Underinsurance in Australia: 2026 Policy Changes & How to Protect Yourself

Underinsurance happens when your insurance policy—whether for your home, contents, or business—does not provide enough cover to rebuild, repair, or replace what you’ve lost after an event like a fire, storm, or theft. This gap can leave you with significant out-of-pocket expenses at a time when you need support the most.

Many Australians find themselves underinsured because the cost of rebuilding or replacing assets has increased, but their policy hasn’t kept up. Factors like inflation, rising construction costs, and changes to property values can quickly outpace the sums insured on existing policies.

Several factors contribute to underinsurance:

• Rising Costs: Building materials, labour, and property values have increased in recent years, but many policies are not updated regularly to reflect these changes.
• Automatic Renewals: It’s common to let insurance policies roll over each year without reviewing the sums insured or considering changes in your circumstances.
• Complex Policies: Insurance documents can be difficult to understand, making it easy to overlook exclusions, sub-limits, or the true value of your assets.
• Natural Disasters: Australia’s exposure to floods, bushfires, and storms means many people discover gaps in their cover only after disaster strikes.

For example, after major floods in northern Australia in early 2026, many homeowners found their policies didn’t cover the full cost of rebuilding or excluded certain types of damage, resulting in unexpected expenses.

Recent years have seen several changes aimed at addressing underinsurance and making insurance more transparent and accessible. In 2026, some of the key developments include:

• Updated Building Codes: New standards have been introduced to improve resilience to natural disasters. While this can help protect homes, it often increases the cost of rebuilding—and therefore the amount of insurance you may need.
• Clearer Disclosure Requirements: Insurers are now required to provide more straightforward explanations of policy exclusions, sub-limits, and optional covers. This is intended to help policyholders better understand what is and isn’t covered.
• Disaster Insurance Pool: A government-backed pool has been established to help make insurance more affordable in high-risk regions, but it’s still important to check that your sums insured are adequate for your situation.
• Inflation Adjustments: Some insurers now automatically increase sums insured to reflect inflation and rising costs, but this is not universal and may not always keep pace with actual market conditions.

These changes are designed to make insurance more transparent and responsive, but it remains your responsibility to ensure your cover is up to date.

Taking a proactive approach is the best way to avoid being caught out by underinsurance. Here are practical steps you can take in 2026:

1. Review Your Policy Regularly

Don’t wait for your renewal notice. Review your insurance policy at least once a year, or whenever you make significant changes to your home or possessions. Check the sums insured and make sure they reflect current rebuilding or replacement costs.

2. Use Online Calculators

Most insurers and industry bodies offer calculators to help estimate the cost of rebuilding your home or replacing your contents. These tools can help you get a more accurate picture of the cover you need for your postcode and property type.

3. Consider All Costs

When calculating your sums insured, remember to include costs like demolition, debris removal, and professional fees (such as architects or engineers), not just the basic rebuild or replacement value.

4. Ask for Clarity

With new disclosure rules in place, don’t hesitate to contact your insurer for plain-English explanations of any exclusions, sub-limits, or optional covers. Understanding your policy is key to avoiding surprises at claim time.

5. Check for Natural Disaster Cover

If you live in a high-risk area for floods, bushfires, or cyclones, review your policy to ensure you’re covered for relevant events. The government’s disaster insurance pool may help with affordability, but you still need to confirm your sums insured are adequate.

6. Keep Records of Your Assets

Maintain a digital inventory of your possessions, including receipts and photos for high-value items. This can make claims easier and help you determine the right level of contents cover.

7. Consider Professional Advice

If you’re unsure about your cover, consider speaking with an insurance broker. Brokers can help you understand your needs and find policies that suit your situation. Learn more about working with brokers at [/insurance/personal/insurance-brokers].

Example: Updating Cover After Renovations

Suppose you’ve recently renovated your home or made significant purchases. It’s important to update your insurance policy to reflect these changes. For instance, after a major renovation, increasing your sum insured can ensure you’re not left with a shortfall if you need to rebuild.

Insurance is not a set-and-forget product. Changes in your personal circumstances, property values, and the broader insurance landscape mean your cover can quickly become outdated. Staying informed and reviewing your policy regularly is the best way to protect yourself from underinsurance.

If you’re unsure where to start, consider reading more about home insurance basics at [/insurance/personal/home-insurance].

What is underinsurance?

Underinsurance is when your insurance policy does not provide enough cover to fully repair, rebuild, or replace your property or possessions after a loss.

How can I check if I’m underinsured?

Compare your policy’s sums insured with current rebuilding or replacement costs. Use online calculators or consult a professional valuer if needed.

What happens if I am underinsured and need to make a claim?

If your cover is too low, your claim payout may not be enough to cover the full cost of repairs or replacement, leaving you to pay the difference.

How often should I review my insurance policy?

It’s recommended to review your policy at least once a year, and after any major changes to your property or possessions.

Underinsurance remains a real risk for many Australians, especially as costs and risks continue to rise in 2026. By reviewing your policy regularly, understanding what’s covered, and taking steps to keep your sums insured up to date, you can help ensure you’re protected when it matters most.