The trade-off in one sentence
A shorter term means larger monthly payments but less total interest. A longer term eases the monthly pressure and costs more overall. Everything else is detail.
Start from your budget, not the headline rate
Work out what you can comfortably pay every month, then subtract a buffer of at least ten percent. Borrowing decisions made without a buffer are the ones that become difficult when something unexpected happens.
Model it before you commit
Use the repayment calculator to compare two or three terms side by side. Look at both numbers: the monthly payment and the total repayable. People tend to fixate on the first and get surprised by the second.
Can you overpay later?
Ask whether early settlement is possible and whether it actually reduces the interest you pay. Where interest accrues over time, choosing a longer term and overpaying when you can gives you flexibility without penalty.
A practical rule
Choose the shortest term whose monthly payment you could still meet if your income dropped for a couple of months. That single test prevents most repayment trouble.
Compare products and see your repayment before you commit.