Before you start: 9 things you need to know

Many beginners make the same mistakes – often because nobody told them beforehand. That’s where we come in: these nine points will save you costly mistakes. At the end, there’s a checklist to tick off.

How Bitcoin behaves

1. A Bitcoin payment is final

No bank and no support team can reverse a confirmed Bitcoin payment. That’s deliberate: Satoshi Nakamoto wanted payments that practically cannot be reversed, partly to protect sellers from chargeback fraud.^[1]

• A mistake costs money. All you can do is ask the recipient to send the amount back.
• Check the whole address, not just the beginning and end, and don’t copy it from your wallet’s transaction history. Scammers plant look-alike addresses there, often with changes in the middle.^[6]
• Send a test amount first whenever you transfer to a new address – even to your own wallet.

2. The price swings sharply

Since 2013, Bitcoin has lost between 77 and 85% of its value three times, measured from record high to low.^[2] A fall like this is called a drawdownGlossaryDrawdown (decline from the peak)The decline of a price from its last peak to the following low, as a percentage. Bitcoin has fallen by more than 75% several times; from October 2025 to June 2026, it fell by around 53% (in US dollars).On the learning path: Stage 3 · Step 3 – Returns & risk →In the glossary →×. Here’s how it would have hit $1,000 invested exactly at the peak:

Phase	Fall from peak to trough	Value of $1,000 at the low (approx.)	Back above $1,000 after
2013–2015	−85%	$150	just over 3 years
2017–2018	−83%	$165	just under 3 years
2021–2022	−77%	$235	just over 2 years

Based on daily closing prices in US dollars, rounded.^[2] Most recently, the price fell 53% from its record high in October 2025 to the end of June 2026.^[3],[2] One bitcoin currently costs $85,533.

Even a year’s patience isn’t always enough: according to our analysis, around three in ten of all daily purchases since 2013 were at a loss one year later – in the worst case by more than 80%.^[2] Germany’s consumer advice centres (Verbraucherzentrale) even consider a total loss conceivable and advise consumers against Bitcoin as an investment.^[4] Past prices are not a forecast – neither for gains nor for losses.

Your foundations

3. Only money you can genuinely do without

Only invest money whose loss wouldn’t change your life.

The future calculator plays through scenarios like this, including a crash. We don’t give you a percentage, because only you know your situation. For orientation: Germany’s consumer advice centres say that anyone who invests anyway should keep it to 5% at most.^[4] BaFin, Germany’s financial regulator, generally recommends spreading your assets across different types of investment.^[5]

Money you’ll need in the next few years for a car, training or a deposit doesn’t belong in Bitcoin. So far, it has taken between just over two and just over three years to get from one peak to the next record high. More in Bitcoin as a small portfolio allocation.

4. Emergency fund first

Before Bitcoin comes a reserve for the unexpected. As a rule of thumb for a reserve available at short notice, BaFin suggests three months’ income.^[5] Without one, you might have to sell bitcoin in an emergency – perhaps just when the price is low. Financial foundations first explains how to build the reserve.

5. No debt, no credit, no leverage

According to BaFin, loan interest is often higher than the return on a comparable investment; it advises checking whether you would be better off paying off debt first.^[5] If you buy bitcoin on credit, you still have to repay the loan even if Bitcoin has lost 80%.

Leveraged products are even riskier: with tenfold leverage, a 10% fall is mathematically enough to wipe out your entire stake.

The world around you

6. Scammers target beginners

In the US, cryptocurrency investment fraud was the scheme with the highest reported losses in 2025: $7.2 billion. Contact often begins by text message, on social media or via a dating app, and quickly moves to a messaging app. Then comes a trading platform that shows fake profits. Anyone who wants to withdraw is told to pay ‘fees’ or ‘taxes’ first.^[7]

Warning signs according to the European financial supervisory authorities:^[6]

• high or ‘guaranteed’ returns,
• time pressure (‘today only’),
• unsolicited contact by message or phone,
• a request for your seed phraseGlossarySeed phrase (recovery phrase)A sequence of usually 12 or 24 words from which your wallet derives all its private keys. Anyone who knows the words has full access to your bitcoin – so they belong in an offline backup and never in anyone else’s hands.On the learning path: Stage 5 · Step 3 – Backing up your seed phrase →In the glossary →×, your private key or a password,
• an offer to ‘recover’ lost money for a fee.

Only buy from providers authorised in the EU; you can check this in ESMA’s register.^[6] Choosing the right provider shows how. You’ll find all the common scams, with a ‘genuine or scam?’ exercise, in Spotting & avoiding scams.

7. Tax and reporting obligations are part of it

In Germany, the following applies to private individuals: if more than a year passes between buying and selling, the gain is tax-free. Within this holding periodGlossaryHolding period (speculation period)In Germany, the gain from selling privately held bitcoin is tax-free if more than one year passes between purchase and sale (§ 23 EStG, as of September 2026). Each purchase has its own holding period.On the learning path: Stage 6 · Step 3 – Bitcoin & tax →In the glossary →×, it is taxable – unless all gains from private disposals in a year add up to less than €1,000.^[8] This is an exemption limitGlossaryExemption limit (€1,000 Freigrenze)In Germany, gains from private disposal transactions stay tax-free if they total less than €1,000 in a calendar year. From €1,000, the entire gain is taxable.On the learning path: Stage 6 · Step 3 – Bitcoin & tax →In the glossary →× (Freigrenze), not an allowance: with gains of €999.99 you pay nothing, but at €1,000 the entire amount is taxable. For tax purposes, the gain counts in euros.

• Document everything. According to the German tax authorities, missing records count against you – for example after a platform has gone bust or been hacked.^[9] Download your providers’ transaction histories regularly.
• The tax office finds out. Since 2026, under the German law implementing the EU directive DAC8GlossaryDAC8 (EU reporting rules for crypto-assets)EU directive that has required crypto providers to report customer data and transactions to the tax authorities since 1 January 2026. In Germany, the KStTG implements it; the first report, for 2026, is due by 31 July 2027.On the learning path: Stage 6 · Step 3 – Bitcoin & tax →In the glossary →×, crypto providers have been recording your tax ID and your transactions. They report them every year by 31 July to the Federal Central Tax Office (Bundeszentralamt für Steuern), for the first time in 2027.^[10]
• The rules may change. According to analyses by tax firms, a draft bill from the Federal Ministry of Finance would tax crypto-assets bought after 31 December 2026 at the 25% flat-rate withholding tax (Abgeltungsteuer) plus solidarity surcharge, regardless of how long they are held. Earlier purchases would keep the one-year rule. Nothing has been passed (as of September 2026).^[11] The reform tracker follows the latest status.

The basics are covered in Bitcoin & tax in Germany. This is not tax advice.

Your mindset

8. You are responsible

As a rule, crypto-assets are protected neither by deposit guarantee schemes nor by investor compensation schemes.^[12] If a provider holds your bitcoin, you depend on its security and reliability. If you keep them yourself, you are your own bank: anyone who loses their private key and recovery phrase can no longer access their funds.^[4]

The flip side: if you hold your keys yourself, nobody can block your access. This self-custodyGlossarySelf-custodyYou hold the private keys to your bitcoin yourself – in your own wallet rather than with a provider. Nobody can freeze your bitcoin. But nobody can help you if you lose your seed phrase and keys.On the learning path: Stage 5 · Step 1 – Understanding custody →In the glossary →× is best practised with small amounts, until you have mastered every step and tested a recovery once. Understanding custody and Backing up your seed phrase explain how. The security check shows in a few minutes where you stand when it comes to protecting your bitcoin.

9. You have time

Rising prices, success stories, headlines: all of this creates the fear of missing out (FOMOGlossaryFOMO (fear of missing out)‘Fear of missing out’. With Bitcoin, it’s the urge to buy quickly after sharp price rises. FOMO is a common trigger for costly bad decisions.On the learning path: Stage 3 · Step 2 – Goal first →In the glossary →×). It is a poor adviser. According to an estimate by the Bank for International Settlements (BIS), by the end of 2022 most users who had bought bitcoin through crypto apps since 2015 had lost money – in almost all the countries studied. After the collapses of 2022, large investors sold while small retail investors bought.^[13]

The Bitcoin network runs around the clock, every day of the year. There is no deadline you could miss. Three habits help:

• The 24-hour rule: sleep on every unplanned purchase or sale.
• Plan first, buy second: write down why you’re buying bitcoin, how much, and what you’ll do at −50%. Goal first, strategy second shows how; the goal compass helps with this.
• Regular rather than spontaneous: many people feel more comfortable with fixed, small amounts than with one large lump sum. Savings plan or lump sum? compares the pros and cons.

Your checklist before your first purchase

Any open points show you what to work on next.