No-fault auto insurance is a system where each driver files injury claims with their own insurer after an accident, regardless of who caused it. At-fault (also called "tort") auto insurance is a system where the driver who caused the accident is responsible for the other party's damages, and claims are filed against the at-fault driver's insurer. The system your state uses determines what coverages you're required to carry, how claims are processed after an accident, and whether you can sue the other driver for pain and suffering.
Twelve states currently operate under a no-fault system. Three of those give drivers a choice between no-fault and at-fault coverage. The remaining 38 states and Washington D.C. use an at-fault system. Florida has debated leaving the no-fault system for years; repeal bills passed in 2021 (vetoed) and were filed again in 2025 and 2026 without becoming law.
How at-fault states work
In the 38 at-fault states, someone is responsible for every accident. The at-fault driver's liability insurance pays for the other party's injuries and property damage. If you're not at fault, you file a claim against the other driver's insurer (called a "third-party claim") or let your insurer handle it through subrogation.
After an accident in an at-fault state:
The insurance companies investigate and assign fault. The at-fault driver's bodily injury liability coverage pays the injured party's medical bills, lost wages, and pain and suffering. The at-fault driver's property damage liability pays for the other party's vehicle damage. If the at-fault driver's limits aren't high enough, the injured party can sue for the remainder. If you're not at fault, your own insurance isn't supposed to pay for the other driver's damages (your UM/UIM coverage may apply if the other driver is uninsured or underinsured — see our deep dive on what happens if you're hit by an uninsured driver).
Required coverage in at-fault states: Bodily injury liability and property damage liability. Some at-fault states also require UM/UIM coverage. PIP or medical payments coverage may be optional.
Your right to sue: Unrestricted. If someone injures you in an at-fault state, you can sue them for economic damages (medical bills, lost wages) and non-economic damages (pain and suffering) without meeting any threshold.
How no-fault states work
In no-fault states, the claims process starts differently. After an accident, each driver files an injury claim with their own insurance, regardless of who caused the crash. This coverage is called Personal Injury Protection (PIP).
After an accident in a no-fault state:
You file a PIP claim with your own insurer. Your PIP coverage pays your medical bills, a portion of lost wages, and sometimes essential services (like childcare while you're recovering). Property damage still follows fault rules in most no-fault states. The at-fault driver's property damage liability covers the other party's vehicle.
Required coverage in no-fault states: In addition to liability coverage, you must carry PIP. PIP minimums range from $2,500 in Utah to $250,000+ in Michigan (where drivers can choose their PIP level).
Your right to sue: Restricted. In most no-fault states, you can only sue the at-fault driver if your injuries exceed a defined threshold. This threshold is either a dollar amount (your medical bills exceed a certain figure) or a verbal threshold (your injuries qualify as "serious" under the state's definition, such as permanent disfigurement, bone fracture, or loss of a body part). The lawsuit restriction is the core trade-off of the no-fault system: faster claims in exchange for limited legal recourse.
The 12 no-fault states
| State | PIP Minimum | Sue Threshold |
|---|---|---|
| Florida | $10,000 | Permanent injury, scarring, or death |
| Hawaii | $10,000 | $5,000 in medical costs or serious injury |
| Kansas | $4,500 | $2,000 in medical costs or serious injury |
| Kentucky* | $10,000 | $1,000 in medical costs or serious injury |
| Massachusetts | $8,000 | $2,000 in medical costs or serious injury |
| Michigan | $250,000+ (multiple tiers) | Serious impairment of body function or death |
| Minnesota | $40,000 | $4,000 in medical costs or serious injury |
| New Jersey* | $15,000 | Depends on policy type (verbal or dollar threshold) |
| New York | $50,000 | Serious injury (verbal threshold) |
| North Dakota | $30,000 | $2,500 in medical costs or serious injury |
| Pennsylvania* | $5,000 medical benefits | Serious injury (verbal threshold) |
| Utah | $3,000 | $3,000 in medical costs or serious injury |
*Kentucky, New Jersey, and Pennsylvania are "choice no-fault" states. Drivers can opt out of the no-fault system and retain full tort rights (unrestricted ability to sue). Opting out typically means higher premiums.
What PIP covers that liability doesn't
PIP is sometimes confused with medical payments coverage (MedPay), but PIP is broader. While MedPay only covers medical bills, PIP can also cover:
Lost wages. If you miss work because of accident injuries, PIP reimburses a percentage of your lost income (often 80% in many states).
Essential services. If you can't do household tasks during recovery (cleaning, childcare), some states' PIP policies cover the cost of hiring someone to help.
Funeral expenses. PIP typically includes a funeral benefit, often $2,000 to $5,000.
Rehabilitation costs. Physical therapy, occupational therapy, and other recovery-related expenses.
The scope varies by state. Michigan's PIP has historically been the broadest (and most expensive), while Utah's $3,000 minimum is among the most limited. For a full state-by-state comparison of what's required, see the 2026 State Minimums Chart or the interactive State Minimum Coverage page.
Why no-fault states tend to cost more
Auto insurance premiums are generally higher in no-fault states because the PIP coverage requirement adds cost to every policy, and the no-fault system historically experiences higher rates of insurance fraud. Claims paid regardless of fault can create incentive problems.
Three of the most expensive states for auto insurance in the country, Michigan, New York, and New Jersey, are all no-fault states. This is not a coincidence. The mandatory PIP coverage and the broader benefits drive higher overall premiums.
Florida's transition to at-fault
Florida keeps trying to leave no-fault. The legislature passed a repeal in 2021 that the governor vetoed, and new repeal bills in 2025 and 2026 died in committee. If a repeal ever passes, expect PIP to disappear and bodily injury liability to become mandatory. Until then, Florida drivers still need $10,000 PIP and $10,000 property damage, and bodily injury liability remains optional but strongly recommended.
If you're a Florida driver, pay close attention to your Dec page at your next renewal. The coverage structure will look very different from what you're used to.
Frequently asked questions
If I live in a no-fault state, does that mean no one is at fault in an accident?
No. Fault is still determined for purposes of property damage claims, premium surcharges, and whether you meet the threshold to sue. "No-fault" refers specifically to how injury claims are handled: each driver files with their own insurer first.
Do I still need UM/UIM coverage in a no-fault state?
Yes, and it's required in most no-fault states. Your PIP coverage only pays your own injury expenses. UM/UIM protects you when the at-fault driver doesn't have insurance or enough insurance to cover your damages beyond PIP, especially if your injuries meet the threshold for a lawsuit. See our deep dive on uninsured motorist coverage for the full picture.
If I drive from an at-fault state into a no-fault state, which rules apply?
Generally, the rules of the state where the accident occurs apply to how the claim is handled. If you're in an accident in a no-fault state, PIP rules may apply to the injury claim. Your own policy should adjust to meet the requirements of the state you're in.
Can I choose no-fault coverage if I live in an at-fault state?
No. The system is determined by your state's law, not your personal preference. In at-fault states, you can add MedPay or PIP (where available) for some of the same benefits, but the fault-based claims process and unrestricted right to sue still apply.
Check your Dec page
If you live in a no-fault state, look for your PIP coverage line and confirm the benefit amount. If you live in an at-fault state, make sure you have adequate liability limits and UM/UIM coverage.
Either way, upload your Dec page to the free PolicyLector Dec Page Analyzer for a plain-English breakdown of how your specific coverage interacts with your state's system.
For a full chapter on no-fault insurance, PIP coverage, and how the two systems compare in practice, see Auto Insurance Decoded.
Sources referenced in this article:
- Insurance Information Institute: "No-fault auto insurance" (iii.org)
- Nationwide: "States with No-Fault Insurance" (nationwide.com)
- Kiplinger: "States With No-Fault Car Insurance Laws" (February 2026)
- Experian: "Car Insurance Laws by State 2026" (March 2026)
- WalletHub: PIP states list and no-fault state analysis