Emergency Fund Before You Invest a Single Pound: How Much Cash a UK Man Needs in Reserve First Before you fund a Stocks & Shares ISA, work out your real emergency number - how many months of essential costs to hold back, and whether easy-access savings, Premium Bonds, or a Cash ISA is the right place to park it.
Emergency Fund Emergency Fund Size: Three Months Is Not Enough for Most Earners The 3-month rule comes from an era when jobs lasted decades and layoffs were rare. For white-collar professionals, 6-12 months of expenses is the real target.