls to your collision coverage or a direct claim against the driver, and any lost resale value is a separate diminished value claim. A lawsuit over vehicle damage in Idaho has a three-year deadline under Idaho Code § 5-218(3).⁴ Second, "uninsured" reaches further than a driver with no policy at all. Under Idaho Code § 41-2503 it also covers a driver whose insurer has gone insolvent and cannot pay, while an "underinsured" vehicle is one that carries at least the minimum limits but still not enough to cover what you lost.⁵

Excess versus offset, and why the Pena decision changed the math

The two forms of UIM the disclosure statement warns about are "excess" (sometimes called add-on) and "difference in limits" (also called offset). Excess coverage stacks your UIM on top of whatever the at-fault driver's insurer pays. Offset coverage subtracts what you already received from the other driver before it pays, which can shrink your UIM to almost nothing at low limits.

In 2022 the Idaho Supreme Court drew a hard line at the bottom of the market. In Pena v. Viking Insurance Co. of Wisconsin, 503 P.3d 201 (Idaho 2022), the court held that a minimum-limits offset policy "provides illusory coverage," because after the offset the insured collected nothing for a premium they had paid.⁶ The Department of Insurance turned that ruling into instructions for every carrier. Bulletin No. 22-04, issued May 4, 2022, tells insurers that offset provisions are unenforceable on minimum-limits UIM policies, and that UIM claims on those policies arising on or after February 1, 2022 must be paid without the offset, meaning as excess coverage.⁶ Above the minimum limits the court left offset provisions intact, so the illusory-coverage rule applies specifically at the floor.⁶

You do not have to drain the other driver's policy first

Idaho also killed off a trap that some UIM policies once used. In Hill v. American Family Mutual Insurance Co., 150 Idaho 619, 249 P.3d 812 (2011), the Idaho Supreme Court struck down "exhaustion clauses," the fine print that forced you to collect the full limits of the at-fault driver's policy before your own UIM would respond.⁷ The court held those clauses void as against Idaho public policy: the legislature required insurers to offer real UIM protection, not coverage rigged to switch on only after every last dollar of the other policy was gone.⁷ In plain terms, you can settle with the at-fault driver's insurer for the amount actually on the table and still go after your own UIM for the rest.

The deadline is not the two-year injury clock

This is where people get burned. A claim against the driver who hit you is a personal injury claim, and Idaho gives you two years from the crash to file it under Idaho Code § 5-219(4).⁸ But a UM or UIM claim is different. You are making a claim under your own insurance contract, so Idaho courts treat it as a contract action, and the limitations period for a written contract is five years under Idaho Code § 5-216.⁹

Do not let the longer number lull you. Your policy carries its own conditions, prompt written notice and often a requirement that you tell your UIM carrier before you settle with the at-fault driver, and blowing past those can sink a claim well before any statute runs. Report the crash, order the Idaho crash report, put your insurer on notice in writing, and if the money is serious or the carrier stalls, talk to a lawyer through the legal directory before you sign anything.

This article is general information about Idaho law, not legal advice.

Sources

Idaho State Legislature, Idaho Code § 41-2502 (uninsured and underinsured motorist coverage). https://legislature.idaho.gov/statutesrules/idstat/title41/t41ch25/sect41-2502/
Idaho Department of Insurance, Required Auto Coverage. https://doi.idaho.gov/consumers/auto-insurance/required-auto-coverage/
Idaho State Legislature, Idaho Code § 49-117 (financial responsibility limits). https://legislature.idaho.gov/statutesrules/idstat/title49/t49ch1/sect49-117/
Idaho State Legislature, Idaho Code § 5-218(3) (three-year limit for injury to property). https://legislature.idaho.gov/statutesrules/idstat/title5/t5ch2/sect5-218/
Idaho State Legislature, Idaho Code § 41-2503 (definitions of uninsured and underinsured motor vehicle). https://legislature.idaho.gov/statutesrules/idstat/title41/t41ch25/sect41-2503/
Idaho Department of Insurance, Bulletin No. 22-04, "Underinsured Motorist Coverage at Minimum Limits, Pena v. Viking Decision" (May 4, 2022), applying Pena v. Viking Insurance Co. of Wisconsin, 503 P.3d 201 (Idaho 2022). https://doi.idaho.gov/wp-content/uploads/ID/B22-04.pdf
Hill v. American Family Mutual Insurance Co., 150 Idaho 619, 249 P.3d 812 (Idaho 2011). https://scholar.google.com/scholar_case?case=10469469083789544435
Idaho State Legislature, Idaho Code § 5-219(4) (two-year limit for personal injury). https://legislature.idaho.gov/statutesrules/idstat/title5/t5ch2/sect5-219/
Idaho State Legislature, Idaho Code § 5-216 (five-year limit on written contracts). https://legislature.idaho.gov/statutesrules/idstat/title5/t5ch2/sect5-216/

Uninsured Motorist Coverage Rules in Idaho