How Dog Insurance Works: Deductibles, Limits and Cover Types

Dog insurance works like this: you pay a regular premium, and when your dog needs covered treatment, you pay the vet, then claim. The insurer subtracts your excess (called a deductible in the US and Canada), pays its percentage of what is left, and stops paying once you reach the policy’s limit. Everything else, including what counts as “covered”, lives in the policy wording.

The mechanics are similar everywhere. The vocabulary is not, which is why a US article and a UK article on the same topic can seem to describe different products.

The basic money flow of a claim

A typical claim, in order:

1. Your dog is treated and you pay the vet bill.
2. You send the insurer a claim form, the invoice and the vet’s notes.
3. The insurer checks the condition is covered, not pre-existing, and not within a waiting period.
4. It subtracts your excess or deductible.
5. It applies your reimbursement percentage or co-payment.
6. It pays you, up to whatever limit is left on the policy.

The NAIC, the body that coordinates US state insurance regulators, notes that some insurers pay the vet directly, while others reimburse you after you have paid in full. If a large bill would strain your cash flow even for a few weeks, ask about direct payment before you buy.

Excess and deductible: your first slice of each claim

The excess or deductible is the amount you pay before the insurer contributes anything. A higher one lowers your premium, but Which? advises only choosing an amount you could realistically afford when the bill arrives.

The detail that matters most is how often it applies:

• Annual deductible: you pay it once per policy year, however many conditions your dog has. Common in the US. Spot’s published disclosure for Delaware, for example, describes an annual deductible that applies to each policy period.
• Per-condition excess: you pay it once for each separate condition. CHOICE’s buying guide, last updated in 2021, says excesses in Australia are usually charged per condition, with a typical figure then of around A$100.
• Per-claim or per-incident excess: you pay it every time you claim, which can add up for a dog with recurring ear infections.

Two dogs on policies with the same headline excess can end up paying very different amounts over a year.

Reimbursement percentage and co-payment

After the excess, most policies only pay part of the bill.

• US and Canada: you pick a reimbursement percentage, often called coinsurance. If you choose 80%, the insurer pays 80% of the eligible bill after the deductible and you pay 20%.
• Australia: the same idea is usually described as a benefit percentage. CHOICE’s 2021 guide put typical co-payments at 20–35% of the vet bill, and its 2026 review flagged some policies that pay only 60% of eligible bills.
• UK and Ireland: many policies pay 100% after the excess for younger dogs, then add a co-payment later. Which? says co-payments for older animals can be as high as 25%, with dogs over about eight generally treated as older. Ireland’s CCPC says some policies add a co-payment once a pet is around five or six.

A worked example with invented, round numbers: a 2,000 bill, a 250 deductible and 80% reimbursement means the insurer pays 80% of 1,750, which is 1,400. You pay 600.

Limits: annual, per-condition and lifetime

The limit is the most a policy will pay, and the way it resets matters more than its size.

Which? describes three common ways UK lifetime policies set their limits: one annual amount for everything (its example is £5,000 a year), a limit per condition per year (£2,000 a year for one condition, for example), or a mix of both. CHOICE’s 2021 guide found annual limits in Australia ranging from A$3,000 to unlimited.

The NAIC adds that US policies may have lifetime or per-illness maximums and dollar caps on things like exam fees. Read the schedule of benefits, not just the headline number.

The main types of cover

Accident-only

The cheapest option. It covers injuries such as being hit by a car or cutting a paw, but not illness. Which? notes UK accident-only policies often pay a fixed sum per injury and may stop covering an injury after 12 months.

Accident and illness

The standard product in the US, Canada, Australia and New Zealand. It covers injuries plus illnesses such as infections, cancer and gastrointestinal problems, up to an annual limit that resets when you renew. CHOICE calls the Australian version “comprehensive” cover.

Time-limited (UK and Ireland)

Covers each condition up to a cap for a set period, typically 12 months from when you first claim. After that, the condition is excluded. Fine for a broken leg; poor for arthritis.

Maximum benefit or per-condition (UK)

Pays up to a fixed amount for each condition with no time limit. Once that amount is used up, the condition is no longer covered, even if you renew, according to Which?.

Lifetime (UK and Ireland)

Covers conditions for as long as you keep renewing, with limits that reset each year. Which? describes it as the most comprehensive type and only includes lifetime policies in its Best Buy list. The CCPC notes lifetime policies still exclude pre-existing conditions and problems in the first 14 days.

The name “lifetime” can confuse US readers. In the UK it means the limit renews annually for the dog’s life. In the US, a “lifetime limit” means the opposite: a cap on the total paid over the dog’s life.

Waiting periods (stand-down periods in New Zealand)

Most policies will not pay for problems that start in the first days or weeks after cover begins. Any condition that appears during this window is usually treated as pre-existing.

• UK and Ireland: illnesses starting in the first 10–14 days are usually not covered, according to Which?, and the CCPC says most policies won’t accept claims in the first 14 days.
• Australia: waiting periods vary by insurer. As one example, Pet Insurance Australia lists 2 days for accidental injury, 30 days for illness and 6 months for cruciate ligament conditions.
• New Zealand: Consumer NZ uses the local term “stand-down periods” for the same idea.
• US: rules vary by state. Washington state’s pet insurance law, effective 1 January 2024, caps waiting periods for illness and non-accidental orthopaedic conditions at 30 days, bans waiting periods for accidents, and stops insurers applying them to renewals. Washington is one of 17 states that the NAIC, as of summer 2026, lists as having adopted its Pet Insurance Model Act, which sets common rules on disclosures, waiting periods and pre-existing conditions. The others are California, Delaware, Florida, Hawaii, Louisiana, Maine, Maryland, Mississippi, Montana, Nebraska, New Hampshire, New Jersey (from 1 January 2027), Ohio, Pennsylvania, Rhode Island and Vermont. Elsewhere, ask your state insurance department.

Some insurers waive or shorten the waiting period if you switch directly from another policy or if your dog has a vet exam, so ask.

Common exclusions

These are the things owners most often discover only when a claim is declined. The NAIC and CCPC both list routine and preventive care among the usual exclusions, alongside:

• Pre-existing conditions (anything with signs, advice or treatment before cover started)
• Routine care: vaccinations, neutering, flea and worm treatment
• Dental work not caused by an accident, on many policies
• Behavioural treatment, on many policies
• Pregnancy and birth
• Elective procedures
• Illness that a vaccination would have prevented, if you skipped it
• Bilateral conditions: problems that affect both sides of the body, such as both knees or both hips. If one side was affected before cover started, the other side may be excluded too. CHOICE gives the example of a cruciate injury in one leg leading to exclusion of the other, and its 2026 review describes the same rule for knees.

Some policies add breed-specific exclusions or will not accept dogs above a certain age. The CCPC notes some Irish insurers will not take on pets older than six to eight, and some breeds only up to five.

Terminology by country

Canadian policies largely use the US vocabulary, and NAPHIA, the North American pet insurance industry association, reports on both markets.

Routine care add-ons and wellness plans

Many insurers sell an add-on that pays a fixed amount towards vaccines, check-ups and parasite control. Vet practices also sell their own monthly plans.

These are not insurance against big bills. Washington state law requires wellness programs to carry a bold disclosure saying they are not insurance, and bars insurers from making a wellness program a condition of buying a policy. CHOICE’s 2021 guide found Australian routine care add-ons saved roughly A$20–65 a year even if you claimed the full annual benefit, so do the arithmetic before adding one.

Questions to ask before you buy

The NAIC suggests asking insurers about the points below. They apply almost anywhere:

• Can I use any licensed vet, including specialists and emergency hospitals?
• Is the excess or deductible per year, per condition or per claim?
• What is the annual limit, and are there sub-limits for specific conditions?
• How long are the waiting periods, including for orthopaedic problems?
• How are pre-existing conditions defined, and can a cured condition be covered later?
• Do premiums or co-payments change with age?
• What happens at renewal if my dog has claimed?
• How quickly are claims paid, and can you pay the vet directly?

Get important answers in writing. CHOICE recommends doing this before buying or switching.

The bottom line

Every dog insurance policy comes down to the same parts: premium, excess or deductible, your percentage share, a limit, waiting periods and exclusions. The names change between the US, UK, Ireland, Australia, New Zealand and Canada, but the questions do not. Focus on how the limit resets and how pre-existing and bilateral conditions are handled, because those decide whether a policy is still paying in year six. Read the policy wording itself; the summary page is not the contract.