4) You’re going to be seeing a temporary income reduction
This could be you or your partner going on maternity leave, going back to full time education or taking a career break; anything that would mean you have a reduced household income that is temporary. Bear in mind you would still need to be approved for the normal mortgage repayments (before the incentive is applied), so you need to still have your full income when you take out the mortgage.
However, the Own New Rate Reducer can be a useful way to temporarily reduce your household expenses over a two or five year term, meaning you have less to pay when your income is later reduced.