Many mortgages are portable so in theory you can take your existing deal with you when you move. However, it is unlikely that the mortgage on your new house will be exactly the same as that on your existing home. Unless you're downsizing, you'll probably need to borrow an additional amount. This is possible, but it is likely to be at a different rate than you're paying on the existing mortgage so it all gets a bit more complicated. It's therefore simpler if the fixed or introductory term has ended and you're out of the penalty period when you come to move.
Disclaimer: The entire contents of this website are based upon the opinions of Dr. Mercola, unless otherwise noted. Individual articles are based upon the opinions of the respective author, who retains copyright as marked. The information on this website is not intended to replace a one-on-one relationship with a qualified health care professional and is not intended as medical advice. It is intended as a sharing of knowledge and information from the research and experience of Dr. Mercola and his community. Dr. Mercola encourages you to make your own health care decisions based upon your research and in partnership with a qualified health care professional. If you are pregnant, nursing, taking medication, or have a medical condition, consult your health care professional before using products based on this content.