In pet insurance, the excess is the amount you pay out of your own pocket before your insurer covers the rest of a claim. It works the same way a deductible does in other types of insurance: when your pet needs treatment, you’re responsible for the excess portion of the bill, and the insurance company pays what remains (up to your policy limits). The term “excess” is more common in the UK and Australia, while US policies typically call it a “deductible,” but they mean the same thing.
How the Excess Reduces Your Payout
When you file a claim, your insurer subtracts the excess from the eligible vet bill before calculating what it owes you. If your vet bill is $1,000 and your excess is $200, the insurer’s share starts at $800. If your policy reimburses at 80%, you’d receive $640 back, and you’d be responsible for the remaining $360 ($200 excess plus your 20% share of the rest).
Most insurers let you choose your excess amount when you buy or renew a policy. Common options range from $50 to $1,000. Picking a higher excess lowers your monthly premium because you’re agreeing to shoulder more of each bill yourself. A lower excess means higher premiums but less out-of-pocket cost when your pet actually needs care.
Fixed Excess vs. Percentage Excess
A fixed excess is a flat dollar amount, say $100 or $250, that stays the same regardless of how large the vet bill is. Whether your claim is $500 or $5,000, you pay the same set amount first.
A percentage excess (sometimes called a co-payment or copay) works differently. Instead of a flat fee, you pay a percentage of the bill after the fixed excess has already been subtracted. For example, if your vet bill is $1,000, your fixed excess is $100, and your copay is 20%, the math looks like this: you pay the $100 excess first, leaving $900. Then 20% of that $900 is $180, which is also your responsibility. Your insurer covers the remaining $720, and your total out-of-pocket cost is $280.
Some policies include only a fixed excess. Others layer a percentage copay on top of it, especially for older pets. Many insurers introduce a mandatory copay once a pet reaches a certain age (often around 6 to 8 years for dogs), reflecting the higher likelihood of claims as pets get older. Some providers also cap reimbursement rates for senior pets or high-risk breeds at 70%, which effectively acts as a 30% copay.
Per-Condition vs. Annual Excess
How often you pay the excess depends on whether your policy uses a per-condition (also called per-incident) structure or an annual structure.
With an annual excess, you pay it once per policy year. After your first claim meets or exceeds the excess, every additional claim that year is covered without another excess deduction. If your annual excess is $250 and your first vet visit costs $400, you pay $250 and the insurer handles the remaining $150. If your pet needs treatment again two months later, the insurer starts paying from the first dollar.
With a per-condition excess, you pay the excess each time your pet is treated for a new condition. If your dog has surgery for a torn ligament and later gets an ear infection, you pay the excess twice because those are separate conditions. However, ongoing treatment for the same condition typically only triggers the excess once (or once per policy year, depending on the insurer). Per-condition excesses can add up quickly if your pet develops multiple health issues in the same year.
Annual excesses are generally more predictable and friendlier to pet owners whose animals need frequent care. Per-condition excesses tend to come with lower premiums but can cost more overall if your pet has an unlucky year.
Choosing the Right Excess Amount
The excess you pick should reflect how much you can comfortably pay out of pocket when an unexpected vet bill hits. A $1,000 excess will give you the cheapest monthly premium, but you need to actually have $1,000 available when your pet gets sick or injured. If that amount would strain your budget, a lower excess of $100 to $250 is safer even though it raises your premium.
Consider how often your pet is likely to need veterinary care. Younger, healthy pets may do fine with a higher excess because claims are less frequent, so you save on premiums without paying the excess very often. Older pets or breeds prone to certain conditions may visit the vet more frequently, making a lower excess more cost-effective over time.
It’s also worth checking whether your policy’s excess is annual or per-condition before committing. Two policies with identical excess amounts can cost you very different totals depending on how that excess is applied. Read the policy schedule carefully, because the excess structure affects your real cost just as much as the dollar amount itself.
When You Don’t Pay the Excess
You only pay the excess when you make a claim. Routine vet visits, vaccinations, and checkups don’t involve the excess unless your policy specifically covers preventive care and you’re filing a claim for it. Most standard pet insurance policies cover accidents and illnesses rather than routine care, so the excess only comes into play when something unexpected happens.
If a vet bill is smaller than your excess, there’s no point filing a claim at all. The insurer wouldn’t owe you anything, and some insurers track the number of claims you file, which could affect future pricing. For small bills that fall below your excess, you’re better off paying out of pocket and saving your claims for the larger expenses your insurance is designed to handle.