How much do you need for a rainy day fund

Umbrella for a rainy day
Sometimes the weather folk at the Bureau of Meteorology get it wrong and it rains when you least expect it. You’re caught outside in your thongs without an umbrella and frankly, it’s not fun.

What’s worse than being in the rain sans umbrella? Needing money in an emergency and not having any set aside to cover the cost of an urgent or unexpected expense.

That’s why having some money set aside for unexpected events is advice we give to all clients. This is money that should be readily available in a bank savings account rather than invested.

What is a rainy day fund?

Also known as an emergency fund or a savings buffer, it’s an amount of money you have saved that can cover the costs of a surprise expense or period without an income.

Having some cash set aside means you don’t need to borrow or dip into your longer term investments if you need money quickly. It gives you some breathing space if things go wrong. Murphy’s Law says bad things happen inevitably when you least expect them.

And stuff does go wrong…

Life happens and suddenly you have an unexpected expense you need to deal with immediately. Your car might break down, a sports injury could mean knee surgery or worst case scenario you lose your job or a sudden illness might leave you unable to work or needing to care for a relative.

In any of these scenarios the ability to access cash quickly and easily without dipping into your investment portfolio is a huge relief.

Why shouldn’t I dip into my portfolio. That’s what it’s there for right?

There are a few reasons why you want to avoid borrowing or dipping into investments for emergency cash.

Borrowing is typically very expensive, especially for emergency cash or a personal loan. Interest rates for personal loans start at around 10% (if you’re lucky) and go up from there. Pay-day style loans have been known to charge much higher rates of 50% per year (or more) which will cost you bucket loads in interest and mean you’re spending months or years afterwards paying it off.

Investments are a less expensive way of funding short term expenses but should be avoided for a different reason. If you’re dipping in and out of your investment portfolio, you expose yourself to a higher risk of selling investments during a market ‘dip’ rather than holding for your planned timeframe. Your chance of losing money reduces with every year you hold investments so selling early means there’s a much higher chance you’re selling before you’re making profit.

Probably of loss

If you plan to use your investment portfolio as a pseudo bank account to cover your cost of living you need to ask yourself if investing is right for you. When the market falls you want to be in a position to add to your portfolio, not sell to cover emergency expenses.

Time in the market rather than timing the market is the key to investment success.

Why we insist all clients keep a savings buffer

Investing isn’t right for everyone. Quite often we turn potential clients away because we believe they need more savings, or to pay off high interest debt, before investing is a good option for them.

Keeping a cash buffer is one of our top 5 financial tips as we believe it gives clients the best possible chance of reaching their investment goals.

How to calculate your rainy day buffer

As a rule of thumb, we think your rainy day fund should cover your cost of living for 6 months. This means you can still afford to live and cover short term expenses within dipping into investments.

For example..
If you spend $1,000 per month on rent and $600 on living expenses then your savings buffer would be ($1,000 + $600) x 6 = $9,600. This the minimum amount you should have stashed away in a high interest savings account as a buffer before starting to invest.

If you need to dip into your savings buffer at any point, we encourage clients to replenish it before topping up their investments further.

This may seem cautious but if a fall in the market coincides with when you unexpectedly need money you don’t want to have to dip into your investment portfolio at the worst possible time.

Knowing exactly where the market is tracking compared to the long-term trend is impossible.

Long term trend of Australian shares

This is why it’s vital to have an appropriate investment horizon to be able to ride the trend – through good times in your life, and bad.


Grow your savings the smart way

Stockspot is Australia’s largest and most experienced online investment adviser. We make investing easy and affordable. Whether you’re growing your wealth, saving for a home, a family or retirement, we help you do it with the right investment portfolio and guidance.

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Lauren Franze

Head of Communications and Public Relations