Lowering Your Insured Amount to Save: Smart or Underinsurance Risk?

Quick Answer: Is Reducing the Insured Amount a Good Idea?

The short answer is: usually not. Lowering the insured amount on your contents or buildings cover may save you a few euros per month, but in the event of a serious claim, it could mean tens of thousands of euros difference in your payout. Most Dutch insurers apply the proportionality rule (proportionaliteitsregel) for contents and buildings policies: if your insured sum is, say, 20% below the actual value, you'll only receive 80% of any claim payment. That could leave you seriously short after a fire or burglary. However, there are situations where it is safe to reduce the amount, for example after a significant downsize, a child moving out, or if you realize you've been over-insured for years. The key is knowing the true replacement value of your contents or the rebuilding cost of your home, and reviewing it regularly.

How Underinsurance Exactly Works (the Proportionality Rule)

Under Dutch insurance practice, when you are underinsured, the claim payment is reduced in proportion to the shortfall. For example: your contents are actually worth €60,000, but you have declared only €30,000 on your policy. A fire causes €20,000 of damage. The insurer calculates: (insured amount / actual value) × loss = payout. Here: (€30,000 / €60,000) × €20,000 = €10,000. So you receive only half the loss, even though the total loss is less than the actual value. This proportional method is standard in most contents and buildings policies, often under terms like 'proportionality', 'underinsurance clause' or 'quotum ruling'. It applies to partial losses, not just total losses.

For buildings insurance, the actual value is the rebuilding cost (herbouwwaarde), which can differ significantly from the market value or WOZ value. If your rebuilding cost is €300,000 and you insure only €200,000, you run a similar risk. Many homeowners mistakenly believe that the WOZ value is a good guide, but it includes land value; land does not need to be rebuilt.

Contents Insurance: Pitfalls and Correct Valuation

The insured amount for contents (inboedel) is normally based on the replacement value — what it costs to buy all your belongings new. Many people underestimate how much stuff they own. If you've had the same policy for a decade without adjusting the insured sum, chances are your contents have increased due to new purchases, more expensive electronics, or a larger household. Reducing the sum while your actual possessions have grown is a double risk.

• You may overlook that your wardrobe, books, or sports equipment together can easily be worth thousands of euros.
• Built-in kitchen appliances and other fixtures may count as contents if they are removable — check your policy.
• Collections, jewellery and art can add substantial value, often requiring separate valuables cover.
• Newly furnished children's rooms, home offices or hobby spaces can silently push up the total value.

To safely check whether your insured amount is correct, use a contents valuation checklist. It helps you estimate the replacement value room by room, so you avoid accidental underinsurance. If you also want to compare your contents insurance premium after that, learn how to compare home contents insurance without commission.

Buildings Insurance: Rebuilding Cost and Risks

For buildings insurance (opstalverzekering), the key figure is the rebuilding cost: what it would cost to reconstruct your home completely after a total loss. This is not the same as the market value (what you could sell it for) and not the WOZ value. Many owners try to save money by setting the insured amount to the WOZ value, but that often leaves them underinsured because the WOZ value includes land value. Additionally, home improvements, extensions, loft conversions, and sustainable installations like solar panels or heat pumps can raise the rebuilding cost. If you don't update your policy, you're underinsured.

• Type of house: detached, terraced or apartment. With a VvE (owners' association), the buildings insurance may be arranged centrally.
• Size and floor area of the property, including outbuildings like a garage or shed.
• Quality of finish: luxury kitchen, bathroom, flooring and other fixtures.
• Sustainable installations: solar panels, heat pumps, or extra insulation add to the rebuilding cost.

Considering reviewing your buildings cover? Learn how to compare buildings insurance without commission and what to watch for regarding rebuilding value.

When Is It Safe to Reduce the Insured Amount?

There are a few scenarios where lowering the insured sum makes sense, because your contents or rebuilding cost has genuinely decreased. For instance, after a major decluttering, moving to a smaller home, or when children leave home and you clear out their rooms. Or if you discover you've been significantly over-insured for years. But always do this after careful valuation, not a rough guess.

After major life events like separation or divorce, it's crucial to reassess your insured amounts, as belongings get divided and new living situations require different values.

Common Mistakes and Misunderstandings

Despite warnings, many policyholders make the same mistakes. They confuse second-hand value with new-for-old value, think the insurer will always pay out the insured amount (even if it's lower than the damage), or assume that a small shortfall won't matter. Unfortunately, the proportionality rule also applies to small claims: a €5,000 leak damage can be significantly reduced if your insured sum is too low.

• Focusing only on the premium when switching insurers, without checking the insured amount.
• Basing the insured amount on the current second-hand value of your stuff, while the policy requires new-for-old.
• Forgetting to increase the insured amount after a home renovation.
• Assuming underinsurance doesn't matter as long as the claim is smaller than the insured sum. The rule strictly applies to the loss amount.
• Buying a contents policy based on a quick online form without using a proper valuation tool.

Read our in-depth guide on preventing underinsurance for more background and concrete checklists.

When It Makes Sense to Have an Adviser Check

You can assess your insured amount yourself, but if you're unsure, having an independent adviser review your policies can bring peace of mind. Especially for buildings insurance where rebuilding cost depends on many factors, or for contents with valuable collections, it's wise not to rely solely on your own estimates. A commission-free advice firm can scan your entire package and point out risks, without any sales incentive. This is different from comparison websites, which primarily show premiums but lack in-depth policy analysis.

• You haven't reviewed your insured amount for three years or more.
• Major changes have occurred: renovation, expensive purchases, growing family, or downsizing.
• You're unsure whether your home's rebuilding cost is still accurate after recent construction price increases.

Read more about how the free damage insurance check works and what to expect. Also discover how commission-free insurance advice can help you pay only for the cover you actually need.