A broken boiler or an interruption to pay creates a cost before you planned for it. An accessible reserve can cover some or all of that gap without new borrowing. Like a shock absorber, it has a limit: spending the reserve leaves less protection for the next problem.

Start with what the household can afford. If essentials or required payments are already at risk, seek free debt guidance (opens in a new tab) about priorities and support. Do not leave a bill unfunded merely to reach a savings target.