Excelergy Excelergy Mortgages
← All articles

Fees

Fee or no fee? Working out which mortgage is really cheaper

4 min read · October 2026

Many lenders offer the same deal two ways: a lower rate with a product fee of around £1,000, or a slightly higher rate with no fee at all. Which one is cheaper is not a matter of opinion. It comes down to one thing above all: how much you are borrowing.

Why loan size decides it

The fee is a fixed amount. The saving from a lower rate grows with the size of the loan. So on a small mortgage the fee is hard to win back, and on a large one the lower rate wins easily.

Here is an illustrative 2 year fix offered two ways, 5.20% with a £999 fee or 5.45% with no fee, over a 25 year term:

LoanMonthly with fee dealMonthly with no-fee dealCheaper over 2 years
£100,000£596.30£611.11No fee, by £644
£150,000£894.45£916.66No fee, by £466
£240,000£1,431.12£1,466.65No fee, by £146
£400,000£2,385.21£2,444.42Fee deal, by £422

For this pair of deals the break-even point is a loan of about £281,000. Below that, the no-fee deal costs less over the two years; above it, paying the fee works out cheaper.

The lowest rate is not always the cheapest deal. Compare the total of all your payments over the deal plus the fee.

Adding the fee to the loan

Most lenders let you add the fee to the mortgage rather than paying it upfront. That keeps cash in your pocket, but you then pay interest on the fee for as long as it sits in the loan. Adding £999 to a 5.20% mortgage over 25 years adds about £6 a month. If the rate stayed the same for the whole term, you would pay around £790 in interest on top of the fee itself.

In practice you will remortgage long before then, so the real cost is smaller, but the fee does not disappear: it becomes part of what you owe.

Other things to check

Comparing on Excelergy Mortgages

The Cost over deal column already does this sum for your loan: every monthly payment during the deal plus the fee. Pick a term, then sort by Cost over deal to see which way round it falls for you. The Fee filter lets you look only at no-fee deals, or set a maximum fee.

Figures are illustrative, rounded, and assume a repayment mortgage. This is not financial advice; a qualified mortgage adviser can help you decide what suits your circumstances.

Compare current rates