Arizona Supreme Court settles key UM/UIM stacking dispute with important implications for insurers and policyholders
By: Nathan Andrews On July 6, 2026, the Arizona Supreme Court held that multiple individuals who jointly purchase multiple insurance policies from the same insurer constitute “one insured” for the purposes of the anti-stacking provisions of A.R.S. § 20-259.01(H). Thus, an insurance company may prohibit a claimant from stacking multiple policies jointly purchased by multiple individuals...


