UK mortgage & remortgage guides
Last checked UK · illustrative onlyNot a lender or brokerAboutDisclaimer
Concise Rodway Labs explainers tied to our calculators. This hub is the overview: which guide to open first when a fixed rate is ending, how product transfers differ from a full remortgage, why fees and early repayment charges (ERCs) sit before rate-hunting, and how process, LTV and nation rules fit. Illustrative only — not personalised advice and not an FCA-regulated recommendation.
How to use this guides hub
Each child page answers one decision question. The calculators answer “what if these inputs are true?” Guides answer “which inputs matter, and what soft factors the spreadsheet will not show?” Start with timing if your deal end is within about six months. Open product-transfer pages when your lender has offered a retention deal. Open fee and ERC pages when a headline rate looks cheap but the sterling stack is unclear. Process and documents pages help when you are already mid-application. Nation and LTV pages sit beside those when the rules or band change the story.
Fees and ERCs still come before rates here, same as on the costs hub and comparisons hub. Independent consumer material from MoneyHelper is a useful non-commercial starting point; your own offers and Key Facts Illustration remain the source of truth. Scenario rates on this site are labelled EXAMPLE, not live market quotes.
Timing: when a fixed rate is ending
Most remortgage work starts because a fixed deal is running down — or because rolling onto the lender’s standard variable rate (SVR) would cost more than switching. When to remortgage frames a six-month runway. Fixed rate ending is the last-eight-weeks checklist. Rolling onto SVR covers what “doing nothing” usually means in sterling terms. If you are leaving early, remortgaging early pairs with how ERCs are calculated so the charge is measured before the rate gap.
Product transfer versus full remortgage
A product transfer (retention deal) keeps you with the same lender on a new rate product. Underwriting is often lighter; fees are often low or nil; ERC usually does not apply if you complete at deal end. Rate choice is limited to that lender’s retention range. A full remortgage replaces the loan — often with a different lender — and typically brings valuation, legal work and fuller affordability checks, with wider market access and ERC if you leave early.
Read product transfer explained for concepts, then the worked EXAMPLE comparison for two-column maths on the shared EXAMPLE house. The narrative factor table lives under comparisons; the editable tool is the remortgage vs product transfer calculator. If credit or affordability may be tight, a transfer that completes can beat a cheaper advertised remortgage you cannot obtain.
Fees, ERCs and the sterling stack
Product or booking fees, legal/solicitor costs, valuation, broker fees, exit/discharge and any ERC still in force often decide the deal before a small rate gap does. Remortgage fees and mortgage fees explained inventory the lines. Cashback vs lower fee frames incentives that reverse if you leave early. Put every line into the true cost calculator or the ERC estimator. Cost-hub children cover early repayment charges and broker vs direct in more depth.
Process, credit, LTV and nations
Remortgage process and how long a remortgage takes set expectations for valuation and conveyancing. Documents checklist and how to read an illustration help when paperwork arrives. Credit and affordability when switching covers re-underwriting risk. LTV bands and overpaying vs remortgaging sit beside the LTV and overpayment calculators. England, NI, Scotland and Wales flags where property-tax and conveyancing differences matter — Remortgage Lab’s England & Northern Ireland focus is stated where SDLT rules are cited.
EXAMPLE house used across Remortgage Lab
Where sterling cues help, guides reuse one labelled EXAMPLE case: £185,000 balance, 22 years remaining, current EXAMPLE rate 4.19%, 4 months left on the deal, EXAMPLE ERC 2% (£3,700), transfer EXAMPLE 4.39%, new-lender EXAMPLE 4.14%, fees to switch £1,499, cashback £250, 24-month comparison horizon. Edit every input in the calculators to match your offer. Last checked: 2 November 2026.
Start here
If your fixed rate is ending soon, begin with timing and product transfer before fee deep-dives.
When to remortgage: start six months before your fix ends
Six-month UK remortgage timeline: start early, switch the day any ERC ends, and see what doing nothing costs in a worked EXAMPLE. Last checked 15 October 2026.
Product transfer explained: how it works
What a UK product transfer is versus a full remortgage — fees, ERCs, time and criteria. Conceptual guide; full £ EXAMPLE on the companion page. Last checked September 2026.
Product transfer vs remortgage: a worked EXAMPLE in pounds
Same EXAMPLE house, two columns: net cost after ERC, fees, cashback and 24-month interest. Fees and ERCs decide before the rate gap. Last checked September 2026.
What happens when your fixed-rate mortgage ends
A UK fixed rate ending usually means SVR unless you arrange a product transfer or remortgage. Last-eight-weeks plan, documents, and a worked EXAMPLE.
More guides
How early repayment charges are calculated
Percentage of balance, months of interest and a stepped 5/4/3/2/1% schedule — worked EXAMPLE figures on a £185k balance. Always check the offer wording. Last checked October 2026.
How much does it cost to remortgage? Fees and solicitor costs
UK remortgage fees, legal and solicitor costs — indicative ranges plus a worked EXAMPLE fee stack. Fees before rate-hunting. Last checked October 2026.
Rolling onto SVR — one-year cost vs a product transfer
One-year EXAMPLE SVR cost versus booking a product transfer on the shared EXAMPLE house. Use your own lender’s SVR — 7.49% here is labelled EXAMPLE only.
Remortgaging early — when exit can still win on paper
Leaving before the deal end date: EXAMPLE ERC, fees and true-cost maths showing when early exit can still win on paper — and when waiting wins.
Remortgage documents checklist (UK)
Practical UK packing list for remortgage or product transfer — ID, income, mortgage paperwork and property papers. Process only, not advice.
How to read a mortgage illustration (ESIS / KFI)
Map ESIS, Key Facts Illustration and mortgage illustration fields — rate, fees, ERC, term and repayment — to our calculators. Use your own document.
Credit and affordability when switching mortgage
Why a cheaper advertised remortgage rate can be unusable if credit or affordability criteria fail — process only, not credit-repair tips. Ballpark tools are not lender decisions.
Overpay or remortgage? Which saves more
While an ERC applies, overpaying within your allowance usually beats paying the charge to switch. Worked £185k EXAMPLE. Last checked 15 October 2026.
Cashback vs lower fee — when cashback loses after ERC and fees
Worked EXAMPLE: when a remortgage cashback deal loses to a lower-fee path after ERC and fees. Shared EXAMPLE house — rates and cashback labelled EXAMPLE.
Remortgage across England, NI, Scotland and Wales
UK-wide remortgage process vs SDLT, LBTT and LTT — calculator is England & NI only. When remortgage usually does not trigger stamp duty. Last checked September 2026.
How long a remortgage takes (UK)
Week-by-week UK timeline: product transfer vs full switch. Typical ranges only — not a promise of your completion date. Last checked September 2026.
How remortgaging works in the UK
Step-by-step UK remortgage process with timeline and worked EXAMPLE on £185k — AIP, valuation, offer, completion. Last checked September 2026.
LTV bands explained: 60%, 75%, 85% and 90%
UK LTV bands with worked EXAMPLE on £185k — equity to cross 75% or 60%, MoneyHelper and UK Finance context. Last checked September 2026.
Mortgage fee types explained (UK)
UK mortgage product, valuation, legal and broker fees with worked EXAMPLE on £185k — fees before rate-hunting. Last checked September 2026.
Related hubs and tools
Cost stacking and broker framing: costs. Side-by-side scenarios: comparisons. Short definitions: glossary. All calculators: calculators. Assumptions: calculator methodology.
Illustrative only — not personalised financial advice, not a credit or mortgage offer, and not an FCA-regulated recommendation. Always check current lender terms, fees, ERC schedules and your Key Facts Illustration. England & Northern Ireland focus where tax/SDLT rules are cited; Scotland and Wales differ. Published by Rodway Labs.