@LottaOtta
yes, as @cloudyskye says, you need to also understand 'ERC' & porting.
ERC (Early Repayment Charge) is when you pay back your mortgage early (which you might need to do if you want to sell or move to a different 'deal'. It can be very expensive. Your mortgage 'deal' will set it out clearly, usually in percentages. Decreasing each year.
'porting' is keeping your existing deal on the balance outstanding on your mortgage on a 'new' (to you) house when you move BUT although the 'deal' is guaranteed, you still have to reapply for your entire mortgage. The extra you're likely to need will be at whatever the rate is when you do it.
I usually fix for 2 years so I'm not caught up in the ERC BUT this time (Sep 22) I've fixed for 5 because of the rising rates & I wanted to know my mtge wasn't going to increase for 5 years.
each person & their situation is really very different, so you do really need to find out what Halifax offers & the relevant charges & restrictions before signing up to it.
Another thing that's confuses some people is that your Lender IS lending you the money for the length of the mortgage. It's not really 'remortgaging' at the end of your 'fix' it's just renegotiating the terms of the loan (mortgage). At worst it'll go onto the SVR.
You need to find out what the NO PENALTY over payment limit is per year. I think most lenders its 10% if the original mortgage amount, but you need to check specifically on the 'deal' you're being offered.
If you're paying the mortgage broker, then they will encourage you into a 2yr mortgage fix, then there's another fee in 2yrs.
Ask us anything you're confused about. There IS a lot of information online, but it can still all be very confusing.
make yourself a list of things to check in the mortgage offer!