Long-term investing for beginners: a complete step-by-step guide
Long-term investing is not about guessing which share will jump tomorrow or spending your evenings staring at charts. It is about putting part of your savings to work for many years, with a simple plan, low costs and enough patience to leave it alone when markets get nervous. For anyone who is not a professional, it is by far the most accessible way to grow your money.
In this beginner’s guide we explain exactly what long-term investing is, why time works in your favour, what you need to sort out before you start, which products are available to investors in Europe (with their pros and risks), how to take your first steps, how much fees really cost, how gains are taxed and which mistakes to avoid.
What is long-term investing?
A long-term investment is one you hold for several years, usually five or more, with the aim of growing your money faster than inflation. There is no official rule, but as a practical guide:
- Short term (under 2 years): money you will need soon. It belongs in a savings account or a term deposit, not the stock market.
- Medium term (2 to 5 years): goals such as a house deposit or a car. Some risk is acceptable, but only a moderate amount.
- Long term (over 5 years, ideally 10 or more): retirement, financial independence or building wealth for the future. This is where taking more risk in exchange for higher expected returns makes sense.
Three ideas often get mixed up. Saving means setting money aside and keeping it safe. Investing means buying assets that create value over time (companies, debt, property) and accepting that their price will move up and down. Speculating means trying to profit from quick price moves, which is closer to betting than investing. This guide is about the second one.
Why time works in your favour
Compound interest
Compound interest is the main reason starting early makes such a difference. It works like this: your money earns a return, that return is reinvested and, the following year, it earns a return on the previous return. At first the effect is barely noticeable, but over the years it speeds up.
Here is an illustrative example with contributions of €100 a month and different hypothetical annual returns (these are not guaranteed returns, they simply show the effect of time):
| Period | Total contributed | At 2% a year | At 5% a year | At 7% a year |
|---|---|---|---|---|
| 10 years | €12,000 | €13,272 | €15,528 | €17,308 |
| 20 years | €24,000 | €29,480 | €41,103 | €52,093 |
| 30 years | €36,000 | €49,273 | €83,226 | €121,997 |
Look at the 5% column: over 30 years you would have contributed €36,000, but more than half of the final amount would come from accumulated returns. And the gap between starting at 25 and starting at 35 is huge, even with the same monthly amount.
If you want to see the maths behind it step by step, this short Khan Academy lesson explains it clearly:
Inflation, the silent enemy
Leaving money idle in an account that pays nothing also has a cost, even if you never see it on your statement. The European Central Bank aims for inflation of 2% over the medium term. At that rate, €1,000 today will have the purchasing power of roughly €820 in 10 years. At 3%, about €744. Long-term investing is, above all, a way to protect your purchasing power.
Less noise, less stress
In the short term, markets rise and fall on news, rumours and mood. In the long term, asset prices tend to reflect something more solid: company profits and economic growth. Global stock markets have had some very bad years, but over long periods and with a diversified portfolio they have historically tended to recover and grow. That guarantees nothing for the future, but it explains why your time horizon is your best ally.
Before you invest: what you need to have sorted
Investing before your finances are in order is the fastest way to end up selling at the worst possible moment. Before you put a single euro into the market, check these four points:
1. No expensive debt
If you have credit card debt, payday loans or consumer credit with high interest rates, paying them off first is usually your best “investment”. No reasonable investment will consistently earn what a 15% or 20% debt costs you.
2. An emergency fund
This is a cash buffer for the unexpected: a breakdown, time off sick, losing your job. The usual advice is three to six months of fixed expenses in an easy-access savings account. Without it, any setback will force you to sell your investments, possibly when they are down. Tracking your spending first makes this much easier; our selection of the best personal finance apps can help.
3. Clear goals with a date
Investing for retirement in 30 years is very different from investing to buy a home in six. Write down what the money is for, roughly how much you need and when. The time frame decides how much risk you can take.
4. Know your risk profile
Ask yourself honestly: if my investments fell 30% in a year, could I live with it without selling? If the answer is no, you need a more conservative portfolio. Under EU rules (MiFID II), investment firms must assess whether certain products are suitable or appropriate for you before selling them. Take that questionnaire seriously rather than treating it as paperwork.
The three key concepts: return, risk and liquidity
Every investment involves a trade-off between three variables, and none is excellent at all three at once:
- Return: what you expect to earn.
- Risk: the chance of losing money and how much the value can swing along the way.
- Liquidity: how quickly and easily you can get your money back without losing value.
Higher expected returns always come with more risk, less liquidity or both. If someone promises you high returns with no risk and instant access, be wary: that is the textbook description of a scam.
Diversification
Diversifying means not putting all your eggs in one basket. Instead of buying shares in three companies, you can invest in thousands at once through a global index fund spread across countries, sectors and asset types. If one company or country does badly, the impact on your portfolio is small. It is the closest thing to a free lunch in investing: it lowers risk without necessarily lowering expected returns.
Long-term investment products for beginners
These are the most common products available to investors in Europe, roughly from lower to higher risk:
Savings accounts and term deposits
They are not long-term investments in the strict sense, but they are the natural home for your emergency fund. Their risk is very low, and across the EU bank deposits are protected by national deposit guarantee schemes up to €100,000 per depositor per bank. In exchange, returns tend to sit close to or below inflation.
Government and corporate bonds
When you buy bonds, you lend money in exchange for interest. Many European governments sell treasury bills and bonds directly to individuals or through banks and brokers. Bonds are less volatile than shares, although their market price can fall when interest rates rise.
Index funds
They track an index (for example the MSCI World, which groups large companies from developed countries) instead of trying to beat it. For beginners the advantages are clear: huge diversification with little money, very low fees and nothing to watch every day. That is why they form the core of many passive portfolios.
Actively managed funds
A professional manager chooses what to invest in, aiming to beat the market. Some succeed, but most do not manage it consistently once fees are deducted, and those fees are usually much higher than an index fund’s. In the EU, most retail funds are regulated under the UCITS framework, which sets rules on diversification and investor information.
ETFs
Exchange-traded funds trade on the stock market like a share. Many track indices at very low cost and are bought through a broker. They are hugely popular across Europe, although their tax treatment differs from country to country.
Pension products
Most European countries offer retirement savings products with tax advantages, usually in exchange for locking your money in until retirement. There is also the Pan-European Personal Pension Product (PEPP), designed to be portable between EU countries. They can make sense depending on your tax situation, but always compare their fees.
Individual shares
Buying shares in specific companies makes you a part-owner. The potential is high, but so is the risk: a single company can fall sharply or even go bust. For a beginner, it makes sense for them to be at most a small part of the portfolio, never its foundation.
Property
Buying a flat to let is a favourite in many European countries, but it requires a lot of capital, has high purchase costs, little liquidity and concentrates your risk in one asset. More accessible alternatives include listed real estate investment trusts (REITs) and property funds.
Cryptocurrencies
Bitcoin and other cryptocurrencies have become an asset many investors include in their portfolios. But let us be clear: they are highly volatile, can fall more than 50% in a few months and do not generate profits the way a company does. If you decide to include them, prudence suggests keeping them to a small percentage of your wealth, an amount you can afford to see drop without it affecting your life.
How to start investing for the long term, step by step
Step 1: decide how much you can invest each month
Review your income and spending and choose a fixed amount you will not need. Investing €50 or €100 a month consistently is better than putting in a large sum once and then giving up.
Step 2: choose a simple portfolio
You do not need ten products to start. Many long-term investors use a combination of two or three index funds: one for global equities and one for bonds. The split depends on your time frame and risk tolerance. As a general guide (not personalised advice), people with a very long horizon who cope well with falls tend to hold more equities, while those closer to their goal or who get nervous in downturns hold more bonds.
Step 3: choose a regulated provider
Before opening an account with a bank, fund manager or broker, check that it is authorised by the financial regulator in its home country and allowed to operate in yours. The ESMA Investor Corner explains how to check a firm’s regulatory status and links to each national regulator’s warnings about unauthorised firms.
Step 4: automate your contributions
Setting up a regular contribution has two benefits: you no longer have to decide every month, and you buy at different prices, sometimes higher and sometimes lower, which smooths out your average cost. This technique is known as DCA, and we explain it in our guide on how to implement a DCA strategy.
Step 5: keep an eye on costs
Check each product’s total annual charge (in funds it appears as “ongoing charges” or TER), plus custody, purchase and sale fees. The next section shows why this matters so much.
Step 6: review once a year and rebalance
Once a year, check whether the split between equities and bonds has drifted far from what you chose. If it has, bring it back in line. Beyond that, the less you touch your portfolio, the better it usually does.
Step 7: do not touch it when markets fall
There will be bad years, and some very bad ones. Selling in a panic turns a temporary fall into a real loss. If you have done the previous steps properly (emergency fund, long horizon, portfolio that fits your profile), downturns are part of the journey, not a signal to get out.
Fees: the most underestimated cost
A one percentage point difference in fees looks small, but with compound interest it turns into a lot of money. Continuing the example of €100 a month and a hypothetical gross return of 5% a year:
| Period | Annual fee of 0.2% | Annual fee of 1.5% | Difference |
|---|---|---|---|
| 20 years | €40,168 | €34,687 | €5,481 |
| 30 years | €80,215 | €63,541 | €16,674 |
Same contributions, same market, and the expensive product leaves you almost €17,000 worse off after 30 years. Unless an expensive product gives you something you genuinely value, low costs are one of the few things you can actually control.
How investment gains are taxed in Europe
Taxation is national, so the rules depend on the country where you are tax resident. Even so, some patterns are common across Europe:
- Gains are usually taxed when you sell: in most countries you pay on realised gains, not on paper gains while you hold the investment.
- Dividends and interest are taxed too, often with tax withheld at source.
- Rates vary widely: for example, Spain taxes savings income on a progressive scale from 19% to 30%, France applies a flat tax (PFU) of 31.4% on most investment income from 2026, and Italy generally applies 26% on financial gains (12.5% on government bonds).
- Tax-advantaged wrappers exist in many countries, such as pension plans or specific savings accounts, often with holding periods or contribution limits.
- Losses can often offset gains, within limits set by each country.
- Crypto is taxable too, and from 2026 the EU’s DAC8 directive requires crypto platforms to report user transactions to tax authorities.
Tax rules change frequently and personal circumstances matter a lot, so for specific questions speak to a tax adviser in your country.
Common beginner mistakes
- Trying to time the market: not even professionals manage it consistently. Time in the market usually matters more than timing the market.
- Panic selling: the mistake that destroys the most returns.
- Chasing trends: buying whatever rose most last year because everyone is talking about it usually means arriving late.
- Not diversifying: putting everything into one asset, sector or country.
- Ignoring fees: as you have seen, they cost thousands of euros.
- Trusting promises of guaranteed returns: social media is full of fake experts and fraudulent schemes. If it sounds too good to be true, it probably is.
- Investing money you will need: the long term only works if you can wait.
Where crypto and Bitsa fit in
If, after building your foundation (emergency fund and a diversified portfolio), you want to put a small part into cryptocurrencies, the most prudent way is the same as with any other volatile asset: little by little and automatically, without trying to time the market.
That is what Bitsa Savings is for. It lets you schedule recurring crypto purchases from €6, at the frequency you choose, and withdraw whenever you want by topping up your card. It is a practical tool for applying DCA to crypto, but it does not replace a diversified portfolio or the traditional products covered above. Cryptocurrencies remain a high-risk asset: only commit what you are prepared to see fall sharply.
This article is for information and education only. It is not personalised financial or tax advice. Before investing, consider your situation and, if needed, consult an authorised professional. Past performance is not a guarantee of future returns.
Frequently asked questions about long-term investing
How much money do I need to start investing?
Much less than most people think. Many index funds and ETF savings plans let you start with small amounts and make regular contributions from €50 or even less. Consistency matters more than the starting amount.
What counts as long term in investing?
As a rule of thumb, five years or more, and ideally ten or more. The longer the period, the more time your investments have to recover from falls and benefit from compound interest.
Is an index fund better than an actively managed fund?
For most beginners, index funds are a very reasonable choice thanks to their diversification and low costs. Active funds can make sense in specific cases, but most fail to beat their benchmark over the long term after fees.
Can I lose money investing for the long term?
Yes. No investment that aims to beat inflation is risk-free. A long horizon, diversification and low costs reduce the chance of losing money, but they do not remove it.
Should I include crypto in my long-term portfolio?
It depends on your profile and goals. If you include it, keep it to a small percentage, only once your foundation is in place, and with a clear understanding that its volatility is much higher than that of a traditional fund portfolio.