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Psychologie a chování

Investment Mistake of the Month: Investing Without an Emergency Fund

5 min readCompound

Key takeaways

Investing without an emergency fund is like driving without a spare tyre — it usually works out, but when it does not, you find yourself in a particularly unpleasant situation. This mistake is among the most common and simultaneously most costly that Czech investors make. And yet it is entirely preventable.

What is the investment mistake of the month?

Each month we focus on one specific, widespread mistake that costs investors money or nerves — or both. The February mistake sounds simple: investing before you have an emergency fund. The result is a forced sale at the wrong moment — and that is a situation you want to avoid at all costs.

Why is a forced sale so harmful?

Equity markets fluctuate. Drawdowns of 20–30% are not the exception — they are part of the game. A long-term investor neither gains nor loses on drawdowns — as long as they do not sell. The problem arises when your car breaks down, you repair the roof, or you lose your job — and you have no money anywhere except in your investments. At that point you are forced to sell, whether you want to or not. And if the market is in a downturn, a paper loss becomes a real one. This is the mechanism that harms thousands of otherwise sensible investors every year.

The core mistake: Investing 100% of available funds with no reserve for unexpected expenses. Result: the first life complication forces you to sell equities at the worst time.

How large should an emergency fund be?

The most common recommendation is 3–6 months of your regular expenses, held in an easily accessible savings or current account. The exact amount depends on your situation:

A more detailed analysis can be found in the article how much to set aside before you start investing.

The correct sequence: reserve before investments

Financial literacy teaches a clear order: first an emergency fund, then paying off expensive debts, then investing. This order is not accidental — it is protection against forced sales. Only when you have a cushion that absorbs unforeseen expenses can your investments remain investments rather than a substitute bank account in times of need. If you want to set your entire financial foundation correctly, start with the article how to build your first portfolio.

How to start if you do not have a reserve?

Do not wait for the perfect moment. Start building a reserve in parallel — or even better, before you invest. Even putting aside a small amount every month in a separate savings account gradually creates a cushion that protects you. Only once you reach the target amount should you move spare funds into investments in full. This discipline pays off in the long run — not only financially, but psychologically. An investor with a reserve sleeps better and does not sell equities in a panic.

FAQ

Why is a credit card not a substitute for an emergency fund?

A credit card is debt with interest — in a crisis you add the burden of repaying high-interest debt. An emergency fund, by contrast, is your own cushion with no cost. Moreover, your credit limit may not be available in a crisis or may not cover the full expense.

Does it make sense to invest and build an emergency fund at the same time?

Yes, but in moderation. If you have no reserve at all, prioritise it. If you have at least a minimal cushion, a parallel approach is sensible. The key is not to put 100% of free money into investments until you have a reserve covering basic expenses.

Where should an emergency fund be kept?

In an easily accessible place — a savings or current account with immediate availability. An emergency fund must NOT be in equities or bonds — when you need it, the market may be in a downturn. Safety and accessibility are key, not yield.

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