Emergency Fund Calculator: Target and Time-to-Goal

The emergency fund calculator multiplies your monthly essential expenses by your chosen months of cover (3, 6, 9 or 12) to set the target.

It then models how long it will take to reach the target with monthly contributions and savings interest, returning a date you can plan against.

A Personal Savings Allowance check warns you when expected annual interest crosses the £500 higher-rate allowance, which is the size where a Cash ISA usually beats easy-access savings.

For most UK households a 6-month fund is the sensible default; 3 months only works if you have stable salaried income and a partner with their own buffer.