Remortgaging Before Your Fix Ends: When Does Paying the ERC Make Sense in 2026?
Paying an Early Repayment Charge to exit a high-rate fix early can save thousands — if the maths work. Here's the break-even calculation, current 2026 market rates, and when to wait instead.
The core question: pay the ERC or stay put?
Fixed-rate mortgages offer certainty — you know exactly what you will pay each month. The downside is the Early Repayment Charge (ERC): a penalty for leaving before your fixed period ends.
When mortgage rates were rising in 2022–2023, borrowers locked into older low rates wanted to stay put. Now, with rates having stabilised and potentially easing, the question flips: some borrowers locked into higher fixed rates from 2022–2023 are asking whether it makes sense to pay the ERC to access better rates now.
The answer is purely mathematical — and the maths is straightforward.
The break-even calculation
Break-even months = ERC amount ÷ monthly interest saving
If you have more months remaining on your current fix than the break-even number, remortgaging early is profitable.
Example: Tom has a £200,000 mortgage on a 5.8% fixed rate with 4 years (48 months) remaining. A new 2-year fix at 4.2% is available.
Monthly payment comparison:
- Current rate 5.8% on £200k remaining: approximately £1,259/month
- New rate 4.2% on £200k: approximately £1,081/month
- Monthly saving: £178/month
ERC:
- Tom is in year 2 of a 5-year fix; ERC = 3% of outstanding balance
- 3% × £200,000 = £6,000
Break-even: £6,000 ÷ £178 = 33.7 months
Tom has 48 months remaining. 48 > 33.7, so remortgaging early saves money.
After 34 months of paying £178/month less, the ERC is fully recouped. The remaining 14 months of the fix period represent pure saving: 14 × £178 = £2,492 net benefit after accounting for the ERC cost.
Now if Tom had only 24 months remaining:
- Break-even = 33.7 months.
- 24 < 33.7 — remortgaging early does not break even. He should wait.
Adjusting for legal fees
If you are doing a full remortgage (changing lender), there are also legal and valuation fees of typically £500–£1,500. Add these to your break-even calculation:
Total cost to exit = ERC + legal fees
In Tom's case: £6,000 + £1,000 (legal) = £7,000.
Break-even: £7,000 ÷ £178 = 39.3 months
Now Tom needs 40 months remaining (not 34) to break even. Still profitable with 48 months left, but less so. The margin of benefit drops from £2,492 to £1,556.
If remortgaging to the same lender via a product transfer, legal fees are typically £0, making early exit more likely to be worthwhile.
The 6-month lock-in strategy: the smartest timing
Most lenders allow you to secure a new rate up to 6 months before your current deal ends — with no ERC. This is the strategy most borrowers should use, and it costs nothing.
How it works:
- Your current fix ends in, say, September 2026.
- From March 2026 (6 months before), you can apply to lock in a new rate with your current lender (product transfer) or a new lender (remortgage).
- The new rate does not activate until September 2026. You continue paying your current rate in the meantime.
- If rates fall further between March and September, many lenders/brokers allow you to switch to a better product before the new deal starts.
Why this is important: Do not wait until your fix expires to think about remortgaging. If you wait until the last month, you may fall onto your lender's Standard Variable Rate (SVR) — typically 6.5–8% — while the remortgage completes. SVR periods lasting even 1–2 months can cost £200–£500 extra in interest.
Product transfer vs full remortgage: which to choose?
Product transfer (same lender)
- Pros: No legal or valuation fees, faster (often done online in minutes), no full affordability assessment for most lenders.
- Cons: Limited to your current lender's product range — may not be the best rate in the market.
- Best for: Those in a hurry, those with complex income that makes affordability tricky with a new lender, or when the current lender has competitive rates.
Full remortgage (new lender)
- Pros: Access to all products across the market — could find significantly better rates, especially if your LTV has improved.
- Cons: Requires a new application, credit check, property valuation (usually desk-based/free for remortgages), and legal work. Costs £500–£1,500. Takes 4–8 weeks to complete.
- Best for: Those whose LTV has improved significantly (e.g. from 75% to 60% through overpayments), first-time remortgagors who took out a higher-LTV deal when they bought, or when current lender's rates are uncompetitive.
Current mortgage market: May 2026
With the Bank of England base rate at 4.25% following rate cuts from the 2023 peak of 5.25%, fixed mortgage rates have eased considerably from their 2023 highs.
| Mortgage type | Approx. rate range (May 2026) |
|---|---|
| 2-year fix, 60% LTV | 4.20–4.45% |
| 2-year fix, 75% LTV | 4.40–4.65% |
| 2-year fix, 90% LTV | 4.80–5.20% |
| 5-year fix, 60% LTV | 4.30–4.55% |
| 5-year fix, 75% LTV | 4.50–4.70% |
| 5-year fix, 90% LTV | 4.85–5.25% |
These are broad market ranges — individual rates vary significantly by lender, arrangement fee, and borrower profile. The cheapest rates often come with a fee (£999–£1,499) that must be factored into the true cost of the product.
2-year vs 5-year fix in 2026?
With the 2-year and 5-year fix rates currently close together (within ~0.1–0.2%), the choice is about uncertainty:
- 5-year fix: more certainty, protects against rate rises for longer, beneficial if rates increase.
- 2-year fix: more flexibility, shorter exposure if rates fall further, review point sooner.
Markets in May 2026 are pricing modest further BoE cuts over the next 12–18 months. If that view is correct, a 2-year fix reviewed in 2028 could access lower rates. If the rate view is wrong (e.g. inflation re-accelerates), a 5-year fix at current levels looks good value.
ERC schedules: how they typically decline
| Year of fixed period | Typical ERC |
|---|---|
| Year 1 | 5% |
| Year 2 | 4% |
| Year 3 | 3% |
| Year 4 | 2% |
| Year 5 | 1% |
Check your specific mortgage offer — some lenders use flat ERCs (same % throughout), and some use different schedules. The ERC applies to the outstanding mortgage balance at the time of exit, not the original loan amount.
Worked example: Sophie (mortgage locked into 2022 rates)
Sophie took out a £240,000 mortgage in July 2022 at a rate of 5.6% fixed for 5 years (ending July 2027). Her current outstanding balance (May 2026) is approximately £216,000.
How long remaining: 14 months until her fix ends.
Current monthly payment: approximately £1,480/month.
New rate available: 4.35% 2-year fix. New payment on £216,000: approximately £1,180/month. Monthly saving: £300/month.
ERC: Year 4 of a 5-year fix = 2% of £216,000 = £4,320.
Break-even: £4,320 ÷ £300 = 14.4 months.
Sophie has 14 months remaining. The break-even is 14.4 months — she would break even just after her current fix expires anyway, meaning paying the ERC does not make sense. She should wait 14 months until July 2027, when she can remortgage ERC-free.
Sophie's correct action: In January 2027 (6 months before her July 2027 fix expires), she locks in a new rate — ERC-free. By doing this promptly she guarantees she does not fall onto the SVR between July 2027 and completion of her remortgage.
Quick reference: lender product transfer portals
Major lenders with online product transfer portals that let you lock in new rates:
- Halifax: Manage Your Mortgage portal.
- Nationwide: Online Banking product switch.
- Barclays: Barclays app / online banking rate switch.
- NatWest / RBS: Online switching tool.
- Santander: Online product transfer.
All major lenders allow you to instruct a product transfer up to 6 months before your current rate ends.
Sources
- Bank of England: Monetary Policy decisions 2026
- Money Helper: Remortgaging
- FCA: Mortgage intermediaries — product transfers
- MoneySavingExpert: Remortgage guide
- Which?: Product transfers explained
Frequently asked questions
What is an Early Repayment Charge (ERC) and how is it calculated?
An ERC is a penalty charged by your lender if you repay your mortgage (or overpay beyond the annual limit) during a fixed or discounted rate period. It is usually expressed as a percentage of the outstanding loan — typically 1–5% in the early years, reducing each year. On a £200,000 mortgage with a 3% ERC, the penalty is £6,000.
When does remortgaging early make financial sense?
Early remortgaging makes sense if the monthly interest saving from a lower rate saves more over the remaining fix period than the ERC costs upfront. The break-even formula is: ERC amount ÷ monthly interest saving = break-even months. If you have more months remaining than the break-even point, remortgaging early is worth it.
Can I lock in a new rate before my current fix ends without paying an ERC?
Yes — most lenders and brokers allow you to secure a new rate up to 6 months before your current deal ends. This is entirely ERC-free and is the recommended strategy for most borrowers. If rates fall further before completion, you can often switch to a better offer before the new deal starts.
What is a product transfer and how does it differ from a remortgage?
A product transfer is when you switch to a new rate with your existing lender. It is faster (no legal work required), cheaper (no valuation or legal fees), and does not require a full affordability assessment in most cases. The downside is you are limited to your current lender's products rather than the whole market. A full remortgage gives access to all lenders but costs £500–£1,500 in fees.
What are current fixed mortgage rates in May 2026?
As of May 2026, with the Bank of England base rate at 4.25%, two-year fixed rates are broadly available in the 4.2–4.7% range, and five-year fixes are in the 4.3–4.8% range — though this varies significantly with LTV. The best rates are typically reserved for borrowers with 60% LTV or less.
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