Saving for a big family cost, from a car repair to a school trip, is easier...

https://wiki-saloon.win/index.php/How_do_I_know_if_a_repayment_is_affordable_in_a_bad_month%3F

Saving for a big family cost, from a car repair to a school trip, is easier when it has its own savings pot. Keep emergency money separate, then stress-test your budget with an awkward month to check both pots can survive a surprise bill.