Understanding a mortgage offer line by line
Here is a straightforward look at this topic for Crazish.
A mortgage offer compresses a huge decision into a few numbers. The ones that matter are the interest rate and how long it is fixed, the total you will repay over the full term, the monthly payment when the fixed period ends, and the fees for leaving early. The headline rate alone says very little about which offer is cheaper.
Compare offers on the total cost over the fixed period including arrangement fees, then ask what the payment would be if rates rose by two percentage points. If that number would stretch your budget, consider a longer fix or a smaller loan. A broker can explain the wording, but the decision about how much risk to carry is yours alone.