TSB mortgages: rates, fees and what to compare

A TSB mortgage should be compared on the rate, product fee, valuation/legal costs, early-repayment rules and the balance you expect to owe when the fixed period ends. Awards and brand reputation are context; they do not tell you which product is cheapest for your loan-to-value and timetable. For this mortgage, compare the lender illustration on the exact balance and LTV rather than extrapolating from an advertised example.

For this mortgage, compare the lender illustration on the exact balance and LTV rather than extrapolating from an advertised example.

Compare the full deal cost and loan-to-value

A lower rate with a large fee can lose to a slightly higher fee-free rate on a smaller mortgage. For an illustrative £150,000 balance, a £999 product fee is equivalent to about 0.67% of the balance before considering interest. Run the lender’s illustration for the period you expect to keep the deal.

Use your actual loan-to-value

Mortgage pricing changes by LTV band. Estimate the property value conservatively and divide the mortgage by that value. If a small overpayment moves you into a lower band, compare the cost of making that overpayment with the rate saving - but keep enough emergency cash outside the property.

Before acting, check the current TSB page or in-app quote because rates, limits and eligibility can change. Save the figure you actually relied on so you can reconstruct the decision later. For this mortgage, compare the lender illustration on the exact balance and LTV rather than extrapolating from an advertised example.

Look beyond the initial rate and early-repayment charge

Record what happens after the introductory period and set a review date six months before it ends. The aim is to avoid drifting onto a higher reversion rate simply because the remortgage decision arrived late.

Check early-repayment charges

If you may move, sell, receive a large bonus or refinance early, the ERC schedule matters as much as the rate. A very cheap fixed deal can become expensive if your circumstances change halfway through it.

A good decision remains workable after a minor setback. For this mortgage, compare the lender illustration on the exact balance and LTV rather than extrapolating from an advertised example.

Stress-test the payment

Ask what the payment would be at a meaningfully higher rate when the fix ends. A household that can afford £1,050 comfortably but struggles at £1,350 should plan the next deal well before expiry and avoid using every spare pound for other borrowing.

Stress-test affordability before committing

A direct lender can be competitive, but a mortgage broker may identify products from other lenders or deal with unusual income and property types. Compare the direct offer with the wider market if the loan is large or the circumstances are not straightforward.

Where another bank or product is the alternative, use identical assumptions. For this mortgage, compare the lender illustration on the exact balance and LTV rather than extrapolating from an advertised example.

Keep the mortgage documents together

Save the ESIS or mortgage illustration, offer, fee schedule and completion statement. Those documents show the assumptions behind the deal and make later switching or complaint questions much easier.

Keep the comparison period long enough to capture the whole introductory deal rather than one monthly payment. If two mortgages have different fees, compare the cash cost over the same period and then consider what happens when that period ends. A deal that is slightly cheaper today can become less attractive if it pushes you into a costly follow-on rate or restricts an overpayment you expect to make. The final choice should therefore connect the mortgage quote with your likely balance, moving plans and cash position at the end of the deal, not just the first direct debit.

Keep the decision record clear through completion

Rates, property values and personal circumstances can change between application and completion. If a materially better product appears, ask what switching the application would cost and whether it would delay completion; do not assume the first offer must remain the final choice.

Once the decision is made, set a calendar review. A review prevents an old decision from becoming an expensive default. For this mortgage, compare the lender illustration on the exact balance and LTV rather than extrapolating from an advertised example.

• Compare total deal-period cost
• Calculate your actual LTV
• Check ERCs and product fees
• Stress-test the post-fix payment
• Set a review date before expiry
• Keep the mortgage illustration and offer

A clean mortgage comparison should use the same property value, deposit, loan amount and comparison period for every deal. Then place the initial rate, product fee, incentives and expected balance at the end of the deal side by side. A lower headline rate can lose its advantage when a large fee is added to a relatively small mortgage, while a fee-paying deal can still make sense on a larger balance. The point is not to guess which structure is best, but to make every quote answer the same pounds-and-pence question before you commit.

Before completion, compare the mortgage illustration with the final offer line by line. Check the loan amount, term, repayment type, product fee and any incentives that influenced the choice. If something material changed during the application, ask for the cost comparison to be refreshed rather than relying on an earlier quote. Mortgage decisions are difficult to reverse cheaply once the transaction completes, so the final check should confirm that the deal being signed is still the deal you intended to buy.

Sources and verification

• TSB - official website
• Current Account Switch Service
• Financial Services Compensation Scheme
• MoneyHelper

MyBankAnswers uses official provider and UK regulatory sources wherever practical. Information is general and does not constitute financial advice.