Selling After Remortgaging: Timing and Penalties

Remortgaging is one of the most common financial decisions homeowners make. Whether you locked in a lower rate, released equity, or consolidated debts, the new deal came with a new set of terms — including a fresh early repayment charge (ERC) schedule. If circumstances have changed and you now need to sell, that ERC can come as an unwelcome surprise.

This guide explains exactly what happens when you sell after remortgaging, how to calculate the cost, and what options you have to minimise the financial impact. If you are considering selling a property with an outstanding mortgage, understanding the ERC position is one of the first things you should do.

What are early repayment charges and how do they work?

An early repayment charge is a penalty your mortgage lender imposes if you repay the mortgage — in full or in part — before the end of your deal period. The deal period is the introductory term attached to your fixed-rate, discounted-rate, or tracker mortgage, typically lasting two, three, or five years.

When you remortgage, you enter a brand-new deal with a brand-new ERC schedule. Even if your previous mortgage had no remaining ERC (because you were on the standard variable rate), the new deal starts the clock again from year one. This is the key point many sellers miss: a remortgage resets the penalty entirely.

ERCs are calculated as a percentage of the outstanding mortgage balance at the point of repayment — not the original loan amount. Most lenders use a sliding scale, so the percentage decreases each year of the deal. This means selling in year one costs significantly more than selling in year four or five.

Typical ERC structures after remortgaging

The exact ERC percentages depend on your specific mortgage product, but most follow a predictable pattern. Here is how typical ERC schedules look for common deal lengths:

These are illustrative figures. Some lenders use flat ERC rates throughout the deal (for example, 3% for all five years), while others use more aggressive sliding scales. Your mortgage offer document sets out the exact percentages that apply to your deal.

How to calculate your ERC: worked example

Calculating your ERC is straightforward once you know the percentage and your outstanding balance. Here is a worked example for a seller who remortgaged onto a five-year fix with a £200,000 balance.

ERC cost by year on a £200,000 mortgage (5-year fix)

The balance decreases each year because of regular monthly repayments (assuming a repayment mortgage). The ERC is calculated on the balance at the point of redemption, not the original loan amount. As the table shows, waiting from year one to year three saves over £4,000 in this scenario.

For the exact figure, always request a redemption statement from your lender. This document confirms the outstanding balance, accrued interest, the applicable ERC, and the total amount needed to close the mortgage. Most lenders provide it within five working days.

When do ERCs expire?

Your ERC expires at the end of your deal period — the date your fixed rate, discounted rate, or tracker term ends. After this date, you move onto your lender's standard variable rate (SVR), and there is no ERC to pay. The SVR is typically higher than your deal rate, so most homeowners either remortgage again or sell at this point.

The deal end date is stated in your mortgage offer document. If you cannot find it, check your lender's online portal or call their customer service line. Your solicitor can also confirm the position by requesting a redemption statement during the conveyancing process.

There is an important subtlety here: some mortgage products allow you to begin the sale process before the deal expires and complete after it, thereby avoiding the ERC. Conveyancing typically takes 12 to 16 weeks, so if your deal expires in three to four months, you could list now and aim for a completion date that falls after the ERC window closes.

Strategies to minimise or avoid the ERC

There are several legitimate ways to reduce the financial impact of selling after a remortgage.

1. Wait for the deal period to expire

The most straightforward approach. If your deal ends within a few months, delaying the sale until after expiry saves the entire ERC. You can use the waiting period productively by preparing your legal paperwork, ordering searches, and getting the property ready for viewings. This way, you are ready to move quickly once the ERC drops to zero.

2. Port the mortgage to a new property

If you are selling and buying simultaneously, porting your mortgage means transferring your existing deal to the new property. Because you are not repaying the mortgage, no ERC is triggered. However, porting requires your lender's approval: they will reassess your income, expenditure, and the new property's suitability.

If you need to borrow more for the new property, the additional amount will be on a separate deal at current market rates. If you are downsizing and borrowing less, some lenders treat the reduction as a partial repayment and may charge a proportionate ERC on the difference. Always confirm the porting terms with your lender before committing to a purchase.

3. Negotiate with your lender

While lenders are generally not willing to waive ERCs, there are circumstances where they may agree to reduce the charge. If you are selling due to genuine financial hardship — redundancy, relationship breakdown, serious illness — the Financial Conduct Authority's Treating Customers Fairly principles require lenders to consider your request. Put it in writing, provide supporting evidence, and keep records of all correspondence.

4. Use your annual overpayment allowance

Most fixed-rate mortgages allow overpayments of up to 10% of the outstanding balance per year without triggering an ERC. Making overpayments in the run-up to your sale reduces the balance on which the ERC is calculated. On a £200,000 mortgage, overpaying the full 10% (£20,000) before selling at a 3% ERC saves £600 (£5,400 instead of £6,000).

5. Time your completion date strategically

ERCs typically change on the anniversary of your deal start date. If you are close to the next anniversary, delaying completion by even a few weeks could move you into a lower ERC band. For instance, completing one month after your second anniversary instead of one month before could drop the ERC from 4% to 3% on a five-year fix — a saving of £2,000 on a £200,000 balance.

Mortgage porting explained

Porting is one of the most effective ways to avoid an ERC when selling after a remortgage. Here is how it works in practice:

1. You apply to transfer your existing deal. When you find a new property, you apply to your lender to port the mortgage. This is essentially a new mortgage application assessed against current lending criteria.
2. The lender reassesses affordability. Even though you already have the mortgage, your lender will check your current income, outgoings, and credit status. If your circumstances have changed since you remortgaged (for example, a change in employment or additional debts), the application may not be approved.
3. The new property is valued. The lender will value the new property to ensure it provides adequate security for the loan. If the valuation falls short, you may need to increase your deposit or reduce the loan amount.
4. Additional borrowing is on a new deal. If the new property costs more and you need to borrow extra, the additional amount will be on a separate deal at current market rates. You will effectively have two mortgage products running simultaneously.
5. Timing must align. The sale of your current property and the purchase of the new one must complete on the same day or within a window specified by your lender (often 30 days). If the dates do not align, the port may fail and you could face the ERC after all.

Not all mortgage products are portable. Check your mortgage offer document or contact your lender directly to confirm whether porting is available on your deal.

What happens to your mortgage when you sell

When you sell your property, the mortgage must be repaid in full. This process is called mortgage redemption. Here is how it works step by step:

1. Your solicitor requests a redemption statement from your lender, confirming the total amount needed to close the mortgage.
2. The redemption figure includes the outstanding balance, accrued daily interest up to the expected completion date, any ERC, and the mortgage exit fee.
3. On completion day, the buyer's solicitor transfers the sale proceeds to your solicitor.
4. Your solicitor uses the proceeds to pay off the mortgage (including the ERC), the estate agent, their own fees, and any other agreed costs.
5. The remaining balance — your net proceeds — is transferred to your bank account, usually on the same day.
6. Once the mortgage is repaid, the lender releases the legal charge on your property title at HM Land Registry.

Redemption statements are valid for a limited period, typically 14 to 30 days, because interest accrues daily. If your completion date slips, your solicitor may need to request an updated statement.

Full costs of selling during a remortgage deal

The ERC is the largest additional cost, but it is not the only one. Here is a full breakdown of the mortgage-related costs you may face when selling during a deal period:

These costs are all deducted from your sale proceeds on completion day. They appear as line items on your completion statement, which your solicitor prepares before completion. Review this document carefully to ensure the figures match the redemption statement your lender provided.

When selling despite the ERC makes financial sense

Paying the ERC is not always the wrong decision. In some circumstances, the cost of waiting outweighs the penalty:

• Relocating for work. If you are moving for a new job and would need to rent while maintaining mortgage payments on the unsold property, the combined cost could exceed the ERC within a few months. Running two properties simultaneously is expensive.
• Relationship breakdown. When a sale is needed to divide assets, waiting for the ERC to expire may not be practical or desirable. The emotional and financial cost of delay can be significant.
• Falling property prices. If values in your area are declining, the loss from a lower sale price in six or twelve months could easily exceed the ERC you would save by waiting.
• You have found your next home. In a competitive market, losing an ideal property because you are waiting for an ERC to expire can be a false economy. Compare the ERC cost against the risk and cost of finding an equivalent property later.
• The ERC is small. If you are in the final year of a five-year fix and the ERC is just 1%, the cost on a £200,000 mortgage is £2,000 — a meaningful but manageable sum that may be worth paying for the flexibility to sell now.

The key is to calculate the actual numbers for your situation. Add up the ERC, ongoing mortgage payments, any rent you would need to pay, and potential changes in property value. A mortgage adviser can help you model different scenarios.

What to tell your solicitor and estate agent

When you instruct your solicitor and estate agent, be upfront about your mortgage position. Specifically:

• Tell your solicitor about the ERC. They need to know the redemption figure to prepare an accurate completion statement and ensure there are sufficient funds from the sale to cover all costs. Your solicitor will request the formal redemption statement from your lender as part of the conveyancing process.
• Tell your estate agent about your minimum figure. If the ERC means you need a certain sale price to break even or fund your onward purchase, your agent should know this so they can advise on pricing strategy and negotiate accordingly.
• Discuss timing constraints. If you are trying to align completion with the end of your deal period, both your solicitor and agent need to understand the timeline. Your solicitor can try to negotiate a completion date that falls after the ERC expires, potentially saving you thousands.
• Ask about porting early. If you are buying another property and plan to port the mortgage, your solicitor and mortgage adviser need to coordinate the sale and purchase to ensure the porting window is met.

Common scenarios: remortgaging then needing to sell

Life does not always go to plan. Here are the most common reasons sellers find themselves needing to sell shortly after remortgaging, and the typical approach for each:

• Job relocation. If your employer is covering relocation costs, check whether they will contribute towards the ERC. Some relocation packages include mortgage penalty reimbursement. If not, factor the ERC into your negotiations with the employer.
• Separation or divorce. In a financial settlement, the ERC is a legitimate cost of the sale and is typically deducted before the equity is divided. If the court orders a sale, the ERC is treated as a necessary expense.
• Financial difficulties. If you can no longer afford the mortgage, contact your lender before defaulting. They may offer forbearance options, and in some cases may reduce the ERC under their hardship policies.
• Inheritance or windfall. If you have inherited a property and want to sell your current home, consider whether porting or letting (with lender consent) is a more cost-effective option than paying the ERC.
• Upsizing or downsizing. If your family circumstances have changed, porting the mortgage to a larger or smaller property is often the most cost-effective route. For downsizing, check whether the lender will charge an ERC on any overpayment above the portable amount.

Preparing to sell: practical steps

If you have decided to sell despite the ERC, or you are timing your sale for when the deal expires, follow these steps:

1. Request a redemption statement. Know the exact cost before you make any decisions. Contact your lender and ask for a formal redemption figure.
2. Calculate your net proceeds. Subtract the ERC, mortgage balance, exit fee, estate agent fees, and solicitor costs from the expected sale price. Ensure the numbers work for your onward plans.
3. Check your deal end date. If expiry is within three to four months, consider starting the sale process now and aiming for a completion date after the ERC drops.
4. Explore porting. If you are buying another property, ask your lender whether your deal is portable and what conditions apply.
5. Prepare your legal forms early. Completing the TA6 property information form, ordering an EPC, and gathering your documents can all be done before you list. This reduces the time between listing and exchange.
6. Instruct a solicitor. Getting your conveyancing underway early means you are ready to move quickly once the ERC position is resolved.

How Pine helps sellers get ahead of the process

If you are waiting for your deal period to expire, that waiting time does not need to be wasted. Pine helps sellers complete their legal paperwork — including the TA6 and TA10 property information forms — with AI guidance, and order property searches at near-trade prices, all before a buyer is found. By the time your ERC window closes and you are ready to list, the legal groundwork is already done, which means fewer delays during conveyancing and a faster route to completion. Check your sale readiness to get started.

Sources

• Financial Conduct Authority — Mortgages and Home Finance: Conduct of Business Sourcebook (MCOB), fca.org.uk
• UK Finance — Regulated mortgage lending statistics, ukfinance.org.uk
• MoneyHelper — Moving home with a mortgage, moneyhelper.org.uk
• MoneyHelper — Early repayment charges explained, moneyhelper.org.uk
• Financial Ombudsman Service — Complaints about mortgages, financial-ombudsman.org.uk
• HM Land Registry — Practice guide 31: discharge of charges, gov.uk
• Law Society — Conveyancing Protocol, 2019 edition

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