Illinois Bodily Injury Liability Is Mandatory
You are adding a second or third vehicle to your Illinois auto policy and need to confirm whether bodily injury liability coverage is required. Illinois law mandates bodily injury liability on every auto insurance policy, with minimum limits of $25,000 per person and $50,000 per accident. These limits apply to the policy as a whole, not to each vehicle individually.
When you insure multiple cars on one policy, the $50,000 per-accident limit is shared across all vehicles. If one vehicle causes an accident that injures multiple people, the $50,000 cap applies to the total claim, regardless of how many cars sit on your policy. This shared-limit structure surprises many multi-car households who assume each vehicle carries its own separate $50,000 bucket.
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Get Your Free QuoteIllinois Minimum Bodily Injury Limits
$25,000 / $50,000
Illinois requires $25,000 per person and $50,000 per accident in bodily injury liability coverage on every auto policy. These are the lowest legal limits you can carry to register and drive a vehicle in the state.
Illinois Department of Insurance
The Per-Accident Limit Covers All Vehicles on the Policy
The $50,000 per-accident limit is a single pool of coverage that applies to any accident caused by any vehicle on your policy. If your household owns three cars and one of them causes an accident that injures two people, the $50,000 limit covers both injured parties combined. It does not reset for each vehicle.
This shared structure means that adding a second or third vehicle to your policy does not increase your bodily injury liability protection. The per-accident cap remains $50,000 whether you insure one car or five. If you want higher protection for a multi-vehicle household, you raise the per-accident limit on the policy itself.
Many drivers mistakenly believe that insuring multiple vehicles multiplies their liability protection. The per-person limit of $25,000 applies to each individual injured in an accident, but the per-accident limit of $50,000 is the total available for all injuries in a single incident, regardless of which vehicle on your policy caused it.
The $50,000 per-accident limit is shared across all vehicles on your policy. Adding a car does not increase your liability protection.
How Bodily Injury Liability Works Across Multiple Vehicles
The per-person limit of $25,000 applies to each individual injured in an accident. If one person is hurt, your policy pays up to $25,000 for their medical bills, lost wages, and pain and suffering. If two people are injured, each can claim up to $25,000. But the per-accident limit of $50,000 caps the total payout for all injuries combined in that single incident.
Your policy pays only $50,000 because that is the per-accident cap. The remaining $25,000 is your personal liability. This gap exists whether the accident involves one vehicle on your policy or one of several. The per-accident limit does not scale with the number of cars you insure.
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Raising Limits for Multi-Car Households
Multi-car households often carry higher bodily injury limits than the state minimum because the risk of a serious accident increases with more vehicles on the road. These higher limits cost more per month but close the gap between the policy cap and the actual cost of a multi-injury accident.
Raising your per-accident limit protects your household assets if one of your vehicles causes an accident that injures several people. Without higher limits, you are personally liable for any damages above the $50,000 cap. If your household owns multiple vehicles, a home, or other assets, that personal liability can reach those assets in a lawsuit.
Carriers price bodily injury liability based on the policy's total exposure, which includes the number of vehicles, the drivers on the policy, and each driver's record. Adding a vehicle to an existing policy re-rates the entire policy, and the bodily injury premium adjusts to reflect the additional car. The per-accident limit you choose applies to all vehicles equally.
Illinois Uninsured Motorist Rate
15.2%
Approximately 15.2% of Illinois motorists drive without insurance. When an uninsured driver injures you, your own uninsured motorist bodily injury coverage pays your medical bills and lost wages up to your policy's limits.
Insurance Research Council, 2023
Uninsured Motorist Bodily Injury Coverage Mirrors Your Liability Limits
Illinois requires uninsured motorist bodily injury coverage on every auto policy, and the limits must match your bodily injury liability limits unless you request lower coverage in writing. If you carry $25,000 per person and $50,000 per accident in liability, your uninsured motorist coverage defaults to the same $25,000/$50,000 structure.
This mirroring rule ensures that you have the same level of protection when an uninsured driver injures you as you provide to others when you cause an accident. For multi-car households, this means the uninsured motorist per-accident limit is also shared across all vehicles. If an uninsured driver hits one of your cars and injures multiple household members, the $50,000 per-accident cap applies to the total claim.
Compare Carriers That Write Multi-Vehicle Policies in Illinois
Not every carrier prices bodily injury liability the same way for multi-car households. Some carriers offer better multi-vehicle discounts that lower the per-vehicle cost when you insure two or more cars on one policy. Others price each vehicle separately and add them together, which can result in a higher total premium even with a discount applied.
Illinois has 30 carriers writing auto insurance in the state, including standard, preferred, and non-standard tiers. Carriers like State Farm, Geico, Progressive, Allstate, and Farmers all write multi-vehicle policies and offer online quotes. Compare quotes from at least three carriers to see how each prices your specific household's vehicles, drivers, and coverage limits. The bodily injury liability premium is part of the total policy cost, and it varies significantly by carrier for the same limits.