Mortgage Product Fee: detailed guide

A product fee is a one-off charge set by a UK mortgage lender to access a specific mortgage deal. It helps cover underwriting, administration, and risk costs and often allows the lender to offer a lower headline interest rate than fee-free mortgage products.

It can be worth paying a product fee on a mortgage if the lower interest rate offered results in overall savings across the initial fixed or discounted term. A true cost calculation is essential to weigh up whether the lower monthly repayments outweigh the fee.

No, a mortgage product fee does not usually have to be paid upfront in the UK. Most lenders allow the fee to be paid at completion or added to the mortgage balance, although adding it to the loan means interest is charged on the fee for the full mortgage term.

Adding a product fee to a mortgage can reduce upfront costs, but it usually increases the total amount repayable because interest is charged on the fee. Paying upfront is often cheaper overall, while adding it may suit borrowers who need to preserve cash for deposit, legal fees or moving costs.

Yes, in the UK mortgage product fees on buy-to-let properties are generally treated as finance costs and can be offset against rental income for tax purposes. For individual landlords, relief is given as a basic rate tax credit rather than a full deduction from income.