Nearly every investor has heard of Bitcoin (BTC), the world’s largest cryptocurrency by market capitalisation. Its rapid rise to prominence has overshadowed its humble and anonymous origins – even as its creator, Satoshi Nakamoto, has continued to refuse to reveal their identity. A single bitcoin has traded in the tens of thousands of dollars for years, frequently well above $50,000 since 2024 and surpassing $100,000 in 2025.
Enter Bitcoin fractional shares. The minimum Bitcoin investment is nowhere near the price of a whole coin. With fractional shares (sometimes called “partial shares” or simply “fractions”), it’s possible to invest just $10 in Bitcoin, or any other small amount you’re comfortable with. Both “fractional shares” and “partial shares” refer to the same concept – trading decimals of a whole asset.
Yes, it is possible to buy fractional shares of Bitcoin or “partial Bitcoins” with a minimum investment of $10 or even less, depending on the broker or exchange you use. The absolute minimum varies by platform – we’ll cover the specifics further in the article.
What is a satoshi, or a fraction of a bitcoin?
The average Bitcoin investor owns approximately 0.2 BTC or less. The smallest unit of value in the Bitcoin network is called a satoshi (or “sat” for short), named after the cryptocurrency’s pseudonymous creator. There are 100,000,000 satoshis in a single bitcoin – meaning one satoshi is equal to 0.00000001 BTC.
For example, if one bitcoin is worth $100,000, then a single satoshi would be worth $0.001 (one-tenth of a US cent). This extreme divisibility is fundamental to Bitcoin’s design – it sustains the original ethos articulated by Nakamoto: decentralised, accessible finance for everyone, regardless of how much capital they’re starting with.
Fractional shares are what make this divisibility practical for everyday investors. You don’t need to buy a whole bitcoin (or even a meaningful fraction of one) – you simply specify a fiat amount (like $10 or €50), and your broker calculates the equivalent satoshi amount automatically. This makes Bitcoin accessible to investors at any starting capital level.
What is the minimum amount of Bitcoin you can buy?
The satoshi remains the technical minimum of Bitcoin you can theoretically own. However, since a single satoshi is worth a fraction of a cent, online brokers and exchanges have implemented their own practical minimums for retail trading.
Typical minimum Bitcoin investments across major platforms include:
- Coinbase: minimum purchase of approximately $2 in local currency for spot crypto trades;
- eToro: minimum first trade of $10 for crypto purchases (US and international users);
- Bitstamp (acquired by Robinhood in June 2025): minimums vary by deposit method, typically starting at €/$10;
- Kraken: minimum order sizes vary by asset, with Bitcoin minimums typically around $10;
- Trading 212: fractional crypto trading available for users in supported jurisdictions, with minimums typically from €/£1.
Different brokers and exchanges set different rules – and these may also vary by jurisdiction, deposit method, and account tier. Always verify the current minimums on your chosen platform before opening a position.
Beyond minimum trade size, also consider spreads and trading fees, which can have a meaningful percentage impact on small purchases. A $10 Bitcoin purchase with a 1% spread effectively costs you $10.10 of value at the point of execution – manageable for occasional purchases but worth optimising for frequent small contributions (a common strategy known as dollar-cost averaging, or DCA).
Best Platforms for Bitcoin Fractional Shares
eToro
Trusted by 40+ million users worldwide, eToro gives you access to 120+ cryptocurrencies. You can trade by yourself or copy other investors’ trades through social trading features. eToro went public on Nasdaq in May 2025 (ticker: ETOR), and as of February 2025 holds a CySEC MiCA permit to offer crypto services across the EU. Read our eToro summary.
Disclaimer: eToro is a multi-asset investment platform. The value of your investments may go up or down. Your capital is at risk.
Coinbase
Coinbase is the largest US-based crypto exchange and one of the top 5 globally by trading volume. It has approximately 120 million monthly users worldwide and operates in 100+ countries. Coinbase was added to the S&P 500 in May 2025. Explore our Coinbase summary.
Kraken
Kraken is one of the largest crypto exchanges globally – ranked #1 by Kaiko in Q3 2025. Kraken operates in 190+ countries and reports 13+ million registered users (4.4+ million funded accounts as of Q2 2025). Read our Kraken summary.
Crypto.com
With over 250 types of cryptocurrencies, Crypto.com offers similar products compared to Coinbase with the addition of a more comprehensive, developed NFT marketplace and high rewards for using its crypto debit card. Explore our Crypto.com summary.
#1 eToro
eToro at a glance
52% of retail CFD accounts lose money.
eToro is one of the world’s leading social trading platforms, with over 40 million users across 140+ countries. The platform allows you to discuss crypto markets by sharing your views and reading comments from other investors. eToro’s signature CopyTrader feature also lets you replicate the strategies of experienced traders (called “Popular Investors”), with these top traders earning rewards based on their followers.
eToro offers 100+ cryptocurrencies on a clean, intuitive interface. When buying cryptocurrencies, you gain real ownership of the underlying asset if you meet all three requirements:
- You did not use leverage via CFDs on the position;
- You did not short-sell the crypto asset;
- You are not a client under the supervision of the Australian Securities and Investments Commission (ASIC).
European eToro clients can withdraw eligible cryptocurrencies from the platform to the eToro Money crypto wallet and transfer them externally if desired.
The platform also offers leveraged crypto exposure through CFDs (Contracts for Difference). CFDs are derivatives that let you take a position without owning the underlying asset, allowing higher returns from smaller capital but exposing you to proportionally higher losses. Most retail CFD traders lose money – exercise extreme caution with leveraged crypto positions.
eToro listed on NASDAQ in May 2025 (ticker: ETOR) and is regulated by multiple top-tier authorities including the FCA (UK), CySEC (Cyprus), ASIC (Australia), and SEC and FINRA (US).
Read our in-depth eToro review for more details.
Crypto investments are risky and may not suit retail investors; you could lose your entire investment. Understand the risks here: https://etoro.tw/3PI44nZ
CFDs are complex instruments and come with a high risk of losing money rapidly due to leverage. 52% of retail investor accounts lose money when trading CFDs with this provider. You should consider whether you understand how CFDs work and whether you can afford to take the high risk of losing your money.
#2 Coinbase
Coinbase at a glance
Coinbase is one of the largest cryptocurrency exchanges in the world, with over 100 million verified users globally. The platform combines a user-friendly interface with a wide selection of cryptocurrencies and a comprehensive educational library focused on helping beginners get started. Both the web platform and the iOS/Android mobile apps are designed for users with limited technical knowledge.
For more advanced traders, Coinbase offers Coinbase Advanced Trade (the platform that replaced Coinbase Pro in late 2022), supporting limit orders, stop orders, advanced charting tools, and lower trading fees than the standard interface.
Coinbase is publicly listed on NASDAQ (ticker: COIN) since April 2021, providing additional transparency through SEC reporting requirements.
While Coinbase is known for its simplicity, it generally has higher transaction fees than competitors like Kraken or Binance on the standard retail interface (Advanced Trade significantly reduces this). Users also frequently report frustration with customer service, citing limited human support and primarily automated responses. Additionally, Coinbase Europe operates as a regulated e-money service provider under Irish regulation, with crypto-asset services supervised under the EU’s MiCA framework.
#3 Kraken
Kraken at a glance
Founded in 2011, Kraken is one of the oldest crypto exchanges still in operation. Users can buy and sell over 600 cryptocurrencies with competitive fees (typically up to 0.26% maker/taker, lower for high-volume traders), versatile funding options, 24/7 customer support via live chat, and industry-leading security standards. You can buy fractional Bitcoin starting with as little as $10.
Kraken offers tools suitable for beginners scaling up to features needed by expert traders. The platform also provides detailed Crypto Guides, instructional videos, and an educational podcast – excellent resources for investors at any level.
We particularly like Kraken’s inclusion of futures, margin trading, and staking. Staking functions similarly to a locked savings account: with the right cryptocurrency, you could earn meaningful annual yields. This is appealing to investors who want to keep some assets in secure custody while generating additional income.
On the downside, Kraken does not currently offer a self-custody wallet for retail users (although it maintains a reputation for storing approximately 95% of exchange assets in cold storage across geographically distributed locations). Kraken’s trading platform and mobile app are also relatively basic compared to dedicated trading platforms – active traders looking for advanced charting and analytics may find more polished alternatives.
In May 2025, Kraken acquired NinjaTrader for $1.5 billion to expand into traditional asset classes (futures, forex, and US equities). Kraken is reportedly planning an IPO in 2026, further reinforcing its institutional credibility.
#4 Crypto.com
Crypto.com at a glance
Crypto.com serves over 100 million users across 90+ countries, offering competitive trading fees, comprehensive staking and rewards programmes, and a Visa debit card that lets you spend cryptocurrencies and earn cashback on everyday purchases.
The platform has expanded significantly in recent years. In May 2025, Crypto.com acquired a Cyprus-based MiFID-licensed entity to offer securities, derivatives, and CFDs across the European Economic Area. In 2025, it also launched stock and ETF trading for US users, marking its expansion from pure crypto into traditional financial markets.
Crypto.com is also recognised for its NFT marketplace, which features an intuitive interface suited to investors entering the NFT space.
Holders of the platform’s native utility token Cronos (CRO) benefit from reduced trading fees and enhanced rewards when using the Crypto.com Visa card – cashback ranges from 1% to 8% on certain goods and services depending on your CRO holding tier.
If you’re new to crypto, Crypto.com’s interface can feel overwhelming compared to more streamlined platforms like Coinbase. For investors with some experience who value low fees and access to a broad range of digital assets, however, Crypto.com is well worth considering.
Is there a downside to buying fractional shares of Bitcoin?
Yes – the main downside of fractional shares is the relative impact of trading fees. Online brokers and exchanges frequently charge flat fees or minimum charges that disproportionately impact small purchases, alongside spreads between bid and ask prices.
For example, if you buy $5 worth of Bitcoin on a platform charging a flat $0.99 trading fee plus a 2% spread, your effective cost is roughly:
- $0.99 flat fee = 19.8% of your $5 purchase;
- + 2% spread = additional cost on the underlying execution;
- = effectively 21-22% of your investment lost to fees on a single transaction.
This is a significant concern for small fractional purchases. The spread typically manifests as a slightly higher price than the mid-market rate when buying (and a slightly lower price when selling), meaning you receive marginally fewer satoshis per dollar than the headline price suggests.
To mitigate this, consider:
- Choosing low-fee platforms: exchanges like Kraken, Coinbase Advanced Trade, or Crypto.com Pro typically have lower fees than retail-focused interfaces;
- Batching purchases: making fewer, larger purchases rather than many small ones reduces fixed-fee impact;
- Using subscription-based pricing: some platforms offer monthly subscriptions that waive trading fees, beneficial for regular dollar-cost averagers;
- Comparing total cost (including spreads): the headline trading fee is only part of the story – always check the spread on actual quotes.
Bottom line
Fractional shares are essential for retail crypto investors worldwide. Without them, the vast majority of investors would be priced out of Bitcoin given its supply cap of 21 million coins and a price that has traded in the tens of thousands of dollars (and beyond) for years.
The practical minimum amount of fractional Bitcoin you can buy is determined by your chosen broker or exchange – typically $1 to $10 depending on the platform – since a single satoshi is worth a fraction of a US cent. Trading fees can consume a significant portion of small crypto investments, making the choice of broker and platform structure particularly important for fractional buyers.
Key takeaways for fractional Bitcoin investors:
- Compare total costs: include flat fees, spreads, and any platform charges – the cheapest headline rate isn’t always the lowest total cost;
- Consider regulated platforms: prioritise exchanges and brokers regulated in your jurisdiction (e.g., MiCA-licensed in the EU, FCA-registered in the UK) for better consumer protections;
- Think long-term: Bitcoin is volatile – fractional shares allow you to dollar-cost average into the asset over time rather than timing the market;
- Use self-custody when appropriate: for larger holdings, consider transferring Bitcoin to a personal wallet (hardware or software) rather than leaving it on an exchange. Remember “not your keys, not your coins”;
- Verify minimums before committing: each platform has different minimums and fee structures – always check before opening an account.
We’ve included detailed reviews of the major fractional Bitcoin platforms above to help you make an informed decision. The right platform for you depends on your investment size, frequency of trading, jurisdiction, and whether you value advanced trading features or beginner-friendly simplicity.
FAQs
What do fractional shares of Bitcoin mean?
The term fractional shares refer to fractions of an equity share and most commonly is associated with traditional equities. In the context of Bitcoin, it technically refers to those satoshis you would own, but whose value is still less than a single bitcoin.
Is it good to buy fractional shares of Bitcoin?
So long as you’re aware of your online brokerage’s fees and are comfortable with purchasing Bitcoin, then fractional shares offer a fantastic opportunity for making a small investment.
How do Bitcoin fractional shares work?
Bitcoin fractional shares are defined as satoshis. A single satoshi worth less than $0.01 is all you need to get started, but most online brokers require an arbitrary minimum investment, such as $10 or €10.
