Offer your thoughts or opinion on the input financial query or topic using your financial background.

What emergencies could justify a highly liquid emergency fund?
First of all, a person that relies on their ability to tap a line of credit to cover an emergency isn't generally the kind of person that has investments they can cash out to cover the debt. That being said, my personal reasons for having a liquid emergency fund revolve around bank errors and identify theft. I used to work for a company that made bank software. Errors are a common occurrence. You'd be surprised how many transactions are still input by human hands despite our computerized world. All it takes is one typo to wipe out your ability to swipe plastic for a few days. This has actually happened to me. My utility company sent me a bill for $240 and wound up taking $2400 by accident, overdrawing my account and sending me into a fee spiral. They fixed their mistake... several days later. The snowball of fees from other transactions that bounced took another two months to correct. In the meantime, I also had my mortgage payment due. In the US, you can't pay your mortgage with credit, and for those who rent, many landlords won't let you pay with credit either. I have also seen this scenario play out twice with other people I've known who've had their ID stolen. Yes, the bank will cover the fraud after a lengthy process. But the disruption causes fees and overdrafts to quickly snowball out of control. I have a separate savings account at a different bank for this kind of thing, and I have a few hundred dollars cash in my house at all times. Having a liquid emergency fund allows you to quickly stabilize the situation and gives you walking around money for those times where the banking system becomes your enemy for a time.