How Pet Insurance Works: Policy Types, Excess, Co-Insurance and Waiting Periods
What a pet insurance policy will and won't pay for: preexisting conditions, waiting periods, time limits and lifetime cover. No insurance links, ever.
Written by thecanineledger
This page carries no advertising, and nothing on it is for sale.
In the UK, the Financial Ombudsman Service (FOS) settles disputes between owners and pet insurers. It lists the reasons an insurer may give for turning down a claim. The first on its list is that the insurer says “your pet was already suffering from a condition before you took out the policy” (FOS, Pet insurance).
While the price is what most people compare, the exclusions decide whether a policy pays when your dog is ill. This page explains the terms that decide it, using the law in the US and the ombudsman’s approach in the UK.
This site carries no insurance links or insurance adverts, and is paid nothing by insurers or comparison sites. We don’t recommend any policy. We explain how they work.
1. Types of policy
The FOS describes the main UK types:
- Annual policies, “providing cover for a condition for a 12-month period and are renewed annually”.
- Lifetime policies, “providing cover for the lifetime of the pet, as long as the policy is renewed each year.”
- Trial cover, often free for about four weeks when you get a new pet, from a breeder or vet.
The difference between annual and lifetime cover matters most for long-term illness. If your dog develops a condition that needs treatment for years, an annual or time-limited policy may stop paying for it.
In the US, a model law written by the National Association of Insurance Commissioners (NAIC) defines pet insurance as “a property insurance policy that provides coverage for accidents and illnesses of pets” (NAIC Pet Insurance Model Act, 2022). A model law is a template. It applies only in states that have adopted it.
Our note: We haven’t researched which US states follow the model law, or the rules in Canada.
2. Preexisting conditions
This is the first exclusion on the ombudsman’s list. Under the NAIC model, a preexisting condition is one where, before the policy started or during a waiting period:
“(1) A veterinarian provided medical advice;
(2) The pet received previous treatment; or
(3) Based on information from verifiable sources, the pet had signs or symptoms directly related to the condition for which a claim is being made.”
Two protections follow in the model. “The pet insurer has the burden of proving that the preexisting condition exclusion applies”. And a condition the policy has covered “cannot be considered a preexisting condition on any renewal of the policy.”
In the UK, the FOS says that when an insurer turns down a claim this way, it will look at “whether the condition you’re claiming for is the same or related to the condition the animal suffered from before”, and at “what you knew or should’ve known when you took the policy out.”
What this means for you: anything your vet has noted in your dog’s records, even a single mention of a limp or an itchy ear, may be excluded later. Buying cover while your dog is young and healthy avoids most of these exclusions.
Our note: “Buying cover while your dog is young and healthy avoids most of these exclusions” is our reasoning from the definition, not a quoted finding. We take no position on whether insurance is worth buying.
3. Waiting periods
Most policies don’t cover illness straight away. The NAIC model defines a waiting period as “the period of time specified in a pet insurance policy that is required to transpire before some or all of the coverage in the policy can begin.”
The model limits them. Insurers may impose waiting periods that “do not exceed 30 days for illnesses or orthopedic conditions not resulting from an accident.” And: “Waiting periods for accidents are prohibited.” The policy must also allow the waiting period to be waived after a vet examination.
In the UK, the FOS notes that an insurer may decline a claim because “the condition appeared within the first 14 days” of the policy.
4. Excess, co-insurance and limits
These four terms decide how much of each bill you pay:
- Excess (called a deductible in the US): the amount you pay before the policy pays anything.
- Co-insurance or co-payment: a share of each bill you keep paying, often a percentage.
- Annual limit: the most the policy will pay in a year.
- Per-condition or lifetime limit: the most it will pay for one condition, or ever.
The NAIC model requires insurers to disclose any provision that limits cover “through a waiting or affiliation period, a deductible, coinsurance, or an annual or lifetime policy limit.” It also requires them to disclose whether they reduce cover or raise premiums based on claims, the pet’s age, or a move.
Our note: These definitions are our plain-language explanations, not quotes. Terms such as UK “co-payment” and US “coinsurance” may not work the same way, so check your policy wording.
5. Conditions some policies exclude
The NAIC model defines three more terms that policies often use to exclude cover:
- Chronic condition: “a condition that can be treated or managed, but not cured.”
- Hereditary disorder: “an abnormality that is genetically transmitted from parent to offspring and may cause illness or disease.”
- Congenital anomaly or disorder: “a condition that is present from birth, whether inherited or caused by the environment”.
The model doesn’t require insurers to exclude these. It requires that, if a policy uses the words, it uses these definitions. If your dog is a breed prone to an inherited condition, check whether the policy covers it. → Choosing a Breed or a Mix: The Health Data Breeders Don’t Lead With
6. Time limits
Some UK policies pay for a condition for a fixed time only, often 12 months. The FOS says it would “expect a time limit to start from when a vet recommends investigation or treatment, even if you decide not to go ahead with the vet’s recommendation at that time.”
7. Wellness plans are not insurance
Many clinics and insurers sell plans that pay for vaccinations, flea treatment and check-ups. The NAIC model requires sellers to disclose “That wellness programs are not insurance.” It also bars insurers from marketing a wellness programme as pet insurance.
In the UK, practices selling pet care plans will soon have to show what each plan includes and the standalone price of each service. → Why Vet Bills Went Up: What the UK Competition Inquiry Found
8. Changing insurer, and changing your mind
Switching can cost you cover. The FOS warns that “it’s unlikely a lifetime policy with a new insurer will cover any conditions your pet already has.” A condition your old insurer covered may become preexisting for the new one.
You may be able to cancel early. Under the NAIC model, owners who haven’t made a claim can return a new policy “within fifteen (15) days of its receipt” for a full refund.
9. Before you buy
- What counts as preexisting? Ask for the definition in writing.
- Is cover annual, time-limited or lifetime?
- What are the waiting periods, and can a vet examination waive them?
- What is the excess and co-payment, and do they rise with age?
- What are the annual and per-condition limits?
- Are hereditary or breed-related conditions covered?
- Does the premium rise after a claim?
Our note: This checklist is ours. We didn’t find a regulator’s or ombudsman’s version that we could read.
10. What we could not verify
| Commonly said | What we found |
|---|---|
| “Pet insurance is always worth it” | No independent cost-benefit study found. It depends on the policy, the dog and your savings. |
| “Insurers can exclude anything they like as preexisting” | Not under the NAIC model, which defines the term and puts the burden of proof on the insurer. UK practice is set by policy wording and the FOS. |
| “Wellness plans are a kind of insurance” | No. The NAIC model requires sellers to say they are not. |
| The rules in Canada | Not researched. |
Sources
- Financial Ombudsman Service: Pet insurance (UK ombudsman; read)
- National Association of Insurance Commissioners: Pet Insurance Model Act (adopted Summer 2022; model law, binding only where a state adopts it; read in full)
Always confirm with your vet before acting on anything on this page.