Definition
Porting usually transfers the product terms rather than moving the original loan automatically. The lender carries out a new application, affordability assessment and property check. Extra borrowing may sit on a different product, and timing can affect ERC treatment.
Practical example
A borrower moving to a more expensive home might port the existing fixed-rate balance and take a separate product for the additional loan.
Why it matters
A portable product is not a guarantee that the lender will approve the new property or borrowing amount.
Remortgage guideSource and review
Reviewed 16 July 2026. Product criteria and rules can change.
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