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Why has my price increased after updating my address?

This article is for Marshmallow policyholders who have moved to a new address and noticed that their car insurance premium has increased.

Updated this week

Why your address matters for insurance pricing

Each postcode in the UK carries its own level of insurance risk. This risk level is based on data about:

  • The number of claims made in the area

  • Types of incidents (like theft, vandalism, and collisions)

  • Local traffic levels and road types

  • Weather-related risks and crime rates

If your new postcode has a higher risk profile than your old one, your insurance premium will increase—even if all your other details stay the same.

What is risk recalculation?

When you change a key policy detail like your address, Marshmallow will recalculate your premium using updated pricing models. This ensures your premium reflects the current level of risk.

Example: If you move from a low-risk village to a busy urban area with higher rates of theft or accidents, your premium may go up—even if you have never made a claim yourself.

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