Should I use savings to clear part of my mortgage?

[whomoon]

My mortgage is in 3 parts which I renew every two years for cheapest monthly repayment.
One part is £6,900 at 4.42%, 18 years remaining. Up for renewal at the end of the year.
I have 12k in savings which I am adding to each month.

I don’t know whether to pay the £6.9k off at the end of the fixed term with my savings.

Is it a no-brainer or should I consider some factors?

I used to think clear it all the way. Now I understand that if you can get a better rate in savings the money should be in savings. Yes you pay the mortgage interest each month but the savings earn you a higher sum.

As long as you aren't paying tax on the interest in savings - as long as you stay below the threshold for your tax band or put it in an ISA you should be fine.