How to Change Uninsured Motorist Coverage Limits on an Existing Policy
Raising or lowering uninsured and underinsured motorist limits changes the amount of protection available under an existing policy. The useful questions are not only “How much coverage do I want?” but also when the change becomes effective, how the premium changes, which UM/UIM coverages are affected, and what documentation confirms the new limits.
NAIC explains that the declarations page identifies important policy details such as the coverage limits, policy term, and insured vehicles [1]. Before requesting a change, use that page to confirm the limits that are active now.
Before changing an active policy, understanding the amount of UM/UIM protection you choose makes it easier to compare the new limit with the protection you already carry.
What Changes When You Raise or Lower a UM/UIM Limit?
A coverage limit is the maximum amount the policy may pay under that coverage, subject to the policy terms and the covered loss. Changing a UM/UIM limit changes that ceiling; it does not automatically change every other part of the policy.
For bodily injury coverage, limits are often displayed as a per-person amount and a per-accident amount. Property-damage protection, where available, may have its own limit and deductible. The exact structure depends on the state and policy.
Per-person limit
The most the coverage may pay for one covered injured person, subject to the policy.
Per-accident limit
The maximum available for all covered injured people from one accident under a split-limit structure.
Property-damage limit
Where UMPD is available, vehicle or other covered property losses may use a separate limit and deductible.
Can You Change UM/UIM Limits in the Middle of a Policy Term?
Often, an insurer can modify an existing policy through an endorsement or similar policy-change document. NAIC notes that endorsements can be issued at purchase, mid-term, or at renewal, can modify coverage, and may change the premium [2].
That does not mean every limit is available at every time. Insurers can have different limit menus, and state law can affect which UM/UIM choices or forms are permitted. Ask the insurer for the effective date before assuming a higher limit applies to a future accident.
Mid-term change
The insurer may issue an endorsement or revised declarations page showing the new limit and effective date. A prorated premium adjustment may follow.
Renewal change
The new limit can be selected for the next policy term, with the renewal declarations page showing the coverage that will apply.
If UM/UIM is not on the policy at all, adding UM/UIM to an active policy is a different change than simply increasing a limit that is already listed.
How to Change Your UM/UIM Limits
Confirm the current limits
Use the declarations page to identify UMBI, UIMBI, UMPD, deductibles, and any related coverage selections.
Request specific alternatives
Ask for two or three available limit levels rather than asking only for “more” or “less” coverage.
Compare the premium difference
Ask for the exact term or prorated premium change for each option, not only the monthly payment.
Confirm the effective date
Find out when the revised limit begins. A request today does not necessarily mean the change is already in force.
Save the revised documents
Keep the endorsement, revised declarations page, confirmation number, and any selection or rejection forms.
When Raising the Limit Can Make Sense
A higher limit can be worth reviewing when the amount you would need to absorb after an uninsured- or underinsured-driver loss has increased. The right level depends on the coverage, passengers, income, savings, state rules, and the losses the policy is designed to cover.
Reasons to quote higher limits
- You regularly carry passengers.
- Your income or household obligations increased.
- You have limited savings for a large uncovered loss.
- Your current limit is materially below your liability protection.
- Your driving exposure or commute increased.
Questions before increasing
- How much does each higher limit add to the premium?
- Does the change affect UMBI, UIMBI, UMPD, or more than one?
- Will a new deductible or form apply?
- When will the higher limit become effective?
- Does the selected limit fit the rest of the policy?
When Lowering the Limit Needs Extra Care
Reducing a UM/UIM limit can lower the premium, but the savings should be compared with the protection removed. Ask for the actual dollar difference before assuming the lower limit creates meaningful savings.
| Change | Possible premium effect | What to verify |
|---|---|---|
| Higher bodily injury limits | Usually increases premium. | Per-person and per-accident limits, passengers, and the exact added term cost. |
| Lower bodily injury limits | May reduce premium. | How much protection is lost compared with the actual savings. |
| Change property-damage protection | Depends on state and policy. | UMPD availability, vehicle value, deductible, collision coverage, and hit-and-run rules. |
| Reject or remove coverage | Can reduce premium. | Whether state law requires a signed rejection or other selection form. |
Do UM/UIM Limits Have to Match Liability Limits?
Not under one universal national rule. State laws and insurer offerings differ. Some drivers choose similar bodily injury liability and UM/UIM limits so the protection they buy for themselves and passengers is not far below the protection they carry for claims from others.
The better approach is to ask which limit combinations are available in your state, whether a lower selection requires a form, and how much each option changes the premium. Do not rely on a generic rule of thumb if the policy documents show something different.
Compare Limit Options Before Making the Change
When several insurers or policy versions are involved, UM/UIM plans with matching limits are easier to judge than quotes built with different protection. Keep the bodily injury limits, property-damage options, deductibles, and policy term as consistent as possible.
Compare the same limit
A $50,000 limit and a $100,000 limit are not equivalent price comparisons.
Compare total premium
Look at the term cost or annualized difference, not only the monthly installment.
Compare what changed
Confirm whether the new price also changes deductibles, property-damage coverage, fees, or other policy terms.
What to Check After the Limit Change
NAIC’s sample declarations-page guidance shows coverage limits, deductibles, policy dates, premium, and optional coverage on the policy summary [3]. After a limit change, use the revised documents to verify that the requested amount actually appears.
- The correct UMBI and UIMBI limits.
- UMPD or other property-damage coverage, if selected.
- The applicable deductible.
- The new effective date.
- The revised premium or prorated charge/credit.
- Any required selection, rejection, or endorsement form.
- No unintended changes to other coverages.
FAQ: Changing Uninsured Motorist Coverage Limits
Can I raise my UM/UIM limits before renewal?
Often, insurers can make coverage changes during the policy term through an endorsement or similar policy change, but available limits, forms, and effective dates depend on the insurer and state.
Will higher UM/UIM limits always cost more?
Higher limits generally increase the insurer’s potential claim exposure and can increase premium. The actual difference varies by insurer, state, driver, and policy, so request the exact price for each limit option.
Can I lower my UM/UIM limits to save money?
If lower limits are permitted, they may reduce premium. Compare the dollar savings with the amount of protection removed and check whether your state requires a signed selection or rejection form.
When does a new UM/UIM limit take effect?
The insurer should provide an effective date for the endorsement or revised policy. Confirm that date in writing before relying on the new limit.
How do I know the change was completed?
Check the revised declarations page or endorsement for the new limit, effective date, premium adjustment, and any related deductible or coverage selection.
Final Thoughts
Changing UM/UIM limits is an active-policy decision, not just a coverage-selection exercise. The important details are the current limit, the new limit, the premium difference, the effective date, and the documents that confirm the change.
Before submitting the change, compare the price difference between UM/UIM limit levels and keep a copy of the revised declarations page or endorsement. That gives you a clear record of the protection that applies after the change takes effect.
Compare Auto Insurance Options
Enter your ZIP code to start an online quote flow and compare available auto insurance options in your area.
Final rates and available UM/UIM options depend on location, driver profile, vehicle, coverage selections, and insurer underwriting.
References
- National Association of Insurance Commissioners, Auto Insurance consumer information, including declarations-page coverage limits, policy term, and insured vehicle details. Source↩
- National Association of Insurance Commissioners, What You Need to Know About Adding an Endorsement or Rider to an Existing Insurance Policy, including policy modifications and premium changes. Source↩
- National Association of Insurance Commissioners, A Shopping Tool for Auto Insurance, including a sample declarations page with policy dates, coverage limits, deductibles, premium, and optional coverages. Source↩
- Texas Department of Insurance, What is uninsured motorist coverage, and do I really need it?, including the Texas example of additional UM/UIM coverage in $5,000 increments and written rejection. Source