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Safety Net Funds: Why Traditional Advice Is Wrong

Don’t keep your safety net funds in cash savings accounts that give you little to no interest. Odds are you’ll lose money due to inflation, as well as lose out on the potential growth of your hard-earned savings.

Articles by Dan Egan

By Dan Egan
Managing Director of Behavioral Finance & Investing, Betterment  |  Published: July 11, 2019

A safety net is one of the first goals any investor should establish and fund.

Investing your emergency funds helps you save and grow your money at the same time.

We recommend that everyone should save regularly towards some kind of safety net based on their monthly expenses.

Conventional wisdom says that safety net funds should be held in a savings account or a similarly risk-free type of account. But is this really the wisest way to manage your rainy day fund? Our analysis finds that you can do better by investing your safety net funds in a diversified portfolio.

The Risk Of Holding Cash

First, let’s get one myth out of the way. Cash savings accounts are not risk-free. Why? After accounting for inflation, you may not get the money you put in back—in real terms.

Cash savings accounts are not risk-free.

Today, with nominal cash interest rates hovering around 2%, money in a traditional savings account could actually earn nothing, or even make a negative real return over the next few years. This means your safety net fund will need to be topped up year after year in order to maintain its real value. It also means that you’ll have a significant amount of wealth that is not growing. This could even be the case for a long period of time if you find that you aren’t needing to dip into it.

Invest Your Safety Money Intelligently

The better solution is to have a safety net fund and grow it, too. Our default advice for a safety net goal suggests a 15% stock allocation. While this flies in the face of traditional advice, our analysis below shows that it stands up to critical examination.

Example

For a worker earning around $110,000 in annual salary, a safety net target might be $18,000—assuming minimum expenses of $4,500 per month for four months. This saver has two options: put this money into a savings account or invest it. We think investing is the smarter choice.

However, to be smart investors, we want to also help protect ourselves against potential losses. This is why we recommend adding a buffer of 15% to your original target amount.

For example, to maintain an $18,000 safety net, we recommend starting with $20,700.

Once You Reach Your Target

The benefit of investing a slightly larger amount than you need is the opportunity to help earn more returns. Your safety net might get bigger than necessary on a regular basis once you’ve reached your target amount.

Because of that, we advise transferring any excess to another goal when it gets to be about 20% bigger than the target amount. That excess growth can be transferred to help other goals, like retirement or a vacation.

Experience The Upside

We do not have a crystal ball and we’ll never know exactly what the stock market will do in the future. But, what we can see in recent history is that the downside of taking some risk is not terrible—while the upside can be very powerful.

Get smarter advice

Have questions about your safety net, financial goals, or the amount of risk you should be taking on? Speak with a CFP® professional to review your current financial situation.

Contributing Authors

Fred Egler, CFP®
Financial Planner, Betterment

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Safety Net Funds: Why Traditional Advice Is Wrong

Safety Net Funds: Why Traditional Advice Is Wrong

Don’t keep your safety net funds in cash savings accounts that give you little to no interest. Odds are you’ll lose money due to inflation, as well as lose out on the potential growth of your hard-earned savings.

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