My fixed rate ends before my house sells. What now?

This is one of the most common timing problems in a house sale, and it catches people out because the two clocks have nothing to do with each other. Your mortgage deal ends on a date set two or five years ago. Your sale finishes when a chain of strangers is ready. They were never going to line up neatly.

The numbers explain why it matters. A standard variable rate, or SVR, is the default rate your lender moves you onto when a fixed or tracker deal ends. The average UK SVR was 7.13% in spring 2026, according to Moneyfacts data reported by the HomeOwners Alliance. The average two year fixed rate was 5.09% on 17 August 2026, per Rightmove. On a £200,000 mortgage that gap is worth hundreds of pounds a month.

How long is my sale realistically going to take?

Work with real timings rather than hope. Rightmove reported an average of 63 days to find a buyer in its July 2026 index. The HomeOwners Alliance puts conveyancing at roughly 12 to 16 weeks from accepted offer to completion on a freehold, and 16 to 20 weeks on a leasehold.

So a home that goes on the market today and finds a buyer at average speed is realistically completing five to seven months from now. If your fixed rate ends in three months, you are almost certainly going to need something in between. Plan for that rather than betting against it.

What are my options when the deal ends mid-sale?

An early repayment charge, or ERC, is a fee your lender charges if you pay off or leave a deal before it ends. It is typically a percentage of the balance and it is the single most important thing to check before you sign anything while a sale is live. SVRs do not usually carry one. Fixed deals usually do.

What should I actually do, step by step?

1. 1. Find your exact end date and your ERC

   Check your mortgage offer or log into your lender's portal for the date your current rate ends and what leaving early would cost. Everything else follows from these two numbers.

2. 2. Ask your lender what you can switch to and how early

   Most lenders let you reserve a new deal up to six months ahead and let you change your mind before it starts. Ask specifically for deals with no early repayment charge and confirm whether they are portable.

3. 3. Get a realistic completion date from your solicitor or agent

   If you have a buyer, ask where the searches, the mortgage application and the enquiries have actually got to. If you have not found a buyer yet, use the market averages above rather than the date you are hoping for.

4. 4. Compare the real cost of each route over your likely timeline

   Multiply the monthly difference by the number of months you expect to need, then add any product fee and any early repayment charge. Cheapest headline rate and cheapest total cost are often different answers.

5. 5. Speak to a broker or to MoneyHelper before you commit

   MoneyHelper is the government backed service offering free, impartial money guidance. A broker can tell you which lenders are flexible about porting, which matters if you are buying onward.

6. 6. Tell your solicitor the date your new deal starts

   Your redemption figure at completion depends on which product you are on, and a late change can hold up the final statement.

Should I drop my asking price to complete before my rate ends?

Compare the two figures before you decide, because they are usually not close. The gap between an SVR and a competitive fix on a typical mortgage runs to a few hundred pounds a month. A price reduction to force a quick sale usually runs to thousands.

Paying a higher rate for three or four months is normally the cheaper mistake. That does not mean ignoring the date. It means the mortgage question gets solved with a mortgage decision, and the price question gets solved on its own evidence.

Your rate is a monthly problem. Your asking price is a permanent one. Do not fix the small number by damaging the large one.

What is normal here, and what is a genuine red flag?

• Normal: your deal ends before you complete. It happens to a large share of sellers because sale timelines are longer than most people expect.
• Normal: your lender offering you a new rate several months early, and letting you switch again before it starts.
• Normal: a few months on a higher rate while a chain sorts itself out.
• Red flag: signing a five year fix with a substantial early repayment charge when you expect to complete within the year, without first confirming it can be ported.
• Red flag: a buyer using your deadline as leverage to renegotiate. Your mortgage timing is not their business and does not change what your home is worth.

That last point is the one worth guarding. If your agent knows you are under time pressure, assume a buyer may come to know it too. Keep the reason for any deadline to yourself.

How do I stay in control of this?

Put the date your rate ends in your calendar with a reminder six months before it, treat that reminder as the moment to start comparing, and keep the mortgage decision separate from the sale decision. The deadline only becomes pressure if you leave it until the month it arrives.

ValuQ gives UK homeowners free, side-by-side property valuations from competing local estate agents, so the price you list at is a decision you make on evidence rather than under a clock.