Remortgaging is one of the most effective ways to keep your mortgage costs down, yet many homeowners drift along without doing it and pay more than they need to. This guide explains remortgaging in plain English: what it is, how it works, why people do it, and how to avoid the costly trap of doing nothing.
What remortgaging is
Remortgaging means switching your existing mortgage to a new deal, either with a new lender or with your current one. You are not moving home; you are simply replacing the mortgage on the property you already own. People remortgage mainly to get a better interest rate when their current deal ends, but also to release equity, consolidate debt, or change the terms of their borrowing. It is a routine part of managing a mortgage well.
Why people remortgage
The most common reason to remortgage is to avoid your lender's standard variable rate when a fixed or other deal ends, and to secure a better rate instead. Others remortgage to release cash from their home's value, to fund home improvements, to consolidate debts, or to change their mortgage, such as the term or who is named on it. Whatever the reason, remortgaging is about getting your mortgage to work better for you.
What happens if you do nothing
If you do nothing when your current deal ends, your lender automatically moves you onto its standard variable rate, or SVR. In 2026 the average SVR is around 7%, far higher than the best available fixed deals, so slipping onto it can add hundreds of pounds to your monthly payments for exactly the same loan, as our guide to what happens when your fixed rate ends explains. Avoiding the SVR is the single biggest reason to remortgage.
How remortgaging works
Remortgaging works much like getting your original mortgage. You compare deals, apply to a lender, who assesses your income, outgoings, credit and the property, and if approved you are made a mortgage offer. The new mortgage pays off the old one, and you continue with the new deal. With a new lender there is legal work involved, while staying with your current lender, a product transfer, is usually simpler, as our guide to product transfer versus remortgage explains.
When to start
The best time to start remortgaging is several months before your current deal ends, typically three to six months ahead, because the process takes time and mortgage offers are usually valid for around six months. Starting early lets you line up a new deal to begin the moment your old one finishes, avoiding even a single month on the SVR, as our guide to the best time to remortgage explains.
The role of equity and loan-to-value
Your equity, the part of the home you own outright, affects the deals available when you remortgage. As you pay down your mortgage and as your home's value changes, your loan-to-value can fall, which can unlock better rates. If your home has risen in value, remortgaging can move you into a lower loan-to-value band, as our guide to how a higher home value lowers your LTV explains. More equity generally means better options.
Releasing equity
Remortgaging can also let you release equity, borrowing more against your home and taking the difference as cash, for purposes such as home improvements or other needs. This increases your mortgage, so it should be done thoughtfully, but borrowing at mortgage rates can be cheaper than other forms of borrowing, as our guide to remortgaging to release equity explains. It is one of the flexible features that makes remortgaging useful beyond simply getting a better rate.
The costs to weigh
Remortgaging is not always free. There can be an arrangement or product fee on the new deal, possibly a valuation and legal costs, and an early repayment charge if you leave your current deal early, as our guides to the cost of remortgaging and early repayment charges explain. The key is to weigh these costs against the savings, since a better rate often outweighs the fees within a short time.
Remortgaging with a broker
Many people remortgage with the help of a mortgage broker, who can search the whole market, compare deals, and handle much of the process. Your current lender's retention offer is not always the most competitive, so checking the wider market, yourself or through a broker, can save money. Given how much a mortgage costs over its life, getting the right new deal is well worth the effort of comparing properly.
Changing your mortgage term
Remortgaging is also a chance to change your mortgage term. You might shorten it to clear the mortgage sooner and pay less interest overall, if you can afford higher payments, or lengthen it to reduce the monthly cost, accepting more interest over time. Adjusting the term to suit your current circumstances is one of the flexible benefits of remortgaging, letting your mortgage fit your life as it changes.
Adding or removing someone
A remortgage can be used to add or remove a person from the mortgage, for example after moving in together, marriage, or a separation. Removing someone usually requires the lender to be satisfied the remaining borrower can afford the mortgage alone. These changes are a common reason to remortgage at times other than the end of a deal, and they are handled as part of the new mortgage arrangement.
Will you pass the lender's checks?
When you remortgage to a new lender, you go through affordability and credit checks much like a fresh application, so it is worth being prepared. If your income, outgoings or credit have changed since you took out your mortgage, this can affect the deals available. Where a new lender's checks might be harder to pass, a product transfer with your current lender can be a simpler route, as covered in our guide to product transfers.
Normal financial housekeeping
It helps to see remortgaging as normal financial housekeeping rather than a chore to avoid. Reviewing your mortgage as each deal ends, and switching to a competitive rate, is simply good money management that can save a great deal over the years. Homeowners who treat remortgaging as a routine part of owning a home, rather than something to put off, tend to keep their mortgage costs much lower.
The bottom line is that remortgaging puts you in control of your biggest monthly cost. By switching to a competitive deal when your current one ends, rather than slipping onto the standard variable rate, you keep your payments down and your mortgage working for you, which over the years can make a very large difference to what your home costs you overall.
In short
Remortgaging means switching your mortgage to a new deal, usually to get a better rate when your current one ends, but also to release equity, consolidate debt or change your terms. Doing nothing lands you on the expensive standard variable rate, around 7% in 2026, so it pays to act. Start three to six months early, weigh the costs against the savings, and compare the whole market for the best deal.
Where to get help and next steps
Read our guides to when to remortgage, product transfer versus remortgage, and how much remortgaging costs. This is general information, not mortgage or financial advice.