The Coverage You Bought for the Worst Crash Is the One You Are Most Likely to Throw Away, and the Act That Throws It Away Looks Like Progress

A driver runs a red light, causes catastrophic injuries, and turns out to carry a $50,000 liability policy. The at-fault insurer offers its limits within a month. Taking that money feels like the first good news since the crash.

Sign the release without telling your own insurer first, and you can end the far larger claim you already paid for.

Uninsured and underinsured motorist coverage — UM and UIM — is the part of a Minnesota auto policy that exists for exactly the case where the other driver can’t pay. It’s mandatory. It’s often the biggest asset in the file. And unlike almost every other coverage, the way you lose it is something the injured person does voluntarily, believing it’s the right move.

Minnesota doesn’t let you decline it

Most states make UM or UIM an optional coverage a buyer can waive in writing. Minnesota doesn’t. Minn. Stat. § 65B.49, subd. 3a(1) states:

No plan of reparation security may be renewed, delivered or issued for delivery, or executed in this state with respect to any motor vehicle registered or principally garaged in this state unless separate uninsured and underinsured motorist coverages are provided therein. Each coverage, at a minimum, must provide limits of $25,000 because of injury to or the death of one person in any accident and $50,000 because of injury to or the death of two or more persons in any accident. In the case of injury to, or the death of, two or more persons in any accident, the amount available to any one person must not exceed the coverage limit provided for injury to, or the death of, one person in any accident.

Clause (2) puts the duty on the vehicle owner too: “Every owner of a motor vehicle registered or principally garaged in this state shall maintain uninsured and underinsured motorist coverages as provided in this subdivision.”

That mandate has two limits you should know:

• Clause (3): “No reparation obligor is required to provide limits of uninsured and underinsured motorist coverages in excess of the bodily injury liability limit provided by the applicable plan of reparation security.” A policy with $100,000 in liability coverage need not carry more than $100,000 in UM/UIM.
• Clause (4): “No recovery shall be permitted under the uninsured and underinsured motorist coverages of this section for basic economic loss benefits paid or payable, or which would be payable but for any applicable deductible.” UM/UIM does not duplicate no-fault benefits.

The Legislature also wrote two ownership exclusions straight into the mandate. Clause (7) says the required coverages “do not apply to bodily injury of the insured while occupying a motor vehicle owned by the insured, unless the occupied vehicle is an insured motor vehicle,” and clause (8) says they “do not apply to bodily injury of the insured while occupying a motorcycle owned by the insured.” Your UM/UIM doesn’t follow you into an uninsured vehicle sitting in your own driveway.

The two coverages answer different questions, and the definitions live in a different section. Under Minn. Stat. § 65B.43, subd. 16, an “uninsured motor vehicle” is one “for which a plan of reparation security meeting the requirements of sections 65B.41 to 65B.71 is not in effect.” Under subd. 17, an “underinsured motor vehicle” is one “to which a bodily injury liability policy applies at the time of the accident but its limit for bodily injury liability is less than the amount needed to compensate the insured for actual damages.”

The heart of it: Minnesota subtracts what was paid, not what was available

This calculation decides how much a UIM claim is worth, and it’s where states genuinely split.

• In a difference-in-limits state, the UIM insurer’s exposure is its own limit minus the tortfeasor’s liability limit. If both are $100,000, the UIM claim is worth nothing, no matter how large the damages are.
• In an excess or add-on state, the UIM insurer pays the damages that weren’t recovered from the at-fault driver, capped at the UIM limit. If both limits are $100,000 and damages are $400,000, the UIM claim is worth $100,000.

Minnesota’s operative text is the second kind. Minn. Stat. § 65B.49, subd. 4a reads in full:

With respect to underinsured motorist coverage, the maximum liability of an insurer is the amount of damages sustained but not recovered from the insurance policy of the driver or owner of any underinsured at fault vehicle. If a person is injured by two or more vehicles, underinsured motorist coverage is payable whenever any one of those vehicles meets the definition of underinsured motor vehicle in section 65B.43, subdivision 17. However, in no event shall the underinsured motorist carrier have to pay more than the amount of its underinsured motorist limits.

Look at what isn’t there. There’s no subtraction of the tortfeasor’s limits, and no comparison between the two policies’ declared limits. The measure is damages minus what was recovered, with the UIM limit as a ceiling.

That language came out of a legislative reversal, and the history explains why the older cases read the other way. The 1985 Legislature had written subd. 4a as a difference-in-limits provision. In Broton v. Western National Mutual Insurance Co., 428 N.W.2d 85 (Minn. 1988), the supreme court quoted the version then in force:

Subd. 4a. Liability on underinsured motor vehicles. With respect to underinsured motor vehicles, the maximum liability of an insurer is the lesser of the difference between the limit of underinsured motorist coverage and the amount paid to the insured by or for any person or organization who may be held legally liable for the bodily injury; or the amount of damages sustained but not recovered.

Broton held that this language meant what the 1985 sponsors said it meant — that the legislative purpose was “to return the calculation of the available amount of UIM coverage to a difference of limits basis,” 428 N.W.2d at 88 — and reversed a plaintiff who had damages over $100,000, a $100,000 tortfeasor limit, and $100,000 in UIM coverage. His UIM claim was worth zero.

The Legislature fired back the next session. Laws 1989, ch. 213, is captioned “An act relating to insurance; clarifying the calculation of underinsured motorist benefits; amending Minnesota Statutes 1988, section 65B.49, subdivisions 3a and 4a.” Section 2 struck the phrase “the lesser of the difference between the limit of underinsured motorist coverage and the amount paid to the insured by or for any person or organization who may be held legally liable for the bodily injury; or” and added “from the insurance policy of the driver or owner of any underinsured at fault vehicle.” Section 3 made the change “effective for all contracts issued or renewed on or after August 1, 1989, or for all injuries occurring on or after August 1, 1989, or for deaths occurring as the result of injuries sustained on or after August 1, 1989.”

You can see the post-amendment rule at work in Malmin v. Minnesota Mutual Fire & Casualty Co., 552 N.W.2d 723 (Minn. 1996). The insured was hit by a driver carrying a $50,000 liability limit; his own UIM limit was $300,000; a jury awarded him $158,973.96; the tortfeasor’s insurer paid its $50,000; and the UIM claim was for “approximately $109,000.” Malmin, 552 N.W.2d at 724. That’s damages minus what was paid. Not $300,000 minus $50,000, and not zero.

Bottom line: the difference-in-limits reflex — “their limits equal my limits, so I have no UIM claim” — is a reflex left over from a superseded statute. Read subd. 4a as it stands now.

One caution. Broton was construing the 1985 text, and Schmidt v. Clothier, 338 N.W.2d 256 (Minn. 1983), discussed below, was construing a 1978 provision that has since been repealed. How the current “not recovered” language interacts with a below-limits settlement is something to work through on the actual policy language and the actual numbers. Don’t assume it from either older opinion.

Anti-stacking is absolute, but the priority rule still gives you a choice

Minnesota doesn’t let you add UM/UIM limits on multiple vehicles together. Subd. 3a(6) is about as emphatic as statutory drafting gets:

Regardless of the number of policies involved, vehicles involved, persons covered, claims made, vehicles or premiums shown on the policy, or premiums paid, in no event shall the limit of liability for uninsured and underinsured motorist coverages for two or more motor vehicles be added together to determine the limit of insurance coverage available to an injured person for any one accident.

Insuring four cars doesn’t buy four times the UM/UIM protection for one crash. That’s worth knowing before renewal, not after.

But subd. 3a(5) — the priority provision — isn’t a dead end, and people routinely misread it as one:

If at the time of the accident the injured person is occupying a motor vehicle, the limit of liability for uninsured and underinsured motorist coverages available to the injured person is the limit specified for that motor vehicle. However, if the injured person is occupying a motor vehicle of which the injured person is not an insured, the injured person may be entitled to excess insurance protection afforded by a policy in which the injured party is otherwise insured. The excess insurance protection is limited to the extent of covered damages sustained, and further is available only to the extent by which the limit of liability for like coverage applicable to any one motor vehicle listed on the automobile insurance policy of which the injured person is an insured exceeds the limit of liability of the coverage available to the injured person from the occupied motor vehicle.

If at the time of the accident the injured person is not occupying a motor vehicle or motorcycle, the injured person is entitled to select any one limit of liability for any one vehicle afforded by a policy under which the injured person is insured.

That paragraph gives you three rules:

1. Occupied vehicle first. The vehicle you were in supplies the primary UM/UIM limit.
2. A passenger in someone else’s car may reach up to their own policy. If the occupied vehicle isn’t one you’re insured on, your own policy can supply excess protection — but only the amount by which your per-vehicle limit exceeds the occupied vehicle’s limit, and only up to your covered damages.
3. A pedestrian or bicyclist picks. If you weren’t occupying a motor vehicle or motorcycle at all, you “select any one limit of liability for any one vehicle afforded by a policy under which the injured person is insured.”

People frequently confuse anti-stacking with rule 3. You can’t add limits together. You can choose which single limit applies.

The four-year clock that applies to UIM and not to UM

The 2023 Legislature added Minn. Stat. § 65B.49, subd. 10, headnoted “Time limitations”:

(a) Unless expressly provided for in this chapter, a plan of reparation security must conform to the six-year time limitation provided under section 541.05, subdivision 1, clause (1).

(b) The time limitation for commencing a cause of action relating to underinsured motorist coverage under subdivision 3a is four years from the date of accrual.

The enacting section, Laws 2023, ch. 57, art. 2, § 58, carries this effective-date clause: “This section is effective August 1, 2023, and applies to contracts issued or renewed on or after that date.”

Here’s what to take from that text.

The four years applies to underinsured motorist coverage, and paragraph (b) says so. Paragraph (a) supplies a six-year default for plans of reparation security generally, by reference to Minn. Stat. § 541.05, subd. 1, clause (1). Paragraph (b) carves out UIM and only UIM. An uninsured motorist claim isn’t named in paragraph (b).

The statute keys to the contract, not to the crash. By its own effective-date clause, subd. 10 applies to contracts “issued or renewed on or after” August 1, 2023. For a long-tail claim, the question is when the policy was written or renewed.

And “the date of accrual” isn’t defined in the subdivision. The statute doesn’t say the date of accrual is the crash, the date of the tortfeasor’s payment, the date of a denial, or anything else. That’s a genuine open question, and you should treat it as one. In practice that means calendaring from the earliest defensible trigger, not the most favorable one.

The act that forfeits the claim: settling with the at-fault driver first

Here’s the trap, and it’s about procedure, not substance.

A UIM carrier that pays benefits has a potential subrogation right against the at-fault driver. That right depends on the order things happen in. As the supreme court put it in Schmidt v. Clothier, 338 N.W.2d 256 (Minn. 1983): “If the tortfeasor is released before payment by the insurer, however, no subrogation rights ever arise.” Schmidt, 338 N.W.2d at 262 (citation omitted). So the court built a procedure around the tentative settlement:

Thus, the underinsurer is entitled to notice of the tentative settlement and an opportunity to protect those potential rights by paying underinsurance benefits before release.

Schmidt, 338 N.W.2d at 263. The court described what the underinsurer may do with that window — let it expire and accept the settlement, in which case it “must, of course, thereafter process the underinsurance claim but would not be able to recover those payments through subrogation”; or “substitute its payment to the insured in an amount equal to the tentative settlement,” preserving subrogation while the insured still gets the settlement amount in cash. Id. And the court set the length of the window:

We conclude that in the future 30 days from the written notice of the tentative settlement agreement is a more reasonable time period, and so the procedure set out in the district court orders should hereafter be modified.

Id. Written notice. Thirty days. Before the release is signed.

The Broton court summed up the risk of skipping it in one sentence: “an UIM insured who settles with and releases an underinsured tortfeasor without notifying the UIM insurer does so at his or her peril.” 428 N.W.2d at 90.

Two related points on what a UIM insurer may and may not demand of its insured:

• Exhaustion clauses are void. Schmidt held “that exhaustion clauses are void as against the policies of the no-fault act,” and that the insured “may recover underinsurance benefits where the total damages sustained (as determined by either arbitration or judgment) exceed the limits of the tortfeasor’s liability policy even where the insured settles with the tortfeasor for less than the liability limits.” 338 N.W.2d at 261.
• Consent-to-sue clauses are void, but notice-of-suit clauses aren’t. In Malmin, the court held “that a consent to sue clause which requires written consent from the insurer before the insurer will be bound by a judgment against a tortfeasor is contrary to the purposes of the No-Fault Automobile Insurance Act.” 552 N.W.2d at 728. In the same breath it approved the lesser requirement, noting that “a provision within an insurance contract which requires the insured to notify his or her insurer of the commencement of a lawsuit against a tortfeasor within a limited period of time (i.e., 60 days) after service of process comports with due process principles and does not raise the same concerns under the No-Fault Act.” Id. at 728 n.4.

Malmin also records the sequencing rule from Employers Mutual Cos. v. Nordstrom, 495 N.W.2d 855 (Minn. 1993): “an injured motorist must pursue his or her claim against the tortfeasor to trial or settlement before seeking UIM benefits from his or her insurer.” Malmin, 552 N.W.2d at 726 (describing Nordstrom).

Put it together: you must resolve the tort claim first, you must tell the UIM carrier before you release, and the policy may lawfully require you to tell it when suit is filed. Someone handling a claim without a lawyer has no reason to know any of those steps exist.

What to do

1. Find every policy before you value anything. Your own; the policy on the vehicle you were riding in; a resident relative’s policy; an employer’s policy if you were working. Priority under subd. 3a(5) turns on which vehicle you occupied and whether you’re an insured on it.
2. Read the declarations page, not the summary. UM/UIM limits are separate line items from bodily-injury liability limits. Because subd. 3a(3) allows the UM/UIM limit to be capped at the liability limit, raising your liability limits is often what raises UM/UIM.
3. Don’t sign a release. Don’t cash the check. Give the UIM carrier written notice of the tentative settlement and let the Schmidt window run before anything is executed.
4. Put the notice in writing and keep proof of the date. Schmidt counts thirty days “from the written notice of the tentative settlement agreement.” A phone call doesn’t start that clock.
5. Calendar UIM separately from everything else. For a policy issued or renewed on or after August 1, 2023, subd. 10(b) gives four years from accrual — a shorter period than the six-year contract default and, for a UIM claim, potentially shorter than the tort claim it grows out of.
6. Don’t assume a matching-limits crash is worthless. Under the current text of subd. 4a the offset is what was recovered, not the tortfeasor’s limits.
7. Document the denial or the delay. A UIM claim is a first-party claim against your own insurer, which is a different legal relationship than a claim against the other driver — and Minnesota has a specific statutory mechanism for an insurer’s unreasonable handling of a first-party claim, covered in our piece on what Minnesota actually created instead of a bad-faith tort.

The strange part

Almost every other way people lose an insurance claim is by not doing something: a missed deadline, an unreturned form, a lapsed premium. UIM is the exception. You lose it by doing something, and the something looks like the most obviously correct move available.

The at-fault insurer offers its limits. The offer is real, you need the money, and taking it looks like pure gain. It can also be the release of the tortfeasor before the UIM carrier has had its thirty days — the one act Broton described as proceeding “at his or her peril.”

On the substance of UIM, Minnesota law is unusually generous. The coverage is mandatory. Exhaustion clauses are void. Consent-to-sue clauses are void. The offset runs against what was actually paid, not against the other driver’s limits.

All that generosity sits behind a sequence that’s easy to break and hard to fix. Learn the sequence before the check shows up.

Madgett Law, LLC handles Minnesota auto injury claims, including uninsured and underinsured motorist claims under Minn. Stat. § 65B.49. If an insurer has offered you its limits, the step to take before you sign anything is a written notice to your own carrier. Send us a message or call 612-470-6529.

Sources: Minn. Stat. § 65B.49 (2025) (subd. 3a(1)–(8), mandatory separate uninsured and underinsured motorist coverages, $25,000/$50,000 minimum limits, no obligation to exceed the bodily injury liability limit, no recovery for basic economic loss benefits, priority and excess protection, anti-stacking, owned-vehicle and owned-motorcycle exclusions; subd. 4a, liability on underinsured motor vehicles; subd. 10(a)–(b), time limitations); Minn. Stat. § 65B.43 (2025) (subd. 16, “uninsured motor vehicle”; subd. 17, “underinsured motor vehicle”); Minn. Stat. § 541.05, subd. 1(1) (six-year period referenced by § 65B.49, subd. 10(a)); Laws 1989, ch. 213, §§ 1–3 (act “clarifying the calculation of underinsured motorist benefits”; amendment of subd. 4a; effective date); Laws 2023, ch. 57, art. 2, § 58 (adding subd. 10; “This section is effective August 1, 2023, and applies to contracts issued or renewed on or after that date”) (Minnesota Office of the Revisor of Statutes). Broton v. Western National Mutual Insurance Co., 428 N.W.2d 85 (Minn. 1988) (construing the 1985 version of § 65B.49, subd. 4a as a difference-of-limits provision, at 87–89; legislative purpose at 88; holding and “at his or her peril” at 90). Schmidt v. Clothier, 338 N.W.2d 256 (Minn. 1983) (subrogation arises only on payment before release, at 262; exhaustion clauses void, at 261; underinsurer entitled to notice of tentative settlement, substitution of payment, and 30 days from written notice, at 263). Malmin v. Minnesota Mutual Fire & Casualty Co., 552 N.W.2d 723 (Minn. 1996) (facts and amount at issue, at 724; describing Employers Mutual Cos. v. Nordstrom, 495 N.W.2d 855 (Minn. 1993), at 726; consent-to-sue clause void, at 728; notice-of-suit provision permissible, at 728 n.4). Employers Mutual Cos. v. Nordstrom, 495 N.W.2d 855 (Minn. 1993), is cited here only as described in Malmin. The meaning of “the date of accrual” in § 65B.49, subd. 10(b), and the interaction of the current text of subd. 4a with a below-limits settlement, are identified above as open questions and are not resolved here. This article is general legal information about Minnesota law, not legal advice, and reading it does not create an attorney–client relationship. Every case depends on its own facts and on the language of the particular policy. No outcome is promised or implied.