Stacking and Why It Is Worth Asking About
If premiums were paid on more than one vehicle or more than one policy in a household, the question of whether those limits can be combined is often worth more than every other issue in the claim put together.
What stacking means in practice
Combining the UM/UIM limits of multiple vehicles on one policy, or of multiple policies in the same household, so the available coverage is a multiple of a single limit rather than the limit itself. In a serious injury that difference can be the whole case.
Whether it is available turns on wording and state
Policies contain anti-stacking language, and states differ substantially in how far that language is given effect. New Mexico courts have been comparatively protective of policyholders here; other states enforce the limitation more readily. It is a genuine legal question, not a matter of asking nicely.
Nobody will raise it for you
An adjuster is not going to volunteer that more coverage may be available. Pull every policy in the household — not only the one covering the vehicle you were in — and have them reviewed together.
What you can do about it depends on your state
This describes the denial itself, which works much the same everywhere. Whether you can sue under a statute, what you can recover, and how long you have differ sharply — choose the state where your policy was issued.
Common questions
What is stacking?
Combining the UM/UIM limits of more than one vehicle or policy where premiums were paid for each. Where it is available it can multiply the coverage available to you.
How do I know if I can stack?
It depends on the policy language and your state. Gather every household policy and have them reviewed together — it is not something an adjuster will raise.
Is this what happened to you?
A free, confidential review can tell you whether the denial holds up — no cost, no obligation.
Other reasons claims get denied
General information, not legal advice. Insurance law differs by state and every policy is different.