The Short Answer
For most UK homeowners remortgaging in 2026, a whole-of-market mortgage broker will find a cheaper deal than your existing bank. The reason is simple: your bank only sees its own products, while a broker has live access to hundreds of mortgage products from every major lender and many specialist ones.
But there are genuine exceptions. If you have a straightforward case, a high-street bank account with a preferential-rate loyalty offer, and no appetite for paperwork, going direct may save you the broker fee without costing much in the rate. The decision comes down to five factors: rate competitiveness, case complexity, fees, advice protections, and time.
We cover each of these below so you can make an informed call for your own situation.
What a Bank Can Offer You
When you approach your existing bank about remortgaging, they will show you the products they offer to existing customers. These are typically a handful of fixed-rate options (usually 2, 3, 5 and sometimes 10-year fixes), one or two tracker products, and their standard variable rate as a fallback.
Banks sometimes offer preferential rates to existing current account or mortgage customers, and they can move faster on a product transfer (staying with the same lender) because they already hold your affordability data. The downside is obvious: you are limited to one lender's appetite. If that lender has tightened its criteria for self-employed borrowers, or does not like the income mix you have, you are stuck.
Banks sell under the FCA advised or non-advised sales regime. If you take advice from the bank, they are only required to recommend the best product from their range — not the best product in the market. That is a critical distinction.
What a Whole-of-Market Broker Can Offer You
A whole-of-market mortgage broker has access to rates from 90+ UK lenders, including high-street banks, building societies, challenger banks, and specialist lenders. They place your case with whichever lender offers the most suitable deal for your circumstances — not whichever lender pays them the highest commission.
Because brokers see the whole market, they can often find rates that are 0.3% to 0.8% lower than the best deal your own bank would offer you. On a £250,000 remortgage over 5 years, a 0.5% rate improvement saves roughly £6,250 in interest. That is typically much larger than any broker fee.
Brokers also know which lenders accept which quirks — bonus income, contractor day-rates, recent credit events, BTL portfolios with 4+ properties, expat situations, or interest-only maturities. When your case is anything other than textbook, this matters far more than a headline rate.
RemortgageSaver is not a broker. We are an introducer — we connect you to an FCA-authorised whole-of-market mortgage broker who provides the regulated advice. We are paid a fee by the broker for the introduction, which is disclosed up front.
Rate Comparison: Do Brokers Actually Get Better Rates?
Yes, almost always — but the gap varies by case type. For a vanilla case (employed, good credit, 60% LTV, no complications), the broker-sourced rate is typically 0.2%–0.4% lower than the bank's existing-customer offer, because the broker can access rates from smaller lenders who compete hardest on price.
For a complex case (self-employed, BTL, credit blips, interest-only), the gap widens dramatically. Your bank may decline the case entirely or only offer an adverse-rate product. A broker can place you with a specialist lender priced 1%–2% lower. This is where broker value is greatest.
One edge case: if your current bank has a large market share and is actively protecting its back-book (pricing existing customer remortgages aggressively to stop churn), their loyalty rate can match or beat the market. Nationwide, Halifax, and HSBC have all run such pricing at various points. A broker will tell you honestly if that is the case rather than lose your business by pushing you elsewhere.
Fees: How Each Route Actually Costs You
Banks do not charge you a separate advice fee when you deal with them directly. Their margin is baked into the product rate. You will still pay arrangement fees, valuation fees, and legal costs — though many remortgage products include free legals and valuation as a retention incentive.
Brokers can charge in three ways: a flat fee to you (typical range £300–£750), a percentage of the loan (rare on residential; more common on specialist), or lender-paid commission only (no fee to you, broker is paid by the lender). Most residential remortgage cases in 2026 are either low-fee or fee-free to the borrower. The broker declares exactly how they will be paid before you proceed — the FCA requires this disclosure.
The maths worth doing: compare the total cost over your deal period (usually 5 years) including rate × balance + arrangement fees + any broker fee. A broker-sourced deal 0.3% cheaper on a £200,000 balance saves £3,000 over 5 years — which easily covers a £500 broker fee with £2,500 left over. Run the numbers for your own balance before deciding.
Advice Protections: Where the FCA Sits
This is the area borrowers understand least. Mortgage advice is regulated by the Financial Conduct Authority under the Mortgage Conduct of Business (MCOB) rules. There are three flavours of sale:
- Advised whole-of-market — a broker assesses your circumstances and recommends the most suitable product from across the market. You have full recourse to the Financial Ombudsman Service if the advice turns out to be unsuitable.
- Advised, single-firm — a bank adviser recommends the most suitable product from their range only. Recourse to FOS still applies, but the pool of products considered was narrower.
- Execution-only (non-advised) — you pick the product, no recommendation is given, and you waive your right to complain about suitability.
Only whole-of-market advised sales give you both the product choice and the full advice protections. For a decision worth thousands of pounds of interest over a 5-year term, this is usually worth prioritising.
Speed: Which Route Completes Faster?
Product transfer with your existing bank is the fastest route — typically 2 to 4 weeks from application to switch, because no solicitor, valuation or full underwrite is needed. Your bank already holds the file.
A remortgage to a new lender, whether arranged by your bank (rare — banks do not move you to competitors) or by a broker, takes 4 to 8 weeks because a new lender needs to underwrite you fresh, value your property, and have solicitors transfer the charge. A good broker will start the application 3–4 months before your current deal ends to allow for underwriting hiccups.
If you are within 2 months of your deal ending and have not started, a product transfer through your bank may be the pragmatic choice to avoid slipping to the SVR. A broker can also arrange a rapid remortgage with lenders known for quick turnaround — this is case-by-case.
When the Bank Route Makes More Sense
Going direct to your bank is the better choice when: (1) you have a very simple case (PAYE employed, clean credit, low LTV), (2) your bank is pricing aggressively to retain you, (3) you are time-pressured and a product transfer is the only way to avoid the SVR, or (4) you actively dislike paperwork and are willing to pay a rate premium to avoid it.
For everyone else — and especially for self-employed borrowers, those with any credit complexity, BTL landlords, those seeking to release equity, or those on interest-only — a whole-of-market broker is almost always the better financial outcome.
How to Compare Your Two Options
The simplest test is to get both quotes and put them side by side. Ask your bank: "What is the best rate you can offer me on a 5-year fix at my current LTV?" Then get a broker to quote the whole market on the same criteria. Compare:
- Initial rate and product fee
- Revert rate (SVR) after the fixed period
- Any advice or broker fee
- Free legals and valuation (yes/no)
- Early repayment charge schedule
- Total cost over 5 years = (rate × balance × 5) + all fees
The cheaper total wins — but factor in the advice protection quality too. A 0.1% saving is not worth giving up whole-of-market advice.
If you want to see what a whole-of-market broker could offer you without committing, check your options below. We pass your details to an FCA-authorised broker who will quote the market free of charge.
Important: Your home may be repossessed if you do not keep up repayments on your mortgage. There will be a fee for mortgage advice. The actual rate available will depend on your circumstances. Think carefully before securing other debts against your home.