The two systems in plain terms
At-fault (tort) system. After a crash, the driver who caused it is legally responsible for the other people's injuries and property damage. Injured people typically claim against the at-fault driver's liability insurance or sue. Your own coverages, such as MedPay, collision and uninsured motorist, can help while fault is sorted out.
No-fault system. Each driver's own personal injury protection (PIP) pays medical bills and certain other losses for themselves and their passengers, regardless of fault. In return, the right to sue the other driver for pain and suffering is limited unless the injury passes a legal threshold. Triple-I notes that no-fault laws apply to injuries; claims for vehicle damage are generally still based on fault.
Which states use no-fault?
According to Triple-I, 12 states and Puerto Rico have no-fault auto insurance laws. They differ in the type of threshold that limits lawsuits:
| System | States |
|---|---|
| No-fault with a verbal threshold | Florida, Michigan, New Jersey, New York, Pennsylvania |
| No-fault with a monetary threshold | Hawaii, Kansas, Kentucky, Massachusetts, Minnesota, North Dakota, Utah |
| "Choice" no-fault, where drivers can reject the lawsuit limits | Kentucky, New Jersey, Pennsylvania |
The remaining states generally use traditional at-fault systems, though some add required or optional first-party benefits (see below). Several states, including Colorado, Connecticut, Georgia and Nevada, once had no-fault laws and later repealed them. Laws change, so confirm your state's current system with its Department of Insurance or on its page in our state directory.
Verbal vs. monetary thresholds
- Verbal threshold. You can step outside the no-fault system and sue the other driver only if your injury meets a description in the law, such as a serious injury, significant disfigurement or death.
- Monetary threshold. You can sue once your medical costs pass a dollar amount set by state law. The amounts differ by state.
Below the threshold, your own PIP handles your injury costs. Above it, you can pursue a claim against the at-fault driver, usually for pain and suffering and costs beyond PIP, much like in an at-fault state.
Whether an injury meets a verbal threshold is often disputed, since terms like "serious" or "permanent" must be proved with medical evidence. That's one reason people with significant injuries in no-fault states often seek legal advice about whether they qualify to sue.
Choice states: limited vs. full right to sue
Triple-I explains that in Kentucky, New Jersey and Pennsylvania, drivers may reject the lawsuit threshold and keep the right to sue for any auto-related injury. In practice:
- Pennsylvania offers "limited tort" and "full tort" options. Limited tort usually costs less but restricts suits for pain and suffering unless the injury is serious.
- New Jersey offers a "limitation on lawsuit" option with a verbal threshold, or no limitation for a higher price.
- Kentucky lets drivers reject the no-fault limits on their right to sue, which is paired with a monetary threshold.
The trade-off is premium savings up front versus your ability to recover pain and suffering damages later. Read your state's disclosure forms carefully before choosing.
At-fault states that add first-party benefits
Some at-fault states require or encourage PIP-style coverage without limiting lawsuits. These are sometimes called "add-on" states. For example, Oregon's DMV lists personal injury protection among required coverages, and Maryland requires insurers to include PIP, which some policyholders can waive. Other states require insurers to offer PIP or MedPay, which you can decline. In these states, you get quicker payment of medical bills from your own policy but keep your full right to sue the at-fault driver.
Pros and cons of each system
| Feature | No-fault | At-fault |
|---|---|---|
| Speed of medical payments | Usually faster, since your own insurer pays without deciding fault | Can be slower if fault is disputed, unless you have MedPay |
| Right to sue | Limited below the threshold | Generally available |
| Required coverage | PIP plus liability, which can raise premiums | Liability, with PIP or MedPay optional in many states |
| Small injury claims | Kept out of court more often | More often handled through liability claims or lawsuits |
No-fault systems were designed to pay injured people quickly and reduce lawsuits over small claims. Critics point to fraud and rising PIP costs in some states. Either way, the system you live in shapes which coverages matter most.
What your state's system means for you
| Question | At-fault state | No-fault state |
|---|---|---|
| Who pays my medical bills first? | The at-fault driver's liability insurer, or your MedPay or health insurance while fault is decided | Your own PIP |
| Can I sue for pain and suffering? | Yes, subject to normal legal rules | Only if your injury passes the threshold |
| Who pays for my car? | The at-fault driver's insurer, or your collision coverage | Generally the same, based on fault |
| Required coverages | Liability, sometimes UM and PIP | Liability plus PIP, sometimes UM |
Required PIP adds to the cost of coverage, but NAIC data shows no-fault states range from some of the highest average premiums to some of the lowest, because local costs matter as much as the system. See our PIP and MedPay guide and check your state's required coverages with the coverage checker.
After a crash: steps in each system
- In any state, handle the scene the same way: safety, police when required, information exchange and photos.
- In a no-fault state, file your injury claim with your own insurer's PIP coverage promptly, since some states set short deadlines.
- In an at-fault state, file with the other driver's insurer, your own MedPay, or both.
- For car damage, file with the at-fault driver's insurer or use your own collision coverage.
- If injuries are serious, learn whether they may meet your state's threshold. See what happens after a car accident for when people typically consult an attorney.
Frequently asked questions
What does no-fault car insurance mean?
It means each driver's own personal injury protection pays their injury costs after a crash, regardless of who caused it, and lawsuits for pain and suffering are limited unless injuries meet a legal threshold.
Which states are no-fault states?
Florida, Hawaii, Kansas, Kentucky, Massachusetts, Michigan, Minnesota, New Jersey, New York, North Dakota, Pennsylvania and Utah, plus Puerto Rico, according to Triple-I.
What is a choice no-fault state?
A state where drivers can choose whether to accept limits on their right to sue. Triple-I lists Kentucky, New Jersey and Pennsylvania as choice states.
Does no-fault insurance cover damage to my car?
Generally no. No-fault laws apply to injuries. Vehicle damage is still usually handled by fault through liability or your own collision coverage.
Can you sue in a no-fault state?
Yes, if your injuries meet the state's verbal or monetary threshold, or if you're in a choice state and kept your full right to sue.
Related guides
- PIP vs. Medical Payments Coverage: How Your Car Insurance Pays for Injuries
- What Happens After a Car Accident: Claims, Rate Increases and When People Call a Lawyer
- Minimum Car Insurance Requirements: What "30/60/25" Means and Why It's Rarely Enough
- Uninsured and Underinsured Motorist Coverage: How UM/UIM and Stacking Work
How we estimate this
This guide explains general rules and practices. Insurance terms vary by state, insurer and policy — check your policy documents and your state insurance department for the rules that apply to you. For cost estimates, try our calculators. Read the full methodology.