There is a general thumb rule that one should maintain at least three to six months expenses as an emergency fund. However this one thumb rule will not suffice for all. Beniwal suggests that in case one is in a volatile job or business, with no other source of income, one needs to maintain at least 12 months of monthly expenses in the emergency account. In case one has a stable job but has a mortgage or an EMI running which is over 40 per cent of their salary, one should be keeping 9-12 months of monthly expenses as emergency fund and at least six months EMI in emergency expenses. In case one has a fairly stable job and working spouse, the emergency fund should take care of six months of your monthly expenses. In a situation where both spouses are working and there is hardly any debt, an emergency fund that takes care of three months of monthly expenses is enough.