A pet insurance annual limit is the maximum dollar amount your insurer will pay for covered veterinary expenses during your policy year, which resets every 12 months. For example, if you have a $10,000 annual limit and your cat needs $8,000 in cancer treatments this year, you'd pay the vet upfront and get reimbursed by your insurer, leaving you with $2,000 remaining coverage until your policy renews.
Pet insurers also use other types of annual limits that work differently: