10 Common Insurance Mistakes Australians make (And How to Avoid Them)

The most common insurance mistakes Australians make include underinsuring their home, skipping the product disclosure statement, picking the cheapest policy without comparing cover, forgetting to update details after life changes, and not disclosing risk factors. Each mistake can lead to a denied claim or a painful gap in cover.

Insurance feels like one of those things you set up once and forget about. You pay the premium, file the paperwork, and move on with your life. The trouble starts the day you actually need to make a claim and discover your policy doesn’t cover what you thought it did.

Every year, thousands of Australians find out the hard way that their insurance had a gap, an exclusion, or an outdated detail that cost them thousands of dollars. Most of these problems are avoidable. You just need to know where people usually go wrong.

This guide walks through ten of the most common insurance mistakes Australians make across home, car, and travel cover. None of them require an insurance degree to fix. They just need a bit of attention before something goes wrong, not after.

1. Skipping the product disclosure statement

Nobody enjoys reading a product disclosure statement, or PDS. It’s long, dense, and written in language that feels designed to put you to sleep. But this document tells you exactly what your policy covers, what it excludes, and what conditions apply to a claim.

A recent industry survey found that most travellers who bought travel insurance were unaware of at least one exclusion in their policy. That’s a huge number of people walking around with cover they don’t fully understand. Skimming the PDS before you buy, even just the key facts sheet, saves you from nasty surprises later.

Set aside fifteen minutes before you sign up for any policy. Look specifically at the exclusions section and the claims process. That short investment of time can save you a rejected claim down the track.

2. Underinsuring your home

This is the big one, and it’s shockingly common. Recent data from Australia’s prudential regulator found that 83 percent of Australian homes are underinsured, with the average gap between the insured amount and the true rebuild cost sitting at 34 percent. On a $900,000 home, that works out to a shortfall of roughly $306,000 if the house is destroyed.

Building costs have climbed more than 30 percent since 2022. If you set your sum insured a few years ago and never touched it again, there’s a good chance your cover hasn’t kept pace. Many homeowners also confuse market value with rebuild cost, but these two figures rarely match.

Check your sum insured every year at renewal, and definitely after any renovation. Most insurers offer a free online calculator to help you estimate a realistic rebuild cost. If you’re still unsure, a professional building valuation usually costs a few hundred dollars and can save you a six-figure shortfall.

3. Choosing the cheapest policy without comparing cover

Price comparison sites make it tempting to just click the lowest number and move on. But a cheap premium often means a smaller payout, a higher excess, or missing benefits that other policies include as standard.

Take car insurance as an example. One popular budget policy only covers $500 for emergency accommodation, and only if you’re stranded more than 200 kilometres from home. Compare that to the market standard of $1,000 and just 100 kilometres, and the cheaper policy suddenly looks a lot less generous.

Before you buy on price alone, line up two or three policies side by side. Look at the excess, the benefit limits, and any add-ons you might actually need, like hire car cover or rental excess protection. The extra ten minutes of comparison is worth far more than the small saving on premium.

4. Forgetting to update your policy after life changes

Insurance policies are built around the details you gave the insurer when you signed up. Moved house? Bought a new car? Added a granny flat? If you don’t tell your insurer, your policy might not reflect your actual risk, and that can affect a claim.

Something as simple as changing where you park your car overnight can matter. Insurers use your address and parking location to calculate risk, and failing to update this information could lead to a claim being delayed or even a policy being cancelled.

Make it a habit to review your policy details whenever something in your life changes significantly. A quick phone call or online update takes a few minutes and keeps your cover accurate.

5. Not disclosing pre-existing conditions or risk factors

This mistake trips up travellers more than anyone else. Failing to declare a pre-existing medical condition, like asthma, high blood pressure, or diabetes, is one of the leading reasons travel insurance claims get denied. Insurers can add these conditions to your cover, sometimes for an extra cost, but only if you tell them upfront.

The same logic applies to home and car insurance. If you’ve had previous claims, made changes to your vehicle, or run a business from home, your insurer needs to know. Leaving out these details doesn’t reduce your premium in any meaningful way. It just increases the chance your claim gets rejected when you need it most.

Be upfront about anything that could be considered relevant, even if you’re not sure it matters. A short conversation with your insurer before you buy is far better than a dispute after a claim.

6. Ignoring your excess amount

The excess is the amount you pay out of pocket before your insurer covers the rest. Many people barely glance at this number when they take out a policy, then get a shock when a claim comes in.

Rental car excess is a classic example. Standard rental agreements in Australia can carry an excess as high as $8,000 if the car is damaged or stolen. Some travel insurance policies cover this excess, but plenty don’t, or only cover part of it. Checking this single detail before you rent a car overseas can save you thousands.

When you compare policies, always check the excess alongside the premium. A policy with a low premium but a high excess might cost you more overall if you ever need to claim.

7. Assuming travel insurance covers everything

Travel insurance feels like a blanket safety net, but it has plenty of specific conditions attached. Alcohol-related incidents, unattended belongings, and adventure activities like bungee jumping or skiing off-piste are common areas where claims get knocked back.

One travel insurer reported paying an average of $8,101 for moped-related claims, with one claim reaching almost $84,000. Riding a scooter without the right licence or helmet, though, can void that cover entirely. Activities like white water rafting or trekking usually need a licensed operator and adherence to safety rules before a claim gets approved.

Read the activities section of your travel PDS carefully if your trip involves anything more adventurous than sightseeing. If an activity isn’t listed, call your insurer and ask directly rather than assuming you’re covered.

8. Letting policies auto-renew without checking

Auto-renewal is convenient, but it also means your policy can quietly become outdated or overpriced without you noticing. Insurers don’t always flag it when your circumstances have changed, and your premium can creep up year after year with no explanation.

This is especially relevant for home insurance right now. Premiums have risen sharply over the past five years, partly due to construction costs and partly due to more frequent extreme weather. If you haven’t compared your renewal quote against the wider market in a while, you could be paying well above the going rate.

Set a reminder a few weeks before each renewal date. Use that time to check your sum insured, compare a couple of alternative quotes, and confirm the cover still matches your situation.

9. Not insuring high-value items separately

Standard home and travel policies usually cap how much they’ll pay for individual items like jewellery, cameras, or musical instruments. If you own anything expensive, a standard policy might only cover a fraction of its value.

Photographers and musicians run into this constantly while travelling. Standard travel policies often have low limits on equipment, which means an expensive camera or instrument could be significantly underinsured if it’s lost, stolen, or damaged.

If you own anything worth more than a few thousand dollars, check the single-item limit on your policy. Adding specified cover for these items usually costs a small amount extra and closes a gap that could otherwise cost you dearly.

10. Delaying or mishandling a claim

How you handle a claim matters almost as much as having the right policy in the first place. Waiting too long to report an incident, providing incomplete information, or forgetting to gather evidence can all delay or reduce your payout.

Lodging a claim as soon as possible, with clear documentation like photos, receipts, and police reports where relevant, gives your claim the best chance of moving smoothly. Insurers also expect honesty about the circumstances of an incident. Small inconsistencies in your story can raise red flags and slow everything down.

If something happens, act quickly. Take photos on the spot, keep any receipts, and contact your insurer as soon as you reasonably can. A well-documented claim almost always moves faster than one filed weeks later with gaps in the story.

Final thought

Most insurance mistakes Australians make come down to the same root cause: not paying attention until it’s too late. Reading the PDS, updating your sum insured, and being upfront about risk factors all take a small amount of effort compared to the cost of a denied or reduced claim.

Set a yearly reminder to review every policy you hold. Check the numbers still make sense, confirm your details are current, and ask questions about anything you don’t understand. That one habit puts you well ahead of most Australians and gives you real peace of mind when you actually need to make a claim.