7 mistakes you should avoid Invest 20,000 euros

Investing money should be well thought out - especially if it involves larger amounts such as 20,000 euros and you want to secure your assets. This is precisely when it comes to building up a long-term and stable investment so that you can continue to benefit from it in the coming years and decades.

But how exactly you should do this is not easy to decipher. The financial market is full of trends and supposed experts, but may not be suitable for you and your situation at all. It is therefore advisable to plan for the long term and build up your own financial knowledge to help you increase your savings.

In this article, we want to help you with this - and therefore present 7 typical mistakes to avoid if you want to know how to invest 20000 euros.

Error #1: Invest more than is available

Inexperienced investors in particular make this mistake: Anyone who finally decides to invest their savings also wants to get the most out of it - and then invests more money than would be advisable. The problem here is that amounts that are actually needed for larger one-off payments or regular expenses such as invoices and loan instalments are tied up in the investment.

This poses major risks if unplanned expenses actually arise. Not all investments can be liquidated without problems before the end of the term. This usually involves high costs, so you end up with less money than you did at the beginning. Alternatively, investors may be forced to take out additional loans or sell assets to get the capital they need.

This is why Only invest as much money as you really have available for it - i.e. what you can really do without. Check in as much detail as possible what inputs and outputs you have each month, what additional costs are incurred and whether you have enough cushion to access if necessary.

If you want to know how to invest 20000 euros, but don't have any financial cushion, then you might want to start with a smaller amount. You can still invest more money later. 

Error #2: Speculate without sound expertise

In addition to an overestimated investment amount, the type of investment is also a frequent source of error. Investors often try to achieve the greatest possible returns on their capital in the shortest possible time and rely on short-term investment trends such as cryptocurrencies or speculative equity trading.

Although these generally offer comparatively high and, above all, fast returns, they also involve major investment risks, which are often concealed by supposed experts in blogs or videos. Here, short-lived trends or even fraud meshes are marketed as the great opportunity - all at the expense of investors.

However, even if they are completely legitimate investments, it takes a lot of expertise and an understanding of how exactly such investments work and whether they can actually generate the promised profits. Without this knowledge, investors can quickly lose a lot of money - especially if you suddenly invest larger investment amounts like how to invest 20000 euros.

However, if you still want to bet on the fastest and greatest possible gains, you should take at least enough time in advance to look in detail at the investment of your choice and identify the opportunities and risks that come with it. In this way, you remain on the safe side as far as possible - despite the high investment risk. 

Error #3: Ignore your own risk tolerance

Speaking of risky investments: Many investors underestimate the importance of individual risk tolerance. All too often, you rely on current trends or expert opinions and build your investment portfolio buidling accordingly. Your individual requirements and preferences are often neglected.

However, not every investment works equally well for all investors, on the contrary: The ideal investment portfolio buidling should be based on the individual conditions of investors so that it can also be successful in the long term and deliver the desired results.

This is particularly useful if you want to find out how to invest 20000 euros at once. If you are more sensitive to risk and react more sensitively to frequent price and value fluctuations, it may be difficult for you to give up your money in the long term, especially with a larger amount. Security-oriented investments may then be more suitable for you, even if they come with somewhat lower returns.

As valuable as external tips and opinions can be - in the end, it always depends on whether and how such investment recommendations can be implemented individually. Your own risk tolerance is a decisive factor for this. 

Error #4: Put everything on a map

In the financial world, the motto “not all eggs in one basket” is a common principle when it comes to investing money. The idea behind this is to divide the investment capital into as many or different investments as possible in order to achieve the greatest possible diversification in the portfolio.

If too much of your savings is concentrated in a single investment, the risk of clustering is particularly high. And as soon as this investment does not develop as desired and may even slip into the negative, your invested capital is lost.

Of course, there are also corresponding winning opportunitieson the other hand: If you invest most or even all of your capital in a promising investment and then achieve high returns, your profit is of course all the greater. This is also the reason why investors keep putting their entire investment amount on a card - despite the high risk.

However, it is best to be careful about how to invest 20000 euros as an investment amount. After all, even if the fast and, above all, large gains can be quite tempting, with such a sum, considerable wealth growth awaits you, even with the greatest stability, security and diversification.

You can approach diversification in different ways: For example, you can invest in various asset classes such as securities (e.g. shares or bonds), tangible assets (e.g. real estate, infrastructure or renewable energies) or commodities (e.g. precious metals). Diversification across regions or maturities is also possible in order to diversify your investment capital more widely.

Error #5: Putting too much trust in "fin influencers

So-called "fin influencers", i.e. financial influencers, entice people with seemingly universal investment tips and tricks that they market and disseminate via social media. The market for this has exploded in recent years: As a study by HHL Leipzig, which shows FH St.Pöllen and Paradots, more than half of the active Finfluencers in German-speaking countries have only been active since January 2020.¹

However, special care must be taken here: On the one hand, many of these financial influencers are sponsored by companies to promote their products. However, it is not necessarily taken into account whether or to what extent this product is actually suitable for, for example, how to invest 20000 euros successfully. Here, only the promotion of the product counts, less the added value for the consumer.

On the other hand, such Finfluencers are not always real experts who have the appropriate training or professional experience to provide financial advice. In principle, any private individual can become a financial influencer - and can entail significant investment risks for investors. That’s why Bafin has already issued a consumer protection notice to draw attention to these risks.²

Here, too, it is advisable for investors to inform themselves again independently or with the help of other sources. The more in-depth your knowledge is, the better you will be able to assess yourself and critically check whether the tips provided offer you real added value in your individual situation. This means that your investment will remain successful in the long term and allows you to build up your investment portfolio buidling according to your wishes.

The better you can navigate the financial market, know your own financial situation and keep an eye on your personal investment preferences, the better equipped you are to invest your 20,000 euros successfully. Anyone planning the next step can find further strategies for larger amounts in the guide on how to invest 50000 euros .

Error #6: Forget about inflation

When investing money, many people first look at the nominal return. The number that appears at the end of the statement. However, the real return, i.e. the return after deduction of inflation, is crucial for real asset performance. It is precisely this second level that is often overlooked when making investment decisions.

The inflation phase from 2022 to 2023 has made it clear how big the difference can be: Consumer prices in Germany rose by an annual average of 6.9% in 2022, and by 5.9% in 2023.³ Anyone who left EUR 20,000 in an overnight money account with just over 0% interest during this time lost around EUR 1,380 in real terms within a single year - even if the nominal balance of the account remained unchanged. Meanwhile, inflation is back at an annual average of 2.2% in 2024 and 2025³, but the effect remains: An investment whose return is permanently below the inflation rate destroys purchasing power.

Anyone wishing to invest EUR 20,000 in the long term should therefore take the inflation risk as seriously as the market or price risk. The question is not only “How much return can I expect?”, but also “How much of it remains after inflation?”. In this context, tangible assets such as real estate, infrastructure or renewable energies are considered relatively robust against inflation because their value depends not primarily on interest rates, but on real economic yields.

Error #7: Time the market instead of investing 

Anyone who has a larger sum of 20,000 euros available at once knows the feeling: Is this the “right” time to get started? Is it better to wait until the market is cheaper? This question often leads to one of the most expensive investment decisions: conscious or unconscious market timing. The money stays interest-free in the account because the “right moment” awaits.

A study by the investment company Vanguard over the period 1976 to 2022 shows that an immediate one-off investment performed better in 61.6% to 73.7% of cases than a time-delayed payment in several tranches, depending on the market phase and equity ratio.⁴ The reason is simple: If you hold back capital, you give up the market’s opportunity return; the longer you wait, the more expensive it will be on average.

This does not mean that a staggered payment via savings plan ("cost average effect") is always wrong. It can help because it reduces the risk of having entered just before a price slump. It is only important to be aware of the decision: Those waiting for the supposedly best entry point also engage in market timing. Only with the difference that the capital does not work in the meantime.

Investing 20,000 euros: 5 steps to a successful investment

A long-term successful investment is one that is actively adapted and coordinated with the conditions and needs of individual investors with a clear objective.

Following the 7 tips to avoid, we would now like to share with you the 5 most important steps on how to invest 20000 euros successfully:

1. Define your personal investment objective: What should your investment work for? What goal do you want to achieve with it? The larger and more distant your investment objective, the more important it is to prepare your investment accordingly.
2. Consider your investment horizon: Would you prefer to invest in the short term (1-2 years)? Do you feel comfortable with a medium-term investment period (3-10 years)? Or do you like to plan for the long term and want your money to work over a long period (10+ years)? Many investments have different maturities. Make use of your personal investment horizon to select the right long-term investment for you.
3. Invest in what you understand: Are you familiar with the dynamics of the equity market? Or do you feel more comfortable with tangible assets as an investment?  As abstract as the world of finance may be, it is a good idea to have at least a basic idea of where your money is currently invested and how your return will be generated. This allows you to take a more critical view of various investments and strengthens your confidence in the investment you have chosen for yourself.
4. Be realistic about your risk tolerance: How willing are you to take risks when it comes to your savings? Can you sleep well despite price fluctuations? Or do you want your money to be invested in a way that is as stable as possible? As tempting as quick gains can be, you should be honest about your risk tolerance so that you can stand behind your investment decision in the long term.
5. Choose an investment that suits you: Whether you invest directly in individual shares or broadly in funds, whether you investin bonds or tangible assets: At the end of the day, it is you who must feel comfortable with your investment. So don't rely too much on the opinions and tips of outsiders, but find out yourself which investment is right for you, your conditions, preferences and goals.