Understanding Underinsurance: Why Sum Insured Reviews Matter
Most Australians assume they're covered, until they're not.
Underinsurance is one of the most common issues affecting personal and business insurance policies, and it's becoming increasingly relevant as replacement and rebuild costs continue to rise. As property values change, construction costs increase, businesses grow and personal circumstances evolve, many policyholders find themselves carrying insurance that no longer reflects the true value of what they're protecting.
The consequences can be significant. When a claim occurs, the level of cover you believed was sufficient may not be enough to fully repair, rebuild or replace what has been lost.
At Remington's Insurance Brokers, we believe informed clients are better protected clients. Understanding your sum insured (and reviewing it regularly) is one of the most important steps you can take to ensure your insurance continues to work as intended when you need it most.
What Is a Sum Insured?
Your sum insured is the maximum amount your insurer will pay under a policy for a covered loss. It forms the foundation of your insurance cover, whether you're insuring your home, contents, commercial property, business assets, equipment or stock.
In simple terms, the sum insured should represent the amount required to repair, rebuild or replace the insured asset if a total loss were to occur.
The challenge is that many people establish a sum insured when they first take out a policy and rarely revisit it. Over time, that figure can become outdated as costs rise and circumstances change.
What Is Underinsurance?
Underinsurance occurs when the sum insured stated on your policy is less than the actual cost of repairing, rebuilding or replacing the insured asset at the time of a claim.
In Australia, underinsurance has been identified as a recurring issue for both households and businesses, particularly where sums insured have not been reviewed against current rebuild, replacement or reinstatement costs.
While insurance policies may continue to renew each year, the value of the assets they protect rarely remains static. This can create a gap between the cover in place and the actual cost of recovery following a loss.
Why Does Underinsurance Happen?
Underinsurance often develops gradually rather than through a single event.
Rising Construction and Replacement Costs
Building materials, labour costs, professional fees and supply chain expenses have all increased substantially in recent years. A home or commercial property that could have been rebuilt for a certain amount several years ago may now cost considerably more.
Without regular reviews, insurance cover can struggle to keep pace with these changing market conditions.
Renovations and Property Improvements
Many homeowners invest in renovations, extensions, landscaping or upgrades that increase the replacement value of their property.
If these improvements are not reflected in the policy's sum insured, the level of cover may no longer be adequate.
Business Growth and Asset Accumulation
Businesses frequently acquire new equipment, technology, stock or machinery as they grow. Additional inventory, expanded operations and new assets can significantly increase replacement values.
Without updating insurance schedules and sums insured, businesses may unknowingly expose themselves to underinsurance risks.
Changes in Personal Circumstances
Major life events can also affect insurance requirements. New possessions, home improvements, lifestyle changes and property acquisitions can all influence the level of cover required.
The Set-and-Forget Mentality
One of the most common causes of underinsurance is simply failing to review cover regularly. Many policyholders assume that because a policy renews each year, it remains appropriate.
Unfortunately, insurance needs often change much faster than people realise.
The Real Cost of Being Underinsured
The financial consequences of underinsurance often become apparent only after a claim has occurred.
If the cost of repairing or replacing an insured asset exceeds the sum insured, the policyholder may be required to cover the shortfall themselves.
In some circumstances, underinsurance may also activate a co-insurance or average clause, depending on the policy wording and the circumstances of the claim. Where applicable, the insurer may assess the claim proportionally based on the level of underinsurance, potentially reducing the amount payable.
The impact can be substantial.
For homeowners, it may mean having insufficient funds available to fully rebuild after a major loss.
For business owners, it could affect cash flow, operational continuity, asset replacement and long-term business viability.
At a time when financial certainty is needed most, underinsurance can create unexpected financial pressure that many policyholders are unprepared for.
Why Regular Sum Insured Reviews Matter
Insurance should evolve alongside the assets and risks it is designed to protect.
A sum insured review helps determine whether your current level of cover remains appropriate based on today's replacement and rebuild costs rather than historical estimates.
At Remington's Insurance Brokers, we work closely with clients to assess whether their policies continue to reflect their current circumstances.
A review may consider:
Current construction and rebuilding cost trends
Changes in property values and replacement costs
Business growth and asset acquisitions
Equipment and stock fluctuations
Renovations and property improvements
Updated professional valuations
Changes in personal or business circumstances
Importantly, a sum insured review is not simply about increasing cover. It is about ensuring that the cover you have aligns with the risks you face and the assets you are protecting.
The goal is confidence, knowing that your insurance is designed to respond appropriately if a significant loss occurs.
When Should You Review Your Sum Insured?
As a general guide, policyholders should consider reviewing their sums insured:
At each annual renewal
After completing renovations or upgrades
Following major purchases or asset acquisitions
When expanding business operations
After receiving updated valuations
During periods of significant inflation or rising construction costs
Whenever personal or business circumstances materially change
Regular reviews help ensure your policy remains aligned with current realities rather than outdated assumptions.
Don't Wait Until You Need to Claim
The best time to identify a coverage gap is before a loss occurs.
Whether your policy is approaching renewal, your business has grown, you've improved your property or you simply haven't reviewed your cover recently, taking the time to reassess your sums insured can provide valuable peace of mind.
At Remington's Insurance Brokers, we help individuals, families and businesses review their insurance arrangements to ensure their cover remains relevant, appropriate and fit for purpose.
Contact our team today to arrange a sum insured review and gain confidence that your insurance reflects the true value of what matters most.
Because effective insurance isn't simply about having a policy, it's about having the right protection in place when you need it most.