Five days before Christmas last year, the downstairs of my house flooded with groundwater. While the experience wasn’t fun, we were fortunate in that it wasn’t a budget disaster.

Many of our neighbors asked us how we were able to handle the $2,300 in costs that came with damages associated with the flood.

The answer: our emergency fund.

What Is an Emergency Fund?

One of the central tenets of good financial planning is preparing for the future, whatever it may bring. An essential component of a solid financial plan is an emergency fund.

An emergency fund is designed to cover a financial shortfall when an unexpected expense crops up. Your emergency fund can serve as a place to get the money you need when you find yourself facing a large expense you weren’t expecting. Because your emergency fund must be reliable, it needs to hold guaranteed investments. In other words, savings accounts are good for emergency funds, while stocks are bad.

An emergency fund, by nature, also needs to hold liquid or otherwise accessible investments. Ideally, you won’t need to use the money in your emergency fund, and you’ll maintain it for the long-term. However, this can create an interesting conundrum: a long-term account holding short-term, low-interest-bearing investments.

To get around this issue and enhance my return on investment, I like to divide emergency funds into two main categories:

A short-term emergency fund is your go-to place when you have an immediate emergency. It should be in an accessible account, which will probably bear little interest – unless it’s a CIT Bank Savings Builder account, which earns up to 2.20%. The most important consideration is accessibility. You’ll want a debit card attached to this account and check-writing privileges as well. The purpose of your short-term emergency fund is for smaller emergencies, such as car repairs or replacing a major appliance that breaks. It can also be used as a bridge to get you through the few days until you can access your long-term emergency funds in case of a more extreme situation. A long-term emergency fund allows you to save for large-scale emergencies, such as job loss or a major natural disaster like an earthquake or fire, and earn a slightly higher level of interest. Accessibility is still important here, but it’s OK to choose investments that take a few days to liquidate – as long as you have a short-term emergency fund to cover you in the interim.

When you have an emergency fund, you have peace of mind. Your money is on guard, so to speak, just waiting to be called into action. You don’t have to scramble to come up with the money you need, and you don’t have to turn to credit cards. Even if your emergency fund isn’t big enough to handle everything, it can still help reduce the amount of money you must look for from friends and family or credit cards.

What Makes for an Emergency?

It’s important to realize that an emergency fund isn’t a slush fund for large entertainment and leisure purposes. A new big-screen TV doesn’t qualify as an emergency, even if your old TV breaks down.

In order to ensure your emergency fund is there when you need it, you need to be able to identify a true emergency. A true emergency is a situation that requires some sort of immediate action and that can affect your long-term well-being or impact the viability of an important asset, such as your home.

Some situations that constitute true emergencies might include:

A Large Deductible or Copay on a Health Emergency . However, you can save money on taxes related to health care expenses and put less strain on your emergency fund if you consider using an HSA from Lively with a high-deductible health plan.

. However, you can save money on taxes related to health care expenses and put less strain on your emergency fund if you consider using an HSA from with a high-deductible health plan. Emergency Travel . This might include travel necessitated by a family emergency, such as a death in the family.

. This might include travel necessitated by a family emergency, such as a death in the family. Major Unexpected Car Repairs . This can include paying your deductible for damages caused by a car accident or replacing a busted engine. Routine car maintenance, however, should be scheduled into your monthly budget. You can even follow these DIY car maintenance tips and save money.

. This can include paying your deductible for damages caused by a car accident or replacing a busted engine. Routine car maintenance, however, should be scheduled into your monthly budget. You can even follow these DIY car maintenance tips and save money. The Failure of a Major Appliance . If your furnace or fridge suddenly stop working, you may need to pay for a replacement quickly.

. If your furnace or fridge suddenly stop working, you may need to pay for a replacement quickly. Large and Unexpected Home Repairs or Deductibles. If a tree branch falls on your home, you’ll have at least a deductible to pay as part of your homeowners insurance, and further problems could arise. It’s vital to address home repairs like these immediately since your home is often your biggest asset.

How Big Should Your Emergency Fund Be?

Prior to the financial crisis of 2008, personal finance experts recommended that your emergency fund contain three months’ worth of expenses. Now, the new financial wisdom is to have at least six months’ worth of expenses saved up.

Of course, building an emergency fund can be difficult during a tough economy. If you’re trying to get out of debt, one approach is to first build up a $1,000 emergency fund and then redirect your efforts toward eliminating your debt. Once you’re debt-free, you can continue to build your emergency fund further.

To figure exact dollar amounts, you need to determine what constitutes six months’ worth of expenses for you. Simply add up what you spend each month per your household budget and multiply by six. Or you can review the past six months of expenditures if you’ve been using personal finance software, such as Personal Capital or Mint, or a debit or credit card that tracks expenses.

Make sure you include what you pay for your mortgage, utilities, car loans, insurance, groceries, and other essential expenditures. I like to include entertainment items and incidentals that crop up during the month as well. Also, account for bills or other expenses that only come due once or a few times per year. For example, I pay my auto insurance quarterly and get four new tires on my car once every year.

The amount of money you put in each of your short- and long-term emergency funds will depend on what you can afford and what you’re comfortable with. For my needs, I keep about $2,000 in my short-term fund, while I aim to build up six months’ worth of expenses in my long-term fund.

Essential Emergency Fund Features

As pointed out earlier, emergency fund investments need to be guaranteed or at least very low-risk. They also must be liquid and accessible. Look for these crucial features when setting up your emergency fund.

1. Low/No Risk

Unfortunately, investments often realize a rate of return that’s directly proportional to how much risk they carry. That’s why you’ll need to be satisfied with low-interest-bearing accounts in your emergency fund.

Checking, savings, and money market accounts, as well as bank CDs and even physical cash, are good choices. Opening a Savings Builder account from CIT Bank is probably the best option. Since it earns up to 2.20%, you’ll receive one of the highest rates for a low-risk account.

Just make sure your bank accounts or bank-guaranteed investments carry FDIC insurance. Treasury bills, notes, and bonds have traditionally been good choices for safe investments. However, since the guarantee attached to government-issued instruments has come into question, these may be treated as low-risk investment options but not necessarily guaranteed ones.

The same holds true for other highly rated bonds and bond funds. Such investments may constitute a portion of your long-term emergency fund, depending on how comfortable you are taking on risk.

2. Liquidity

Liquidity represents how quickly your assets can be converted to usable cash. A savings account, for example, is 100% liquid because the funds are already in cash. Bonds, however, must be sold before you can use them, and you must wait for the cash settlement period – one day for government-issued securities, three days for all others – to pass.

In some cases, cash products can also be problematic. CDs, for example, come with penalties if you withdraw money early. Understand the penalties of CDs you’re considering or already own, since they can and do differ. Like bonds, CDs should constitute a portion of your long-term emergency fund.

3. Accessibility

A couple of years ago, I needed immediate access to my cash, but it was in an online savings account and took three days to get. That wasn’t soon enough. Luckily, my parents had enough money in their emergency fund to tide me over until I could access my emergency fund.

This experience is one reason I decided to create a short-term and a long-term emergency fund. I can access my short-term account immediately. And for bigger expenses, the short-term account has enough to hold me over while I wait for my long-term funds to come through.

In addition to keeping cash on hand, make sure you have a debit card and ideally check-writing privileges attached to your short-term emergency fund. That way, you can access money at any time in virtually any place.

Allocating Money to Short- and Long-Term Emergency Funds

Any investment you can’t access immediately – via a debit card, writing a check, or pulling money out of a safe – goes into your long-term emergency fund. I like to keep my larger, long-term emergency fund in a high-yield online savings account in order to get a slightly higher rate of return.

One strategy I use is to put a portion of my long-term fund in high-quality bonds. By doing so, I can achieve a better rate of return with minimal risk and can liquidate into cash within a few days should I run into a large emergency. I keep my smaller, short-term emergency fund at a local bank. The yield isn’t as high there, but I can access my money immediately.

Some people also create a CD ladder in their long-term fund. You can create a CD ladder by purchasing multiple CDs such that one expires every month, every three months, or at any other interval of your choosing. This way, you know when the money will become available, and you only lose the interest on one CD – as opposed to all of them – should you need to access the money. Moreover, a CD ladder allows you to access the higher yields that only accompany long-term CDs. However, a CD ladder should only make up a portion of your long-term emergency fund so you can avoid any penalties associated with premature access.

Finally, consider using a credit card for an emergency if you can’t access your emergency fund in time. However, do so only if you can use credit cards wisely by paying off the full balance before the due date.

Building Your Emergency Fund

One of the most discouraging aspects of building an emergency fund is the large amount of money you must contribute. For some people, a $5,000 emergency fund seems out of reach. The good news is that you don’t have to fund your emergency account all at once. You can build it up a little at a time. The most important thing is to get started and remain consistent so that over time, you can reach your emergency fund goal.

Here are some tips for effectively building your emergency fund.

Break It Down . Decide how much you want in your emergency fund and figure out how much you can put in each month. Then, determine how long it will take to reach your target based on your monthly contribution. Breaking it down this way can make saving for your emergency fund and other goals more manageable.

. Decide how much you want in your emergency fund and figure out how much you can put in each month. Then, determine how long it will take to reach your target based on your monthly contribution. Breaking it down this way can make saving for your emergency fund and other goals more manageable. Use “Wasted” Money . Some estimates indicate that each household wastes at least 10% of its income each month. Look for the money leaks in your budget, such as over-ordering at restaurants or leaving the lights on when you’re not in a room. Plug these leaks, and then use that money to build up your emergency fund.

. Some estimates indicate that each household wastes at least 10% of its income each month. Look for the money leaks in your budget, such as over-ordering at restaurants or leaving the lights on when you’re not in a room. Plug these leaks, and then use that money to build up your emergency fund. Make It Automatic . Schedule regular transfers from your checking account to your emergency fund using automatic savings tools. You might also be able to have a portion of your paycheck diverted to your emergency fund. This way, you don’t have to remember to do it yourself every month.

. Schedule regular transfers from your checking account to your emergency fund using automatic savings tools. You might also be able to have a portion of your paycheck diverted to your emergency fund. This way, you don’t have to remember to do it yourself every month. Pad Your Fund With Dividend Earnings . Dividend stocks aren’t just for income investing You can also use them to pad your emergency fund. Build a portfolio that includes dividend stocks, and deposit those dividends in your emergency fund. It isn’t the fastest way to fund your emergency account, though, so make sure you’re doing other things as well.

. Dividend stocks aren’t just for income investing You can also use them to pad your emergency fund. Build a portfolio that includes dividend stocks, and deposit those dividends in your emergency fund. It isn’t the fastest way to fund your emergency account, though, so make sure you’re doing other things as well. Use Spare Change . Have your entire family empty the change from their pockets, perhaps including their one- and five-dollar bills, into a jar at the end of each day. At the end of each month, take the money in the jar and add it to your emergency fund. Again, use this technique to supplement or boost your emergency fund, but don’t depend on it entirely to get you to your goal.

. Have your entire family empty the change from their pockets, perhaps including their one- and five-dollar bills, into a jar at the end of each day. At the end of each month, take the money in the jar and add it to your emergency fund. Again, use this technique to supplement or boost your emergency fund, but don’t depend on it entirely to get you to your goal. Celebrate Milestones. Obviously, you don’t want to splurge big, but when you reach a milestone, reward yourself with a small treat, such as a night at the movies or a new book. Keep track of your goals and mark special achievements. Even cooking a fun celebratory dinner at home can be a good way to reward and motivate yourself to keep going.

Pro Tip: Another way to save spare change is through Acorns. It rounds up every purchase you make and invests the difference. The money is liquid and can be accessed when needed.

Final Word

An emergency fund can mean the difference between financial failure and financial success. It will prepare you for unexpected setbacks and reduce your dependence on borrowing money, most likely at high interest rates.

Carefully examine your expenses and use that information to develop an emergency fund goal, see how much you can save each month, and identify unnecessary expenses or wasted money. Make a plan to build up an emergency fund and decide how you want to allocate it. Finally, use your emergency money wisely by knowing what constitutes a true emergency.

Do you have an emergency fund? What strategies did you use to build it up? What circumstances have forced you to access the funds in the account?