
Buy Bitcoin. Now.
Select an amount, confirm the price, and buy Bitcoin instantly – 24/7, from €10 to €100,000.
Investments involve risks.
Bitcoin Smash Buy
From €10 to €100,000
No waiting for a target price. Choose your amount and buy Bitcoin directly at the current price.
Available 24/7
Bitcoin never sleeps. With Smash Buy, you can buy around the clock – even on weekends.
Transparency including price guarantee
See your price and how much Bitcoin you'll get before you buy. Confirm. Done.
The fastest way to Bitcoin
1. Deposit Euro
Deposit euros via SEPA or SEPA Instant into your 21bitcoin account.
2. Select amount
Decide how many euros you want to invest in Bitcoin and confirm the price.
3. Smash Buy
Confirm your purchase and the Bitcoin will be credited to your 21bitcoin account.
The price you see is the price you pay
Bitcoin moves 24/7. That’s why we guarantee the Bitcoin price you see for 20 seconds.
Before you make a Smash Buy, you will see:
- Bitcoin price
- Service fee
- Amount of Bitcoin you will receive
No surprises after your purchase.

Deposit euros first – then decide for yourself when to buy
At 21bitcoin, you don't have to link a euro deposit to a bitcoin purchase immediately. You can keep euros in your account first and then decide flexibly how you want to use them.
0% deposit fees
1. Deposit euros
If you want to buy Bitcoin now.
2. Receive funds
Your available euro balance will appear in the 21bitcoin app.
3. Smash Buy
If you want to buy only once your target price is reached.

Three ways to Bitcoin
You don't have to choose just one strategy.
Your euro balance can be used at any time for Smash Buy, Savings Plan, or Limit Order.
Smash Buy | Savings Plan | Limit order | |
|---|---|---|---|
Differences | |||
When? | Now | Regularly | At your target price |
Execution | Immediately | Automatically | At target price |
Ideal for | Direct purchase | Long-term saving | Planned entry |
From | €10 | €10 | From €10 |
Fees | 1.29–1.49% | 0% from day 8 | Planned start |
Combine Smash Buy & Self-Custody
With Auto Wallet Transfer, you can set a BTC balance threshold at which your Bitcoin will be automatically transferred to your own wallet.
If you wish, you can connect your hardware wallet to 21bitcoin via xPub to automate not just your purchases, but your self-custody as well.

FAQ
Investing tailored to your needs & goals
Learn more about why it pays to invest with 21bitcoin:
What our customers say
Buying Bitcoin—as easy and transparent as online banking.


