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Pet Insurance: the Answer Flips on One Assumption

Published 9/4/2026 · 6 min read · Everyday calculators

Camille Laurent

Camille LaurentFinance writer at OneKitly

Tax · Personal finance

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In short

The comparison is a year-by-year model with no hidden constants: claims compound with vet-fee inflation and with an age factor, routine care compounds with inflation only, premiums compound with their own growth rate, and the insurer pays the lesser of the annual cap and the reimbursement rate applied to claims above the deductible. Run a French dog at EUR 27.61 a month with 80 per cent reimbursement and a EUR 2,000 cap over fourteen years and the result depends entirely on the claims you assume. Flat claims of EUR 150 a year: insurance costs EUR 4,387 more and never breaks even. Claims of EUR 400 growing six per cent a year with age: it saves EUR 3,936 and crosses over in year three. A chronic condition at EUR 1,000 a year: it saves EUR 15,124 and crosses in year one.

Over fourteen years the same French dog costs 4,387 more insured if it stays healthy and 15,124 less if it develops a chronic condition. Every other input is arithmetic; the claim curve is the whole decision.

The premium is the certainty and the claim is the bet

Fourteen years of premium at EUR 27.61 a month, growing six per cent a year, comes to EUR 6,963 before a single claim is made. That is the number an insured owner pays whatever happens, and the only way it is recovered is through claims large enough that the reimbursement exceeds it. Against flat claims of EUR 150 a year the insurer pays back EUR 120 a year and the premium is EUR 331 in the first year alone — the arithmetic never closes.

That is not an argument against insurance; it is the shape of insurance. The product exists to convert an unpredictable large loss into a predictable small one, and a household that would struggle with a EUR 3,000 emergency is buying that conversion rather than an expected saving. The model prices the conversion honestly — it shows you what the certainty costs — and leaves the question of whether you want it where it belongs.

The annual cap only matters in the year you need it

Run the average-claim scenario against four different ceilings and three of them give exactly the same total: EUR 13,980 with a EUR 2,000 cap, with a EUR 5,000 cap and with no cap at all. Claims in that scenario peak at EUR 1,888 in the final year and eighty per cent of that is EUR 1,510, so the EUR 2,000 ceiling is never reached and the higher ones are decoration. Only the Portuguese-style EUR 1,250 cap binds, and it costs EUR 351 more across fourteen years.

Change the scenario to a bad year and the ordering reverses completely. With claims of EUR 2,500 a year, the fourteen-year insured total is EUR 78,903 under a EUR 1,250 cap, EUR 68,403 under EUR 2,000, EUR 41,187 under EUR 5,000 and EUR 28,285 with no ceiling — a spread of EUR 50,618 across the same policy with only the ceiling changed. The cap is worth nothing until it is worth everything, which is exactly the property that makes it hard to shop for.

Premiums are not comparable across borders, and the tool refuses to convert them

A British dog under two costs GBP 9.27 a month and a French dog under three costs EUR 27.61, and the first number is not three times better value than the second. The British policy reimburses at 100 per cent with a GBP 5,000 ceiling; the French one at 80 per cent with a EUR 2,000 ceiling. A German policy reimburses at 100 per cent but carries a EUR 250 deductible, which on modest claims pushes the break-even from year one to year six and costs EUR 3,500 more over fourteen years. Three prices, three products.

The premium also steps with age, and the steps are large and abrupt. A British dog's monthly premium goes from GBP 10.84 to GBP 22.74 when it turns seven — it more than doubles at a single birthday. A German cat goes from EUR 7.00 to EUR 11.42 at the same age, a rise of sixty-three per cent, and a French dog from EUR 30.04 to EUR 37.09 at six. Any comparison run at the age you buy is a comparison of the cheapest year of the policy, and the model exists to look past it.

A French dog over fourteen years: the same policy, five claim assumptions
Claim assumptionInsuredUninsuredBreak-even year
Healthy, flat 150 a year11,8997,512Never
Healthy but ageing12,2779,401Never
Average claims, no age growth12,97212,878Never — a wash
Average claims growing with age13,98017,916Year 3
Chronic condition, 1,000 a year23,22838,352Year 1
Pet Insurance CalculatorCompare a lifetime of vet bills paid out of pocket against an insured one, year by year, with the deductible, reimbursement rate and annual cap applied.Try the tool

Frequently asked questions

Is pet insurance worth it?
It depends on a number nobody has, which is why the tool asks you to state it rather than pretending to know. Set the claim assumption low and it never pays; set it high and it pays in the first year. The question that can be answered is the other one: what does the certainty cost, and could you absorb the bad year without it? A household with EUR 5,000 of accessible savings and a healthy young animal is buying convenience; one without is buying a floor under a decision it does not want to make in a waiting room.
What is not covered?
Pre-existing conditions, almost universally, and that single exclusion is why the age at which you first insure matters more than the price. Routine care — vaccination, worming, dentistry, neutering — is usually outside the policy or inside a separate wellness add-on, which is why the model carries it as its own line and charges it to both columns. Waiting periods, breed exclusions and per-condition rather than per-year ceilings are the other three places a policy differs from its headline.
How old is too old to insure?
There is rarely a hard cut-off for renewing an existing policy and often one for starting a new one — commonly between seven and nine years for a dog. The economic answer is different from the administrative one: by the time an animal is old enough to make insurance obviously worthwhile, its premium band has stepped up and any condition it has already developed is excluded. That asymmetry is deliberate and it is the reason the decision is effectively made in the first year of the animal's life.

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General information, not financial or insurance advice. The premiums and policy parameters in the tool are per-market figures gathered on a stated date and they move at every renewal season — check them against a current quote before deciding anything. Amounts are held in each market's own currency and are never converted between them: a French annual ceiling and a British one are two independently set product parameters, not one number in two currencies.

Sources

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