Remortgage costs: fees and what to budget for

Remortgage costs depend on your existing mortgage and the new deal you choose. You may pay a product fee, advice fees, legal costs or charges for leaving your current lender. Some deals cover particular costs, but an early repayment charge or extra legal work can change the budget substantially.

There isn’t one fixed price for switching. To work out how much it could cost to remortgage, separate the cash you need before completion from fees added to the loan and the longer-term cost of borrowing.

What remortgage costs should you budget for?

Understanding how remortgaging works helps explain the fees. Moving to another lender involves replacing your existing mortgage, which can mean charges from the old lender, the new lender and the professionals involved.

Cost	Who charges it?	What to check
Product or arrangement fee	New lender	The selected deal’s fee, payment timing and whether it can be added to the loan
Early repayment charge (ERC)	Existing lender	The amount payable and the date the charge ends
Exit or account closure fee	Existing lender, if applicable	Whether it applies separately from an ERC
Valuation fee	New lender	Whether the lender’s valuation is included
Legal fees and disbursements	Solicitor or conveyancer	Standard work, VAT, third-party costs and any extras
Broker or advice fee	Broker	Amount, payment stages and refund terms
Transfer or administration charges	Lender or conveyancer	Whether they’re already included in another quoted fee

Fee names vary. A booking fee and a product fee aren’t necessarily separate charges. As one example, HSBC’s public remortgage table included products with a £999 booking fee when checked on 13 October 2026. That’s a lender-specific example, not an average or recommendation.

A lender’s valuation isn’t a structural survey. Don’t assume you’ll need a buyer-style survey just to switch.

Your outstanding mortgage balance is existing debt being replaced, not an extra switching fee. A dated redemption statement shows what must be paid to settle the old mortgage, including relevant interest and charges.

What could your remortgage budget look like?

These hypothetical examples show how individual charges change the budget. They assume a £200,000 existing mortgage, standard legal work and the lender’s valuation covered, no cashback, and all listed charges paid from cash.

Switching cost	A: No product fee or ERC	B: £999 product fee, no ERC	C: Same fees as B, plus an ERC
Product fee	£0	£999	£999
Example broker quote	£500	£500	£500
Example exit fee	£100	£100	£100
Example transfer charge	£30	£30	£30
Standard legal work and valuation	£0	£0	£0
Example ERC: 3% of £200,000	£0	£0	£6,000
Total switching charges	£630	£1,629	£7,629

The £500, £100, £30 and 3% figures are assumptions, not Monday Mortgages prices, market averages or live quotes. Actual charges depend on the contracts and services involved.

A no-product-fee deal still costs £630 in example A. In example C, the assumed ERC adds £6,000. Your lender’s own terms determine how any ERC is calculated.

Example A isn’t automatically the best mortgage: the examples don’t compare rates, eligibility or features. The totals also exclude ordinary mortgage interest, future repayments and non-standard legal work.

If example A included £300 cashback, its net charges would be £330. However, you might still need £630 before that cashback arrives.

When do you pay remortgage fees?

Some payments may be due when you apply or instruct a service. Others are settled at completion, while cashback may arrive afterwards. Check the timing rather than assuming every cost can wait until the switch finishes.

Ask:

• What must I pay at application or instruction?
• What is due at completion?
• Which charges are included in the old lender’s redemption figure?
• Which remortgage fees can be added to the new loan?
• When will any cashback arrive?
• What remains payable if the application doesn’t complete?

The mortgage illustration, often called an ESIS, explains relevant loan costs. FCA requirements for these illustrations include identifying amounts, recipients and payment timing, and highlighting costs unknown to the lender.

Check the broker’s agreement and legal quote too. One document won’t necessarily contain every bill.

Can you add remortgage fees to the mortgage?

Some lenders allow a product fee to be added to the mortgage. This can reduce the cash you need initially, but the fee becomes borrowing on which interest is charged.

In example B, adding only the £999 product fee to the loan would reduce cash charges from £1,629 to £630. You’d also owe an additional £999 on the mortgage. The charges haven’t disappeared.

Nationwide’s mortgage-fee guidance explains this distinction between paying upfront and adding the product fee to interest-bearing borrowing.

For illustration, repaying an extra £999 over 25 years at a constant 4.5%, through monthly capital-and-interest payments, adds about £5.55 per month. Total repayments attributable to that £999 would be about £1,666, including £667 interest.

That calculation assumes the rate stays unchanged throughout and the amount isn’t repaid early. It isn’t a forecast; actual interest depends on future rates and repayment behaviour.

Check how financing fees affects the lender’s affordability and loan-to-value rules. Don’t assume broker fees or ERCs can automatically be added too. If a charge is deducted from the mortgage advance, establish whether there’s a shortfall in the money needed to complete.

Do free legal work and cashback cover everything?

A package covering standard legal work may still leave you with extra charges. Leasehold work, ownership changes, title issues or dealing with another secured loan can fall outside the standard service.

Before treating the legal work as free, we’d check what’s included for your property and whether additional work has been quoted. Ask for an itemised total including VAT and third-party costs.

As a dated example, Nationwide’s offer terms, checked on 13 October 2026, offered free standard legal work or £500 cashback. Cashback was payable within one month of completion, and extra work could be chargeable.

Other lenders’ packages differ. Cashback might not match your legal bill or arrive in time to pay it. Compare the quote and incentive terms.

Do you pay stamp duty when you remortgage?

An ordinary remortgage without an ownership transaction doesn’t itself trigger Stamp Duty Land Tax (SDLT). HMRC treats mortgage security interests as exempt interests.

Transferring a share of the property or buying out an owner at the same time is a different matter. An ownership transaction may have tax consequences, and taking responsibility for mortgage debt can count towards the value exchanged.

GOV.UK’s ownership-transfer guidance explains relevant rules and exceptions. Don’t assume adding a partner, making a gift or separating is automatically tax-free.

SDLT applies in England and Northern Ireland. Wales and Scotland have different property taxes. If ownership is changing, ask your conveyancer to check the transaction-specific position.

How do you check whether switching is worth the cost?

Compare the new mortgage’s costs and features over the period you expect to keep it. Use the same starting balance, remaining term and repayment basis.

Include:

• Product fees and other switching charges.
• Cashback and the actual scope of legal or valuation cover.
• Any ERC on the existing deal.
• Interest on financed fees.
• The balance remaining at the end of the comparison period.
• Relevant features and restrictions.

A rough cash-flow calculation can help you screen an option. For example, £1,200 in cash charges divided by an assumed £60 monthly payment reduction gives 20 months to recover those charges through lower payments.

That isn’t proof of financial benefit. Different payments can also mean different amounts of capital repaid. Extending the term can reduce monthly payments while increasing the overall cost.

A mortgage comparison calculator can help you compare payments and product fees. Its displayed total uses payments over the fixed period plus the product fee; it excludes cashback, legal costs, valuations and ERCs. Treat it as a starting point.

Staying with your current lender through a product transfer may avoid some switching work, but the selected deal can still carry a product fee.

How can you get a clearer remortgage cost estimate?

Prepare your current balance, remaining term, deal-end date, ERC details and approximate property value. Mention any additional borrowing or ownership changes you need.

A dated redemption statement, proposed mortgage illustration and itemised legal and advice charges will help separate upfront cash from financed fees. We’d also check when the ERC ends before treating it as an unavoidable cost.

If you want help checking the charges alongside suitable mortgage options, our remortgage advice service explains how we can support your review. We’ll confirm applicable advice fees before you choose to proceed.