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Remortgage advice: what you should know and the questions to ask when mortgaging

7 min read
Oct '25 • by Amy Bulger

Quick summary

Remortgaging can save you money if you’re nearing the end of a fixed deal or want a better rate, but watch out for exit fees and early repayment charges that can cost thousands. It’s best to start about six months before your deal ends and ensure you have enough equity—ideally over 75%—and good credit. Avoid remortgaging if you’re in negative equity or on a low rate, as costs may outweigh benefits.

Remortgaging is where you switch the mortgage on your current home to another lender or to a different mortgage rate. It basically means replacing your current mortgage with a new one. So, if you’re happy in your current home but want to move to a new mortgage deal, then remortgaging is something you should consider.

Is remortgaging right for you?

There are many different reasons why you might decide to remortgage and when is the best time. Here is a list of the most common reasons:

  • You want to take advantage of low interest rates. If interest rates are particularly low, then there could be an opportunity for you to save money by remortgaging. Be careful. If your mortgage isn’t coming towards the end of its term, you might have to pay an exit fee.

  • You want to move from interest-only to a repayment deal. You’ve decided you want to pay more than just the interest on your mortgage and switch to a repayment plan, whereby you’re also chipping away at your mortgage debt with every monthly payment.

  • Your fixed deal is up for renewal. You might’ve taken out a fixed rate mortgage, where you make the same repayments every month and the interest rate stays the same. This would be a great time to remortgage and start shopping around for a better mortgage deal, instead of defaulting to an SVR.

  • You want to make overpayments. Your personal situation might have changed over time, so you are now able to spend a bit more on your mortgage payments. If your current lender doesn’t allow this, you might want to look at changing over to a new mortgage with a lender who will.

  • You’d like to borrow more money. You might want to remortgage and release some cash that you’ve built up in your home to fund an extension or a renovation project. In many cases, remortgaging can be a cost-effective way to borrow the additional money you need.

If you're looking to fund an extension or borrow for a large-scale renovation, you can use our loan calculator to explore your options.

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