5 Signs You Should Remortgage Early (Even With an Early Repayment Charge)
Most people assume you should always wait for your fixed deal to end before switching mortgages. That’s usually the safer default, because leaving early triggers an early repayment charge (ERC) that can run into thousands of pounds. But it isn’t always the right call. In some situations, the savings or the flexibility from switching outweigh the cost of the ERC, and staying put ends up being the more expensive option.
Here are five signs it could be worth remortgaging before your current deal ends, and how to work out whether the maths actually stacks up for your situation.
Remortgaging early: at a glance
| What an ERC is | A fee charged for leaving your mortgage deal before it ends, usually a percentage of the outstanding balance |
| When it can be worth paying | When the saving, flexibility or certainty gained outweighs the ERC and switching costs |
| Standard overpayment allowance | Usually 10% of the outstanding balance per year without penalty |
| Core decision tool | A break-even calculation comparing total switching cost against monthly savings |
| What the maths can't capture | The value of flexibility, certainty, or a mortgage structure that better fits your life |
5 signs it could be worth remortgaging early
- 1 You could save more than the ERC costs you, the interest saving beats the exit cost
- 2 You've moved into a better LTV bracket, your balance has dropped or your property's value has risen
- 3 Your circumstances have changed, your current mortgage no longer suits your life
- 4 Your current mortgage is restricting you, overpayments, porting, or further borrowing are blocked
- 5 You value payment certainty, enough to pay for peace of mind now rather than later
Sign 1: You could save more than the ERC costs you
If the interest saving from a new mortgage is greater than the early repayment charge and other switching costs, leaving your current deal early could make financial sense.
This is the clearest-cut reason to pay an ERC early. Market rates can move significantly between the time you took your current deal and today. If rates have dropped meaningfully and you still have a decent amount of time left on your fix, the monthly saving on a new rate can add up to more than the ERC in a surprisingly short period.
What you need to run the numbers on:
- The exact ERC on your current deal (usually a percentage of the outstanding balance)
- Any product, legal or valuation fees on the new deal
- The monthly saving between your current payment and the new one
- How many months are left on your current fixed rate
If the total saving over the remaining fix period beats the combined cost of the ERC and switching fees, paying to leave early can genuinely be the cheaper route.
The break-even calculation
-
1
Total cost to switchAdd the ERC plus any arrangement, legal, valuation and broker fees on the new deal
-
2
Monthly savingWork out the difference between your current monthly payment and the new one
-
3
Break-even in monthsDivide the total cost to switch by the monthly saving
Sign 2: You’ve moved into a better loan-to-value (LTV) bracket
If your mortgage balance has fallen or your property has increased in value, your LTV may now be lower. That could give you access to different mortgage deals, potentially making it worthwhile checking whether the benefit outweighs your ERC.
LTV brackets are where mortgage rates change most sharply. The jump from 90% LTV to 85%, or from 85% to 75%, can meaningfully reduce the rate you qualify for. Two things commonly move you into a better bracket:
- Your mortgage balance has reduced through regular monthly payments or overpayments
- Your property’s value has gone up since you took the mortgage out
In both cases, you may now qualify for a lower-rate product than you did when you first fixed. Whether it’s worth paying the ERC to access it comes back to the same break-even calculation as Sign 1.
Sign 3: Your circumstances have changed and your current mortgage no longer suits you
A change in income, family circumstances or financial plans can mean the mortgage that previously worked for you isn’t as suitable today. The benefit of switching isn’t always purely about getting a lower rate.
Common situations where this comes up:
- Your income has changed and you want to adjust the term to match a different repayment plan
- You’ve started a family and want to free up monthly cash flow
- You’re planning to help a family member financially and need to restructure your borrowing
- You’ve consolidated other debts and want to adjust your overall position
In these cases, the question isn’t “will I save money on interest?” It’s “is my current mortgage still the right structure for where my life is now?” If the answer is no, the ERC becomes the cost of fixing the structural issue rather than the cost of chasing a lower rate.
Sign 4: Your current mortgage is restricting what you want to do
What a fixed deal can restrict
Sign 5: You value payment certainty enough to pay to switch
The cheapest option isn’t necessarily the only consideration. Some homeowners may be uncomfortable with their future payment exposure and place a high value on securing a mortgage structure that better matches their attitude to risk.
This typically applies in two scenarios:
- You’re on a tracker or variable deal and worried about future rate rises. Switching to a fixed rate before the next potential rise can be worth paying to lock in known monthly payments
- You’re mid-way through a short fix and your remaining period doesn’t give you enough runway to feel comfortable. For example, if you’re 18 months into a 2-year fix, moving to a longer fix now can give you several more years of payment certainty, even factoring in the ERC
The value of certainty is personal. Not every homeowner needs the same level of protection, but for those who do, paying the ERC to secure it can be worth it.
How to work out whether paying the ERC is worth it
The core calculation is a straightforward break-even check: how long does it take for the monthly savings on your new deal to recover the cost of the ERC and switching fees?
The quick version:
- Total cost to switch: Add the ERC plus any arrangement, legal, valuation and broker fees on the new deal
- Monthly saving: Work out the difference between your current monthly payment and the new one
- Break-even in months: Divide the total cost to switch by the monthly saving
If the break-even is shorter than the remaining time on your current fix, you’re saving money by switching early. If it’s longer, you’re better off waiting.
What this calculation doesn’t capture:
- The value of flexibility (Sign 4) if your current deal is actively holding you back
- The value of certainty (Sign 5) if the peace of mind matters more than the pure maths
- Changes to your situation (Sign 3) where a structural fit is more important than the headline rate
A broker can run the numbers on your specific case, factor in all the fees properly, and give you a clear view of whether paying the ERC genuinely makes you better off.
Talk to Heron Financial
Deciding whether to pay an ERC and switch isn’t always obvious, and the maths needs to be right to make the call confidently. If you’re mid-way through a fixed deal and wondering whether it’s worth remortgaging early, we can run the break-even calculation for you, compare the full cost of switching against staying, and give you a clear answer based on your actual numbers.
Get Expert Mortgage Advice
Our experienced mortgage advisors can help you explore the right options based on your circumstances and goals. Book a free appointment with our advisors today.
See why homebuyers rate us 5 stars, your mortgage made easy.
Frequently Asked Questions for Heron Financial
Can I secure a new mortgage rate while still inside my current fix?
Yes. Most lenders let you secure a new deal 3 to 6 months before your current one expires, and you can usually lock in a rate before paying any ERC. If rates drop further before completion, some lenders will let you switch to the lower product.
Can I add the ERC to my new mortgage balance?
In many cases, yes. If you’re remortgaging to a new lender, the ERC can often be rolled into the new mortgage. You’ll pay interest on it over the term, so it’s not free, but it avoids needing the lump sum in cash.
Does a product transfer with my current lender avoid the ERC?
Not usually. Even with the same lender, moving to a new rate before your current product ends generally triggers the ERC. The exception is if your lender runs a specific loyalty promotion or waives the ERC on new deals taken in the final months of the current product.
How is the ERC calculated?
It’s usually a percentage of your outstanding mortgage balance, often on a sliding scale. On a 5-year fix, for example, the ERC might start at 5% in year 1 and drop by 1% each year. Your mortgage offer document (ESIS or KFI) sets out the exact figures.
Does the ERC apply if I'm selling my home?
Yes, unless you port the mortgage to your new property. If you’re selling and buying another home, porting your existing mortgage avoids the ERC, provided the lender’s criteria still fit.
Is it worth paying an ERC just to switch from variable to fixed?
It can be, particularly if rates look like they’re going to rise. The ERC on a tracker or discount deal is often lower (sometimes zero) than on a fix, so the switch cost may be modest. Running the break-even against your expected future rate movement is the way to decide.
How much notice does my lender need to action the switch?
Typically a few weeks, but it varies by lender. Starting the process early, especially if your purchase or sale timeline is fixed, avoids last-minute delays.