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What emergencies could justify a highly liquid emergency fund?
This might vary from other answers but I generally prefer to use debt before touching an emergency fund.  But one of the reasons I have an emergency fund is to that I can make sure I can cover any debt payments.  Essentially, this give you leverage.  You might start off with a small emergency such as needing a new refrigerator.  If you pull the cash out of the fund to pay this off immediately, you've depleted your account and if something major comes along, you might be short.  By using debt, you can often cover the costs with cash-flow and leave your risk buffer in place. Often, retailers will offer really sweet financing deals.  0% for 12 months or whatever.  Often, though, if you don't pay it off in time, they can be costly.  I'm not sure if this is legal (in the US) anymore but if it wasn't fully paid off in time, you'd be retroactively charged interest on the whole amount.  But if you have an emergency fund, you pretty much guarantee that won't happen.  The only time it will is if something else happens that requires the emergency fund to be cashed in.  But if things are that dire, the debt is unsecured.  You're credit may suffer but they can't come after your assets. It's not an either-or situation.  You give yourself options by having the cash available.  It allows you to take advantage of opportunities that might be too risky otherwise.  Ultimately what you want to be able to weather the storm in a situation where you have, say, a mortgage on a house that is underwater, the stock market is down, and you have no income.  In that situation, you don't want to liquidate your stock when it's down and you (probably) don't want to lose your home equity in a foreclosure.