The remortgage calendar — what to do when
- 6 months out: Review your finances. Pull credit reports. Get a property valuation indication (Rightmove sold prices, Zoopla estimates).
- 5 months out: Speak to a whole-of-market broker. Compare new lender vs product transfer with existing lender.
- 4 months out: Submit application. Lender will issue an offer that's valid for 3–6 months.
- 2 months out: Valuation and underwriting complete. Offer issued.
- 1 month out: Conveyancer instructed (often free on remortgage).
- Day 0: Complete on the day your old fix ends.
The cost of falling onto SVR
Worked example: £250,000 mortgage, 25-year term remaining.
- Old fix rate: 2.5%. Monthly payment: £1,122.
- New remortgage at 4.5%: monthly payment £1,390 (+£268).
- SVR at 8.0%: monthly payment £1,930 (+£808).
One month on SVR costs £540 more than the new remortgage. Three months on SVR while you faff = £1,620. That's the cost of not starting the remortgage process early enough.
Reading the 2026 rate environment
Mortgage rates follow swap rates, which follow Bank of England base rate expectations. In 2026:
- Base rate sits around 4.0% with the MPC signalling modest cuts.
- 2-year swaps and 5-year swaps are close — the curve is roughly flat.
- 5-year fixed product pricing slightly below 2-year fixed.
- Trackers compete close to 2-year fixes.
Strategic implication: locking a 5-year fix now removes refinance risk for half a decade. If rates fall, your absolute saving is modest. If rates rise, you're well-protected.
When to break a fix early
The maths: ERC + arrangement fees + legal fees vs interest saving over remaining fix term.
Worked example: £250,000 mortgage, 3 years left on a 5.5% fix, ERC = 3% (£7,500). Available new rate: 4.2%.
- Interest saving: 1.3% × £250k × 3 years = £9,750.
- ERC cost: £7,500.
- New arrangement fee: £999.
- Net saving: £9,750 − £7,500 − £999 = £1,251 over 3 years.
Worth doing, but the margin is slim. Most break-the-fix scenarios need a rate gap of 1.5%+ to be clearly worthwhile.
Rate-switch policies — the underused feature
Some UK lenders allow you to switch to a lower rate after application but before completion if market rates fall. Halifax, Barclays, Nationwide and HSBC all have varying versions. Worth asking your broker which lenders offer this — it lets you lock now without losing if rates drop later.
The big timing mistakes
- Waiting until your fix ends — guaranteed SVR exposure.
- Trying to time the bottom of the rate market — usually misses by months.
- Auto-accepting your lender's product transfer offer without comparing.
- Ignoring rate-switch policies when shopping the market.
- Forgetting that arrangement fees, legal fees and valuation costs eat into headline savings.
Pros
- Locking 6 months early protects against SVR exposure.
- Free-legals remortgage products are common in 2026.
- Rate-switch lenders let you benefit from falling rates after lock-in.
- Product transfers with current lender avoid full underwriting.
- 5-year fixes give 5 years of remortgage-free certainty.
Cons
- Breaking a fix early only pays in specific circumstances.
- ERCs of 3%–5% can dwarf any rate saving.
- Falling onto SVR even briefly is expensive.
- Trying to time the market usually backfires.
- Arrangement fees and legal costs erode the headline saving.