Seven things to compare before you buy — and the fine print that quietly decides whether a plan is good.
Pet insurance plans look almost identical on the quote page and behave very differently on the day you file a claim. The premium is the number everyone compares, but what actually decides whether a plan protects you is the coverage type, the three plan "dials," and a handful of exclusions buried in the sample policy. Here's what to compare, in order of how much it matters — with the math worked out in dollars, not adjectives.
Most owners want accident-and-illness — the standard plan that covers both injuries and disease. Industry averages in 2026 run about $44–56/month for dogs and $25–32/month for cats. Accident-only is far cheaper (roughly $10–20/month) but won't cover cancer, infections, allergies, or chronic disease — which is where many of the largest bills come from. A wellness add-on for routine care is a separate, optional layer, not a substitute for either. If you're torn between the two core types, read the accident-only vs. accident-and-illness comparison before going further — everything else on this list assumes you've made that call.
Here's why the dials matter more than the sticker price. Take a torn ACL — a common dog injury that runs $3,500–5,000 to repair. On a $4,000 bill with a $250 deductible: at 80% reimbursement you get (4,000 − 250) × 0.8 = $3,000 back and pay $1,000; at 90% you get $3,375 back and pay $625; at 70% you get $2,625 back and pay $1,375. Same plan family, same bill — a $750 swing in what lands on your card, decided by one dropdown at signup.
A $5,000 limit feels generous until you price a bad year. Dog cancer treatment can run $5,000–15,000. Compare two generic plans on a $12,000 cancer year, both with a $250 deductible:
| Plan A | Plan B | |
|---|---|---|
| Reimbursement | 80% | 90% |
| Annual limit | $5,000 | Unlimited |
| Plan pays on $12,000 | $5,000 (capped) | $10,575 |
| You pay | $7,000 | $1,425 |
The math: Plan B pays (12,000 − 250) × 0.9 = $10,575. Plan A would owe (12,000 − 250) × 0.8 = $9,400, but the $5,000 cap cuts it off — leaving you with $7,000 of the bill. Plan A costs less per month, and it works fine on ordinary claims. It fails on exactly the bill you bought insurance for. If the higher-limit premium stings, raising the deductible is usually a safer way to save than lowering the limit.
Check how the plan handles pre-existing conditions (no plan covers them, but some distinguish curable from incurable), bilateral conditions (if one knee tore before enrollment, is the other knee excluded too?), hereditary and congenital conditions (essential for purebreds — check your breed's risk profile on the breed pages), and age caps on new enrollment. This fine print separates good plans from bad ones far more than a few dollars of premium. The full taxonomy is in what pet insurance doesn't cover.
Accidents are typically covered after a short wait (2–14 days), illnesses after about 14 days, and orthopedic conditions sometimes after up to 6 months. The trap: anything that shows symptoms during a waiting period is treated as pre-existing afterward. If your dog starts limping on day 10 of a 6-month orthopedic wait, that knee may never be covered. Details and a day-by-day timeline are in the waiting periods guide.
Three smaller items that add up. Exam fees: some plans reimburse the vet's exam/consult fee on a covered visit; others only cover treatment. It's $50–100-ish per visit territory in practice, and a chronic condition means many visits. Vet freedom: good plans let you use any licensed vet — no networks. Claims: check how they're filed (app photo vs. email forms), typical payout speed, and whether the insurer offers direct-to-vet payment so you don't have to float a large bill. The mechanics are covered in how to file a claim.
The cheapest quote is rarely the best plan. Compare the total picture: a low premium with a low limit and thin exclusion handling can leave you exposed exactly when it matters. Price the plan against your real risk — check typical procedure costs for the things your pet's breed and lifestyle make likely, then test each finalist plan on those bills with the reimbursement calculator.
Try next: See your cost on any bill · Is it worth it?
Start with coverage type (accident-and-illness vs. accident-only), then the three dials — deductible, reimbursement rate, and annual limit — then the exclusions: pre-existing, bilateral, hereditary, and age caps. Confirm the waiting periods, whether exam fees are reimbursed, and that you can use any licensed vet.
Choose the highest deductible you could comfortably pay on a sudden bill (it lowers your premium) and a reimbursement rate — 70/80/90% — that leaves a manageable share. On a $4,000 bill with a $250 deductible, 90% returns $3,375 while 70% returns $2,625, a $750 difference. Test realistic bills with a reimbursement calculator before deciding.
It handles most single incidents, but a serious diagnosis can blow past it — dog cancer treatment can run $5,000–15,000, and a capped plan stops paying at the limit no matter what the math says. If you want catastrophic protection, favor $10,000 or unlimited and save money on the deductible instead.
Most plans do — there are no networks, and you can visit any licensed veterinarian, specialist, or emergency hospital. You typically pay the vet and file a claim for reimbursement, though some insurers can pay the vet directly.
Benefit schedules that cap payouts per condition instead of paying a percentage of your actual bill, vague or harsh bilateral and hereditary exclusions, per-incident deductibles disguised in comparisons against annual ones, and a sample policy that's hard to get before purchase.
No — the cheapest quote usually gets there by lowering the annual limit, the reimbursement rate, or the coverage itself. A plan that saves a few dollars a month but caps at $5,000 can leave you paying $7,000 of a $12,000 cancer year. Compare total protection on a realistic bad-year bill, not just premiums.