Pet insurance is easy to understand in outline and harder in the details. The premium buys a promise to pay a share of a vet bill, after you have paid a fixed amount, up to a ceiling. How much that promise is worth on a given day depends on three numbers and the order in which they are applied. Owners often discover this on the day they make a claim, when the cheque is smaller than they expected. This guide runs four bills of different sizes through a typical set of terms, shows how the order of the excess and the percentage changes the answer, explains per-claim, per-condition and annual limits and gives a checklist for reading a policy. The terms in the examples are invented, and your policy governs. For the premium side, see how pet insurance works.
The terms used in the examples
- Excess: 100 per claim
- Reimbursement rate: 80%
- Annual limit: 3,000
- Order: excess is taken off first, then the rate is applied
payout = min((bill − excess) × rate, remaining limit) you pay = bill − payout
Four bills
| Bill | Bill − excess | × 80% | Capped at the limit | Insurer pays | You pay |
|---|---|---|---|---|---|
| 300 | 200 | 160 | 160 | 160 | 140 |
| 800 | 700 | 560 | 560 | 560 | 240 |
| 1,500 | 1,400 | 1,120 | 1,120 | 1,120 | 380 |
| 4,000 | 3,900 | 3,120 | 3,000 | 3,000 | 1,000 |
On the smallest bill the insurer pays 53%. On the 1,500 bill it pays 75%. On the 4,000 bill the limit bites: the policy would pay 3,120, but the cap is 3,000, so you pay 1,000, 25% of the bill. The percentage you recover rises with the bill until the limit cuts in.
The order matters
Some policies apply the percentage first and then take off the excess.
| Bill | Excess first: (bill − 100) × 80% | Percentage first: bill × 80% − 100 | Difference |
|---|---|---|---|
| 300 | 160 | 140 | 20 |
| 800 | 560 | 540 | 20 |
| 1,500 | 1,120 | 1,100 | 20 |
| 4,000 | 3,120 (cap 3,000) | 3,100 (cap 3,000) | 0 after the cap |
The difference is the excess times (1 − rate): 100 × 0.2 = 20. It is small here, and larger with a larger excess or a lower rate. The policy tells you which order applies; if it does not, ask.
How limits work
Policies differ in how they limit payouts. The usual types:
| Limit type | What it caps | Effect |
|---|---|---|
| Annual limit | Total paid in a policy year | Resets each year |
| Per-condition limit | Total paid for one condition (sometimes for life) | Can run out during a long illness |
| Per-claim limit | Each claim | Several claims can exceed it |
| Lifetime limit | Total over the policy’s life | May not reset |
A long-running condition under a per-condition limit is the case that catches people. If the limit is 2,000 and a condition costs 800 a year, the insurer’s share runs out after about four years (at 560 per year, the 2,000 limit is reached in just over 3.5 years). Read how your policy treats a condition across renewals.
The excess: per claim, per condition or per year
An excess per claim applies each time. A per-condition excess applies once to a condition and then not again for that condition. A yearly excess applies once a year.
| Scenario | Per-claim excess (100) | Per-year excess (100) |
|---|---|---|
| Three visits of 300 for one condition | 3 × 100 = 300 excess | 100 excess |
| Insurer pays at 80% | (900 − 300) × 0.8 = 480 | (900 − 100) × 0.8 = 640 |
| You pay | 420 | 260 |
The same three visits cost you 420 or 260 depending on the type of excess. This is a major reason to compare policies by their terms, not their premiums; see how to compare pet insurance quotes.
What is not covered
Excess and limits are not the only things that reduce a payout. Exclusions for pre-existing conditions, waiting periods and items not covered (routine care, for example) all reduce what is paid. See pet insurance waiting periods explained. A bill that includes an excluded item is paid only for the covered part.
Break-even
Add up the premiums and compare them with the payouts you expect. With a premium of 40 a month (480 a year), a policy needs the insurer to pay at least 480 in a year to break even. With the terms above, a single claim of about 700 pays 480 ((700 − 100) × 0.8). The Pet Insurance Break-Even Calculator does this for your numbers. A pet that makes no claims costs you the premium; the value of the policy is in protection against a large bill, not in a yearly return. The comparison with a savings plan is in the 12-month fund guide.
Checklist for reading a policy
- What is the excess, and is it per claim, per condition or per year?
- What is the reimbursement rate, and can it change with age?
- Is the excess taken off before or after the percentage?
- What is the limit: annual, per condition, per claim or lifetime?
- Which items are excluded?
- What are the waiting periods?
- How does the premium change at renewal?
- How and how fast are claims paid?
Write the answers in a table next to each quote.
A worked example
Omar’s dog needs surgery costing 2,600, including 200 for items his policy excludes. His policy: excess 150, 90% reimbursement, per-condition limit of 3,000, excess taken off first.
| Step | Working | Result |
|---|---|---|
| Covered part of the bill | 2,600 − 200 | 2,400 |
| Less excess | 2,400 − 150 | 2,250 |
| Reimbursement | 2,250 × 0.90 | 2,025 |
| Within the limit? | 2,025 < 3,000 | Yes |
| Insurer pays | 2,025 | |
| Omar pays | 2,600 − 2,025 | 575 |
Omar’s cost is 575, of which 200 is the excluded items, 150 the excess and 225 the 10% share. If he had a fund of 600, it covers his part exactly. The sum, done in advance, would have told him the size of the fund he needed.
Higher excess, lower premium: who wins?
A higher excess usually lowers the premium. Whether that pays depends on how often you claim. Suppose a policy costs 45 a month with a 50 excess, or 36 a month with a 250 excess, both at 80% reimbursement.
| Year | Excess 50 (premium 540) | Excess 250 (premium 432) |
|---|---|---|
| No claims | You pay 540 | You pay 432 |
| Two claims of 400 | Insurer pays 2 × 280 = 560; you pay 540 + 240 = 780 | Insurer pays 2 × 120 = 240; you pay 432 + 560 = 992 |
| One claim of 3,000 | Insurer pays 2,360; you pay 540 + 640 = 1,180 | Insurer pays 2,200; you pay 432 + 800 = 1,232 |
With no claims the higher excess saves 108. With two small claims it costs 212 more. With one large claim it costs 52 more. The higher excess wins only in a quiet year. If you have a fund to cover the excess and rarely claim, the lower premium may suit you; if you want to avoid paying on every visit, the lower excess does. The Pet Insurance Break-Even Calculator can compare the options with your own numbers.
Keep the paperwork
Keep invoices, treatment notes and your policy schedule. A claim for a long-running condition may need the history. Submit claims promptly, since policies have time limits, and note the date and reference of each.
Common mistakes
- Comparing premiums only.
- Not asking which order the excess applies.
- Forgetting excluded items.
- Missing that a per-condition limit runs out.
- Treating insurance as a return on the premium.
- Not keeping a fund for the excess.
- Not reading renewal terms.
Quick summary
- Payout = min((bill − excess) × rate, remaining limit); you pay the rest.
- With 100 excess, 80% and a 3,000 limit: 300 pays 160, 800 pays 560, 1,500 pays 1,120, 4,000 pays 3,000.
- The order of excess and percentage changes the result by excess × (1 − rate).
- Annual, per-condition, per-claim and lifetime limits behave differently.
- A per-claim excess can cost much more than a per-year one.
- Use the Pet Insurance Break-Even Calculator.
Frequently asked questions
How is a pet insurance claim paid?
Policies usually subtract an excess and pay a percentage of the rest, up to a limit. Your policy document gives the exact order.
What is the difference between excess and reimbursement?
The excess is a fixed amount you pay on a claim; the reimbursement rate is the share of the remainder the insurer pays.
Does the order matter?
Yes. Taking the excess off before applying the percentage gives a different result from applying the percentage first.
What is an annual limit?
The most the insurer pays in a policy year. Some policies have limits per condition or per claim instead.
Does the excess apply to every claim?
It depends on the policy: per claim, per condition or per year.
Where do I find the details?
In your policy schedule and the key facts or product disclosure document.
Sources
- Your policy schedule and key facts / product disclosure statement (the legal source for excess, reimbursement, limits and the order of calculation)
- NAIC Pet Insurance Model Act (2022), disclosure of reimbursement, deductible and limits
- Pure arithmetic: payout = min((bill − excess) × rate, remaining limit)
Related calculators
- Pet Insurance Break-Even CalculatorCompare what you pay in premiums with what a claim would repay, from your own policy numbers.
- Pet Emergency Fund CalculatorPlan how much to save each month, or how many months it takes, to build a vet-bill safety fund.
- Monthly Pet Budget CalculatorAdd up your monthly pet costs to see the monthly and yearly total.
Keep reading
- How Pet Insurance Works: Premium, Excess, CoverHow pet insurance works: premium, excess or deductible, reimbursement rate, limits, waiting periods and exclusions explained with a worked claim and a checklist.
- How to Compare Pet Insurance QuotesHow to compare pet insurance quotes on equal terms: premium, excess, reimbursement, limit and exclusions, with a break-even table and a worked three-quote example.
- Pet Insurance Waiting Periods ExplainedWhat pet insurance waiting periods are, typical types (accident, illness, orthopaedic), how to count the dates from your start day and what to ask before you buy.
- Pet Insurance for Older PetsHow pet insurance changes for older dogs and cats: age limits, premium growth, pre-existing exclusions, a nine-year premium example and when saving may make sense.