Idaho Personal Injury Laws 2026

By Brad Burton, Founder & Editor  ·  Updated June 2026  ·  How we research this

The Idaho Statute of Limitations for Personal Injury

Idaho gives most injury victims two years to file a lawsuit. That deadline is set in Idaho Code §5-219(4), which covers actions for personal injury, wrongful death, and professional malpractice. Let that window close without filing, and the court will almost certainly dismiss the case outright — regardless of how serious the injuries are or how clear the defendant's fault may be.

The two-year clock generally starts running on the date of the accident or the negligent act. For most car crashes, slip-and-fall accidents, and assault cases, that date is straightforward. Idaho courts are strict about this: the fact that you are still treating or negotiating with an insurance company does not pause the deadline.

The Discovery Rule

Some injuries do not reveal themselves right away. Idaho law acknowledges this through a limited discovery rule. Under §5-219(4), the cause of action accrues at the time of the occurrence — but two narrow exceptions allow the period to run from a later date. First, if a foreign object is inadvertently left inside a body after a medical procedure, the clock runs from when the patient knew or should have known. Second, if the wrongdoer fraudulently and knowingly concealed the injury while in a professional or commercial relationship with the victim, the period can similarly be extended. Even within those exceptions, the action must be filed within one year of discovery or within two years of the original act — whichever is later.

Claims Against Government Entities

Accidents involving a city bus, a pothole on a state highway, or a county employee fall under the Idaho Tort Claims Act. Before suing any governmental entity or its employees, you must first file a formal notice of claim with the appropriate clerk or secretary of that entity. Idaho Code §6-906 sets that window at 180 days from the date the claim arose or was reasonably discoverable. Missing the 180-day notice deadline can permanently bar a claim that would otherwise be valid. For accidents involving Idaho Transportation Department roads or state vehicles, that notice goes to the Office of the Attorney General.

Tolling for Minors and Incapacity

Idaho Code §5-243 tolls the general limitation period for people who are minors or who lack legal capacity at the time the cause of action accrues. However, §5-219(4) specifically carves out professional malpractice from that tolling provision. Families of injured children should verify how the interplay of §5-219 and §5-243 applies to their specific facts — this is one area where the general rule has important exceptions, and early legal advice matters considerably.

Idaho's Negligence Rule: Modified Comparative Fault (50% Bar)

Idaho is a modified comparative fault state. The governing statute, Idaho Code §6-801, states that contributory negligence will not bar a plaintiff's recovery — provided the plaintiff's negligence "was not as great as" the defendant's. In plain terms: if you were less than 50% responsible for the accident, you can still recover. If you were 50% or more at fault, you recover nothing.

This 50% threshold is sometimes called the "50% bar" or the "not as great as" standard. It places Idaho in the majority of states that use modified comparative fault, but with a cutoff that is harsher than the pure comparative negligence systems used in states like California or New York, where even a plaintiff who is 99% at fault can theoretically recover 1% of their damages.

How Apportionment Works in Practice

Once the jury determines that the plaintiff's fault does not reach 50%, damages are reduced proportionally. A plaintiff found 30% at fault in a case with $200,000 in total damages would receive $140,000 — the award reduced by $60,000 (30%). Insurers and defense attorneys will regularly investigate and argue for higher plaintiff-fault percentages precisely because reaching or exceeding 50% eliminates their exposure entirely.

Idaho's comparative fault statute encompasses negligence, gross negligence, and comparative responsibility. The 1987 amendment that added "comparative responsibility" expanded the statute's reach beyond traditional negligence to include certain strict liability and products liability contexts where fault is allocated among multiple parties.

Joint and Several Liability in Idaho

Idaho substantially modified joint and several liability through the same 1987 tort reform that introduced comparative responsibility. Under current Idaho law, defendants are generally severally — not jointly — liable for non-economic damages, meaning each defendant pays only its allocated share. Joint liability for economic damages in multi-defendant cases is more limited than in states with traditional joint and several liability systems. This distinction matters when one defendant is judgment-proof: the plaintiff cannot shift that defendant's share of non-economic damages to solvent co-defendants.

Idaho's Non-Economic Damage Cap

Idaho Code §6-1603 imposes a cap on non-economic damages in personal injury and wrongful death cases. Non-economic damages include pain and suffering, emotional distress, loss of enjoyment of life, and loss of consortium — the categories that do not represent out-of-pocket financial losses. Economic damages (medical bills, lost wages, future care costs, property damage) are not capped and can be awarded in full.

The Original Cap and Annual Inflation Adjustment

The legislature originally set the cap at $250,000 in 1987 and then amended §6-1603 in 2003 to add an automatic inflation adjustment mechanism. Beginning July 1, 2004, the cap adjusts each year on July 1 in proportion to the annual percentage change in Idaho's average annual wage, as computed by the Idaho Industrial Commission under §72-409(2). The Idaho Industrial Commission publishes the updated figure each year.

The cap effective July 1, 2025 — the most recently published figure — is $509,013.28. The next annual adjustment takes effect July 1, 2026; the Industrial Commission had not yet published that figure as of the date of this update. For trials concluding before July 1, 2026, $509,013.28 is the operative ceiling. Attorneys and plaintiffs in cases that may go to trial near or after that date should verify the current figure directly with the Idaho Industrial Commission at iic.idaho.gov.

Source: Idaho Industrial Commission, per IC §6-1603. Published July 2025.

What the Cap Applies To — and What It Does Not

The cap applies to the total non-economic damages recovered by any single claimant, regardless of how many defendants contributed to those damages or how many separate lawsuits are filed. A plaintiff cannot recover $509,013 from defendant A and another $509,013 from defendant B for the same injury; the cap is per-claimant, per-incident under §6-1603(2).

Two significant exceptions exist. The cap does not apply where the defendant's conduct constitutes willful or reckless misconduct. It also does not apply where the conduct would constitute a felony under state or federal law, proven beyond a reasonable doubt. These exceptions can dramatically change the calculus in cases involving drunk driving causing serious injury, intentional assault, or corporate misconduct that rises to criminal levels. Medical malpractice cases are subject to the same §6-1603 cap — Idaho does not maintain a separate med-mal-specific limit, and the general inflation-adjusted figure governs those claims as well.

One procedural note: §6-1603(3) prohibits the jury from being told that any cap exists. Jurors deliberate on the full value of non-economic damages, and the judge applies the cap post-verdict if the jury's award exceeds the limit. This means juries in catastrophic injury cases may return awards substantially above $509,013 — but only the capped amount is entered as the judgment.

Auto Insurance and Personal Injury Claims in Idaho

Idaho operates under a traditional fault-based (tort) auto insurance system. When a collision occurs, the party at fault — or more precisely, that party's liability insurer — is responsible for compensating injured parties. There is no mandatory personal injury protection (PIP) in Idaho, which means injured drivers are not entitled to immediate first-party medical payments from their own insurer unless they purchased optional medical payments coverage.

Minimum Liability Requirements

Idaho Code §49-117(20) sets the minimum proof of financial responsibility at:

• $25,000 bodily injury per person
• $50,000 bodily injury per accident
• $15,000 property damage per accident

These 25/50/15 minimums are among the lower thresholds nationally and have not been updated to reflect modern medical costs. A single hospitalization for a serious injury routinely exceeds $25,000. Claimants whose injuries surpass the at-fault driver's policy limits frequently face a gap that can only be bridged through their own underinsured motorist (UIM) coverage.

Uninsured and Underinsured Motorist Coverage

Idaho law requires insurers to offer uninsured motorist (UM) coverage to policyholders, though consumers may reject it in writing. UM coverage protects an insured driver when the at-fault party carries no insurance. UIM coverage — which applies when the at-fault driver's limits are insufficient — is separately available and strongly advisable given Idaho's 25/50/15 minimums. Idaho does not have a mandatory UIM statute, so consumers should review their own declarations pages to confirm whether and at what level they carry this protection.

Practical Notes for Boise and Rural Idaho Accident Claims

The geographic diversity of Idaho creates meaningful practical differences in how claims proceed. A rear-end collision on I-84 in the Boise metro involves immediate access to trauma centers, established attorney networks, and active claims offices for all major carriers. A serious accident on U.S. 95 in the remote panhandle near Bonner Ferry or on Highway 21 east of Stanley may involve delayed emergency response, longer hospital transport times, and rural county court dockets that move on different schedules. Rural accidents also raise issues around agricultural vehicles, livestock on roadways, and logging or mining equipment — all of which can complicate liability and insurance coverage questions that straightforward urban crashes rarely present.

Idaho also sees substantial volumes of motorcycle accidents, snowmobile incidents during winter months, and pedestrian accidents in Boise's growing urban core. Each category carries distinct insurance and liability considerations. Snowmobile accidents occurring on U.S. Forest Service land, for instance, may implicate federal immunity questions that interact with the Idaho Tort Claims Act in non-obvious ways, and claimants in those situations benefit from early consultation with attorneys who handle both state tort and federal claims work.

Frequently Asked Questions