Can You Stack Uninsured/Underinsured Motorist (UM/UIM) Policies After a Serious Crash in Oregon? How ORS 742.504 & Batten v. State Farm Work

Blog  ·  October 20, 2026  ·  By Kaith Sheikhly, Oregon personal injury attorney

After a Serious Crash in Portland, Beaverton, Tigard, or Across Oregon, $25,000 Is Often Not Enough

A high-speed rear-end collision on I-5, I-84, or I-205 in Portland, a multi-car pileup through the US-26 (Sunset Highway) tunnel or Highway 217 interchange, or a serious intersection crash along Powell Boulevard, 82nd Avenue, Barbur Boulevard, TV Highway, or Canyon Road in Beaverton and Tigard can change your family's life in seconds. Whether your car or truck collision occurred in the Portland metro area, the Willamette Valley, Central Oregon, or Southern Oregon, emergency trauma care, surgery, and hospitalization can quickly exceed basic auto insurance limits before rehabilitation even begins.

Then comes the second shock: you discover the driver who hit you was carrying only Oregon's minimum required bodily injury liability insurance of $25,000 per person and $50,000 per accident under ORS 806.070(2). Worse yet, when you turn to your own auto insurance carrier — or multiple household policies — for Underinsured Motorist (UIM) benefits, the adjuster points to fine print in your policy ("other insurance" or "anti-stacking" clauses) and claims your policies cannot be combined, or tries to deduct your Personal Injury Protection (PIP) medical payments directly from your policy limits.

In Oregon, what your insurance policy says and what Oregon law actually requires can be two very different things. Under Oregon legislative reforms and appellate decisions, injured Oregonians statewide have important statutory protections to challenge unenforceable insurance clauses, stack applicable layers of UM/UIM and PIP coverage, and pursue full compensation permitted by law.

1. The "Floating Layer" Framework: How UIM Works Under ORS 742.502 & ORS 742.504

Prior to 2016, Oregon used a restrictive "limits-to-limits" reduction rule for Underinsured Motorist coverage. Under that former rule, if the at-fault driver had $50,000 in liability insurance and you carried $50,000 in UIM coverage, your UIM policy limit was reduced dollar-for-dollar by the at-fault driver's liability payment — leaving you with $0 in UIM benefits, even if your medical expenses and total damages were far higher.

When the Oregon Legislature enacted Senate Bill 411 (Or Laws 2015, ch 5, effective for all policies issued or renewed on or after January 1, 2016), it substantially revised ORS 742.502 and ORS 742.504:

• UIM is Now a "Floating Layer" of Coverage: Under current Oregon law, UIM coverage no longer disappears simply because policy limits match. Instead, UIM acts as a floating layer of protection that sits on top of the at-fault driver's liability limits up to the total amount of your provable economic and noneconomic damages.
• How the Math Works Today: Instead of reducing your UIM policy limits by the at-fault driver's liability limits, Oregon law compares the at-fault driver's liability payment against your total damages (ORS 742.502(2); ORS 742.504(7)(c)). For example, if an at-fault driver on I-5 in Portland, Highway 99W in Tigard, or Canyon Road in Beaverton carries $25,000 in liability coverage and you carry $100,000 in UIM coverage, and your provable total damages are $125,000 or more, your $100,000 UIM policy sits on top of the tortfeasor's $25,000 payment — providing up to $125,000 in combined coverage.
• Did You Actually Sign a Written Election for Lower UIM Limits? Under ORS 742.502(2)(a)–(b), every motor vehicle liability policy in Oregon must provide UM/UIM limits equal to your bodily injury liability limits unless a named insured signs a written election for lower limits within 60 days of the time the named insured makes the election, and that statement states the comparative price for coverage equal to the bodily injury liability limits. If an insurer cannot produce a compliant written election signed as required by statute, Oregon courts may reform the policy to provide UM/UIM limits matching the policy's full bodily injury liability limits.

2. Challenging "Anti-Stacking" Clauses: Batten v. State Farm & Erickson v. Farmers

What happens when more than one UM/UIM policy applies to your crash — for example, when you are a passenger in a friend's vehicle, a pedestrian or cyclist struck in a Portland, Beaverton, or Tigard crosswalk, an injured rideshare driver or passenger, or an insured covered under multiple separate household policies anywhere in Oregon?

Insurance policies frequently include "Other Insurance," "Escape," or "Anti-Stacking" clauses stating that if multiple policies apply, recovery is capped at the single policy with the highest limit.

In Oregon, ORS 742.504 sets out a comprehensive statutory model policy that establishes a floor of mandatory coverage. Under ORS 742.502(1)(b) and ORS 742.504, any policy provision that is less favorable to the insured than the statutory model in ORS 742.504 is unenforceable.

Erickson v. Farmers Insurance Co. (Striking Unenforceable Escape & Pro-Rata Clauses)

In Erickson v. Farmers Insurance Co. of Oregon, 331 Or 681, 21 P3d 90 (2001), an injured passenger was covered under both the host vehicle's policy and her own policy. Her insurer attempted to enforce an "escape clause" denying coverage while occupying a non-owned car, while also including a pro-rata clause. The Oregon Supreme Court held that when an insurer writes an impermissible, less-favorable anti-stacking or escape clause into its policy, courts do not rewrite the policy to insert permissible insurer-friendly statutory limitations under ORS 742.506. Instead, the unenforceable language is stricken from the policy, allowing the applicable coverages to stack.

Batten v. State Farm (Stacking Multiple Policies Up to Your Provable Damages)

In Batten v. State Farm Mutual Automobile Insurance Co., 368 Or 538, 495 P3d 1222 (2021), the Oregon Supreme Court examined post-SB 411 stacking under ORS 742.504(9). State Farm sought to enforce policy language limiting a pedestrian and a bicyclist covered under multiple State Farm policies to the single policy with the highest limit. The Supreme Court held that State Farm's other-coverage limitation was less favorable to the insured than ORS 742.504(9) and therefore unenforceable, allowing the insured claimants to stack the multiple applicable UM/UIM policies up to the full amount of their damages.

(Note on Occupied Vehicles & "Regular Use" Exclusions: If you are injured while occupying a vehicle you do not own, ORS 742.504(9)(a)(A)–(B) generally makes the host vehicle's UM/UIM coverage primary and your personal UM/UIM coverage excess insurance that applies above the host vehicle's limit up to your total damages. In addition, when insurers raise "owned-vehicle" or "furnished for regular use" exclusions under ORS 742.504(4)(b), recent Oregon appellate decisions closely examine both the policy text and the facts: in Sheppard v. Progressive Classic Ins. Co., 375 Or 262 (2026), the Oregon Supreme Court held that whether a vehicle is "furnished for regular use" turns on the insured's right to use the vehicle and reversed summary judgment for the insurer due to disputed facts; and in Walker v. Progressive Universal Ins. Co., 352 Or App 287 (2026), the Court of Appeals held a policy's "four-wheel" regular-use exclusion unenforceable under ORS 742.504. Because every policy and fact pattern is unique, an attorney should review the exact policy endorsements.)

3. Multi-Impact Collisions: "Number of Accidents" Under Wright v. Turner

Major crashes on I-5, I-205, I-84, Highway 217, or US-26 sometimes involve chain-reaction impacts with more than one negligent driver or successive collisions seconds apart. Auto policies typically state two limits on their declarations page: a "per-person" limit and a higher "per-accident" limit (for example, $100,000 per person / $300,000 per accident).

When an insured is struck by two different vehicles in a chain-reaction crash, did one "accident" occur, or two? In Wright v. Turner, 354 Or 815, 322 P3d 476 (2014) (Wright II) and Wright v. Turner, 368 Or 207, 489 P3d 102 (2021) (Wright III), the Oregon Supreme Court analyzed how "number of accidents" and limit-of-liability clauses apply in UIM claims involving multiple impacts. Depending on the specific policy language and whether the evidence establishes distinct, separate proximate causes or successive events rather than a single uninterrupted occurrence, more than one "accident" may be involved.

4. Can Your Insurer Deduct PIP Payments from Your UIM Limit? How ORS 742.542 & Farmers v. Conner Work

Every Oregon private passenger auto policy must include Personal Injury Protection (PIP) under ORS 742.520 and ORS 742.524, which provides at least $15,000 in reasonable and necessary medical expenses incurred within two (2) years after the date of injury (ORS 742.524(1)(a)) and 70% of lost wages up to $3,000 per month for an aggregate of 52 weeks after a 14-day disability period (ORS 742.524(1)(b)), regardless of fault. Furthermore, under Padilla v. State Farm Mutual Automobile Insurance Co., 314 Or App 300 (2021) and Harvick v. State Farm Mutual Automobile Insurance Co., 314 Or App 474 (2021), mandatory PIP benefits apply on a per-policy basis and can stack when multiple policies cover the injured person (with primary/excess priority governed by ORS 742.526).

A frequent question after a crash is: "Can my auto insurer subtract the $15,000 it paid in PIP medical bills directly from my UIM policy limits?"

Here is how Oregon law governs the relationship between PIP and UM/UIM under ORS 742.542, ORS 742.544, and Farmers Insurance Co. of Oregon v. Conner, 219 Or App 337, 182 P3d 878 (2008):

1. PIP Offsets Total Damages, Not Your UM/UIM Policy Limits: Under ORS 742.542 and ORS 742.504(7)(c), an insurer's payment of PIP benefits offsets the total damages calculation (to prevent a double recovery for the same medical bills), but it is not deducted from your UM/UIM policy limits.
2. When Damages Exceed Combined Limits, PIP and UM/UIM Stack: As illustrated in the Oregon State Bar's Torts treatise, suppose you have $50,000 in UM/UIM limits and receive $15,000 in PIP benefits. If your total economic and noneconomic damages are $50,000, the $15,000 in PIP offsets damages so you receive $35,000 in net UM/UIM benefits. However, if your total damages are $65,000 or more, you can recover the full $50,000 in UM/UIM policy limits in "new money" on top of the $15,000 in PIP benefits already paid.
3. Insurers Cannot Use PIP Reimbursement to Defeat UIM Stacking (Farmers v. Conner): In UIM cases, an insurer may attempt to require that the at-fault driver's $25,000 liability policy reimburse its $15,000 PIP payment first, which would reduce the insured's net recovery and prevent PIP and UIM from stacking. In Farmers Ins. Co. v. Conner, 219 Or App at 356, the Oregon Court of Appeals held that a PIP/UIM insurer cannot enforce PIP reimbursement from the tortfeasor's liability proceeds when doing so would defeat the insured's right to stack PIP and UIM benefits under ORS 742.542.
4. The "Make-Whole" Rule of ORS 742.544: Under ORS 742.544(1) (as amended in 2019, effective Jan. 1, 2020; see also earlier legislative history discussed in Gaucin v. Farmers Ins. Co., 209 Or App 99, 146 P3d 370 (2006)), a PIP insurer is entitled to reimbursement only to the extent that the total amount of benefits paid exceeds the economic damages suffered by the injured person, and the injured person must first be fully compensated for all injuries before the insurer may take reimbursement from excess recovery.

Speak With an Oregon Personal Injury & Wrongful Death Attorney — Serving Portland, Beaverton, Tigard & Clients Statewide

If you or a loved one were seriously injured or killed in a crash on I-5, I-84, I-205, Highway 217, US-26, TV Highway, Canyon Road, or any roadway in Oregon, an attorney at Sheikhly Law can review every potentially applicable insurance policy and guide your family through the Multnomah County, Washington County, Clackamas County, Marion County, or local Oregon circuit court process. If your crash resulted in a fatal injury, read our companion guide on Oregon wrongful death probate under ORS 114.453 and settlement division under ORS 30.030.

Contact our office today or call (971) 545-8622 for a free, confidential consultation in English or Arabic.

Frequently Asked Questions

What is the statute of limitations for a personal injury car accident in Oregon?

Under ORS 12.110(1), the general statute of limitations for a personal injury claim in Oregon is two (2) years from the date of the injury. Additionally, if you have an Uninsured or Underinsured Motorist (UM/UIM) claim under your own auto policy, ORS 742.504(12)(a) permits policies to require that within two (2) years from the date of the accident (a contractual period that is not tolled by minority under Wright v. State Farm Mutual Automobile Insurance Co., 223 Or App 357 (2008)) you must either conclude a settlement agreement, formally institute arbitration proceedings, file a direct action against the insurer, or file a bodily injury lawsuit against the uninsured/underinsured motorist. Missing this two-year window can bar both your third-party tort claim and your UM/UIM coverage.

Can my insurance company deduct PIP payments from my Underinsured Motorist (UIM) policy limits in Oregon?

No. Under ORS 742.542 and Farmers Insurance Co. of Oregon v. Conner, 219 Or App 337 (2008), Personal Injury Protection (PIP) payments only offset total damages to prevent double recovery — they do not reduce your UM/UIM policy limits. Furthermore, under ORS 742.544, a PIP insurer cannot take reimbursement out of your settlement unless and until you first receive full compensation for your injuries, and only to the extent total benefits paid exceed your economic damages.

How do contingency fees and ORS 742.061 insurance attorney-fee shifting work in Oregon?

Personal injury, UM/UIM, and wrongful death cases are handled on a written contingency fee basis under Oregon Rule of Professional Conduct 1.5: no attorney fee unless we recover for you, and if there is no recovery, you owe nothing — including case costs (in wrongful death and conservatorship matters, all attorney fees and cost reimbursements are subject to probate court approval). In addition, under ORS 742.061(1), if an insurance company fails to settle a PIP or UM/UIM claim within six months from the date proof of loss is filed, an action is brought in court, the plaintiff's recovery exceeds the amount of any tender made by the insurer, and the insurer does not qualify for the statutory safe harbor under ORS 742.061(2)–(3), the court shall award reasonable attorney fees to be paid by the insurer. Furthermore, when a PIP insurer recovers through a statutory lien (ORS 742.536) or subrogation (ORS 742.538(1)), it must bear a proportionate share of the claimant's attorney fees and expenses.

What is the 180-day Oregon Tort Claims Act (OTCA) notice requirement for government vehicles?

If your injury or a loved one's death involved a public body or government employee in Oregon (such as TriMet, ODOT, the City of Portland, the City of Beaverton, the City of Tigard, Multnomah County, Washington County, Clackamas County, or a school district), the Oregon Tort Claims Act (ORS 30.275) requires notice of claim to be received by the designated public body within 180 days after a non-fatal injury (excluding up to 90 days — for a maximum of 270 days — during which the injured person is unable to give notice because of the injury, minority, incompetency, or other incapacity under ORS 30.275(2)(b)), or within one (1) year for a wrongful death claim under ORS 30.275(2)(a).

What is the deadline to file a wrongful death lawsuit in Oregon?

Under ORS 30.020(1), an Oregon wrongful death action must generally be commenced within three (3) years after the injury causing the death of the decedent is discovered or reasonably should have been discovered, and no later than the earliest of three years after the decedent's death or the expiration of an applicable statute of ultimate repose (such as the 10-year repose in ORS 12.115(1)). Important Exception: If the wrongful death claim is against a public body or government employee — such as TriMet, ODOT, a city, or a county — the Oregon Tort Claims Act (ORS 30.275(9)) overrides ORS 30.020 and establishes a two (2) year statute of limitations (Van Wormer v. City of Salem, 309 Or 404 (1990)).

What if the at-fault driver also died in the collision?

Under ORS 30.080, a personal injury or wrongful death claim does not abate upon the death of the wrongdoer, but you cannot sue a deceased person in their individual name. Under ORS 30.090, if no probate of the wrongdoer's estate has been initiated within 60 days after the wrongdoer's death, the injured party or wrongful-death Personal Representative may petition the probate court to appoint an administrator or personal representative for the wrongdoer's estate. Under ORS 115.005(5)(b), an action against the wrongdoer's personal representative to recover up to available liability insurance limits does not require presenting a probate creditor's claim, whereas seeking recovery from the wrongdoer's non-insurance probate estate assets requires timely presenting a formal creditor's claim under ORS 115.325 (Balthrop v. Berryman, 96 Or App 354 (1989)).

This article is general information about Oregon law, not legal advice, and reading it does not create an attorney-client relationship. Every case is different — talk to a lawyer about your specific situation.