Pet insurance pays your vet bills (or most of them) when your cat or dog gets sick or injured. You pay a monthly premium, and in return the insurer covers treatment costs up to a set limit. Simple in theory. But the details matter a lot, and picking the wrong type of policy can leave you paying thousands out of pocket when your pet needs expensive treatment.
Around 5 million UK pets are insured, according to ABI data from 2025. That's roughly 25% of dogs and 12% of cats. The other 75% of dog owners and 88% of cat owners are self-insuring, whether they realise it or not. Given that a cruciate ligament repair costs £2,500-4,000 and cancer treatment can run to £8,000+, that's a significant gamble.
What pet insurance covers
A standard pet insurance policy covers vet fees for illness and injury. This includes consultations, diagnostic tests (blood work, X-rays, MRI scans), surgery, medication, and follow-up appointments. Most policies also cover third-party liability for dogs (if your dog injures someone or damages property), death from illness or accident, and advertising and reward costs if your pet goes missing.
Some policies include extras like dental treatment following an accident, overseas travel cover (for pets travelling under the Pet Travel Scheme), and complementary treatments like hydrotherapy or acupuncture when recommended by a vet.
The vet fee limit is the number that matters most. Cheap policies might cap you at £1,000 per year. Mid-range policies offer £4,000-7,000. Premium lifetime policies go up to £12,000 or even £15,000 per year. For context, a referral to a specialist veterinary hospital for cancer treatment typically costs £3,000-8,000. A single MRI scan is £1,500-2,500. So a £1,000 limit won't cover much if something serious happens.
The 4 types of pet insurance
Accident only
This covers injuries from accidents: broken bones, lacerations, road traffic incidents, swallowed objects. It doesn't cover illness at all. No cancer, no diabetes, no skin conditions, no digestive issues. It costs £5-10 per month and is really only a safety net for emergency situations. If your dog gets hit by a car, you're covered. If your dog develops arthritis, you're not.
Time-limited (also called annual or per-condition)
This gives you 12 months of cover per condition, up to a fixed monetary limit. If your cat develops kidney disease in March 2026, you can claim for that condition until March 2027, up to the policy limit (typically £1,000-4,000 per condition). After 12 months, that condition is permanently excluded from your policy. Any new conditions that arise get their own 12-month clock.
Time-limited policies cost roughly £12-22 per month for a medium-risk breed. They work well for one-off illnesses and injuries. They're poor for chronic conditions that need ongoing treatment, because you'll be paying for those yourself after the first year.
Maximum benefit (per-condition limit, no time restriction)
This gives you a set amount per condition with no time limit. If the limit is £5,000 per condition, you can claim against that £5,000 whether it takes 6 months or 6 years. Once you hit the limit, that condition is excluded. New conditions get their own separate limit.
Maximum benefit policies cost £15-28 per month and offer a middle ground between time-limited and lifetime cover. They're better for chronic conditions than time-limited policies because there's no 12-month cutoff. But once your limit is exhausted, you're on your own.
Lifetime
The most comprehensive option. You get an annual benefit limit (say £7,000 per year) that resets every time you renew. Chronic conditions remain covered year after year, provided you keep renewing the policy. A dog with diabetes costing £200 per month in insulin and monitoring would be covered indefinitely under a lifetime policy.
Lifetime cover costs £20-50 per month depending on breed and age. It's roughly 40% more expensive than time-limited cover. But it's the only type that handles long-term conditions without leaving you exposed. If you can afford it, this is what most vets recommend.
What's excluded
Every pet insurance policy excludes certain things. These are universal across all UK insurers:
- Pre-existing conditions: anything your pet was diagnosed with, showed symptoms of, or received treatment for before the policy started. This is the biggest exclusion and catches out more pet owners than anything else.
- Routine and preventive care: vaccinations, flea and worm treatments, neutering, microchipping, nail clipping. These are predictable costs, not insurable risks.
- Dental treatment (unless caused by accident): tooth extractions, dental disease, and periodontal treatment are excluded by most policies. A few insurers offer dental as an add-on for an extra £3-5 per month.
- Pregnancy and breeding costs: if you're intentionally breeding your pet, complications from that aren't covered.
- Behavioural conditions: most insurers exclude training, behavioural therapy, and conditions deemed behavioural rather than medical.
- Cosmetic procedures: anything that isn't medically necessary.
There's also a waiting period at the start of every new policy, typically 14 days for illness and 48 hours for accidents. If your pet gets ill during the waiting period, it won't be covered and may be classed as pre-existing going forward.
How claims work
The claims process has got simpler over the past few years, though it still varies between insurers. Here's the typical flow:
You take your pet to the vet. The vet treats your pet. You pay the bill (most UK insurers require you to pay upfront and claim back, though a few now pay the vet directly). You fill in a claim form, either online or on paper. Your vet fills in their section confirming the diagnosis and treatment. You submit the form with the invoice.
Most insurers process straightforward claims within 5-10 working days. Complex claims involving specialist referrals or large amounts might take 2-4 weeks while the insurer reviews the clinical notes.
The insurer deducts your excess (the fixed amount you agreed to pay per claim or per condition) and any co-pay percentage, then pays the remainder to your bank account. Some policies have a per-claim excess, others have a per-condition excess (meaning you only pay it once per condition per year, regardless of how many vet visits that condition requires).
Typical excesses
Fixed excess amounts range from £50 to £250 across UK pet insurers. The industry average is around £100-120 for a dog and £80-100 for a cat. You can choose a higher voluntary excess to reduce your monthly premium. Adding £100 to your excess typically saves 12-15% on your premium.
Co-pay is separate from fixed excess. It's a percentage of the remaining claim that you pay. Most insurers introduce a 20% co-pay once your pet turns 8 years old. Some policies have co-pay from the start (in exchange for a lower premium). A few premium policies have no co-pay at any age.
Here's a worked example. Your 9-year-old dog needs surgery costing £3,000. Your policy has a £150 fixed excess plus 20% co-pay (applied because of age). The insurer calculates: £3,000 minus £150 excess = £2,850. Then 20% co-pay on £2,850 = £570. Your total out-of-pocket cost: £150 + £570 = £720. The insurer pays: £2,280.
For a younger pet without co-pay and a £100 excess on the same £3,000 bill: you'd pay £100, the insurer pays £2,900. The difference is substantial, and it's worth understanding before your pet reaches age 8.
Want to estimate what insurance might cost for your specific pet? Try our pet insurance cost estimator.