Cryptocurrency investment decisions depend on your risk tolerance, time horizon, and understanding of what you're buying
There is no single right cryptocurrency to invest in. The choice depends entirely on your situation: how much money you can afford to lose, how long you plan to hold it, and how much time you want to spend monitoring your holdings. Bitcoin and Ethereum are the two largest by market value and have the longest track records, but size and age do not may provide returns. Smaller cryptocurrencies can move faster in either direction. Before you pick any cryptocurrency, you need to understand what problem it claims to solve, who uses it, and whether you believe that use case will grow or shrink.
This is fundamentally different from stock investing. When you buy a share of a company, you own a fractional claim on its assets and earnings. When you buy cryptocurrency, you own a digital token whose value depends on what others will pay for it later. There is no underlying business generating revenue. This makes cryptocurrency much more speculative and much more volatile than stocks.
Key Takeaways
- Bitcoin and Ethereum are the two largest cryptocurrencies by market value and have existed the longest, but size does not predict future price movement.
- Cryptocurrency prices can swing 20 to 50 percent in a single week, so only invest money you can afford to lose completely without affecting your life.
- Before buying any cryptocurrency, research what it actually does, who uses it, and whether that use case is growing or declining.
- Most financial advisors recommend cryptocurrency make up no more than 5 to 10 percent of a diversified investment portfolio, if you include it at all.
The difference between Bitcoin, Ethereum, and other cryptocurrencies
Bitcoin is the oldest and most established cryptocurrency, created in 2009. It was designed as a peer-to-peer payment system that does not require a bank or government intermediary. Bitcoin has a fixed supply cap of 21 million coins, which is built into its code. This scarcity is part of why some investors view it as a store of value, similar to gold. Bitcoin transactions are slower and more expensive than credit cards, so it is rarely used for everyday purchases.
Ethereum is a blockchain platform that lets developers build applications on top of it. The cryptocurrency associated with Ethereum is called ether. Unlike Bitcoin, Ethereum does not have a fixed supply cap. Ethereum is used to pay transaction fees on the network and to stake (lock up coins to help secure the network). Many other cryptocurrencies are built on the Ethereum blockchain.
Other cryptocurrencies exist for specific purposes: Stablecoin tokens are designed to hold a steady value, usually pegged to the US dollar. Some cryptocurrencies focus on privacy, others on speed, others on specific industries like healthcare or supply chain tracking. The more niche the purpose, the smaller the user base and the higher the risk that the use case never gains traction.
How to evaluate a cryptocurrency before you invest
Start by asking what problem the cryptocurrency solves and who actually uses it. Read the project's official documentation (called a whitepaper) and look for independent analysis from sources without a financial stake in promoting it. Check whether the project has a real development team with public identities, or whether the creators remain anonymous. Anonymous teams are not automatically disqualifying, but they do increase risk.
Look at transaction volume and network activity. A cryptocurrency with very low trading volume can be hard to sell when you want to exit. Check how long the project has existed and whether it has survived market downturns. A cryptocurrency that launched last month and has never been tested in a bear market carries more risk than one that has operated through multiple market cycles.
Be skeptical of promises of may provide returns or claims that a cryptocurrency will "moon" or reach unrealistic price targets. Anyone making those claims is either guessing or trying to sell you something. The price of any cryptocurrency can fall to zero, and many have.
Risk and volatility in cryptocurrency markets
Cryptocurrency prices move much faster and further than stock prices. A 20 to 50 percent price swing in a single week is normal. A 70 to 90 percent decline from peak to trough happens regularly. If you cannot watch your investment decline by half without panic-selling at a loss, cryptocurrency is not appropriate for you.
Cryptocurrency markets operate 24 hours a day, 7 days a week, with no circuit breakers to halt trading during extreme moves. This means a major price movement can happen while you sleep. You also cannot call a broker to sell during a crash — you have to execute the trade yourself on an exchange, and exchanges sometimes become slow or unavailable during periods of high volume.
Regulatory risk is real. Governments around the world are still deciding how to regulate cryptocurrency. A major regulatory change or ban in a large country can cause prices to drop sharply. Tax treatment also varies by country and changes over time, which can affect your actual returns after taxes.
How much cryptocurrency should fit in your overall portfolio
Most financial advisors who discuss cryptocurrency at all recommend it make up no more than 5 to 10 percent of a diversified portfolio. Some recommend zero percent. The reasoning is that cryptocurrency is highly speculative and uncorrelated with traditional investments, so a small allocation can add diversification without exposing you to catastrophic loss if the entire cryptocurrency market collapses.
This assumes you have already built a foundation of emergency savings (three to six months of expenses), paid off high-interest debt, and are investing in retirement accounts like a 401(k) or IRA. If you have not done those things, cryptocurrency should wait. A cryptocurrency investment should never come from money you need for rent, medical bills, or other essential expenses.
Where to buy cryptocurrency and custody options
You can buy cryptocurrency on an exchange — a platform that lets you trade fiat currency (dollars, euros, etc.) for cryptocurrency. Major exchanges include Coinbase, Kraken, and Gemini. Smaller exchanges exist but carry higher risk of hacking or collapse. When you buy on an exchange, you can either leave your cryptocurrency on the exchange (called a custodial wallet) or move it to a wallet you control yourself (called a non-custodial wallet).
If you leave cryptocurrency on an exchange, the exchange holds the private keys and you rely on their security. If the exchange is hacked or goes bankrupt, your cryptocurrency can be lost. If you move it to a non-custodial wallet, you control the private keys, but if you lose the keys or forget your password, your cryptocurrency is gone forever and cannot be recovered.
For most new investors, leaving cryptocurrency on a reputable exchange is simpler and safer than managing your own wallet. The tradeoff is that you are trusting the exchange's security and solvency.
Tax implications of cryptocurrency investment
In the United States, the IRS treats cryptocurrency as property, not currency. This means every time you sell cryptocurrency or use it to buy something, you trigger a taxable event. You owe capital gains tax on the difference between what you paid and what you sold it for. If you hold the cryptocurrency for more than one year before selling, you pay long-term capital gains tax (lower rates). If you sell within one year, you pay short-term capital gains tax (taxed as ordinary income).
You also owe taxes if you receive cryptocurrency as payment, if you stake cryptocurrency and earn rewards, or if you trade one cryptocurrency for another. Tracking all these transactions is tedious, and many investors underreport or forget to report cryptocurrency gains. The IRS is increasingly focused on cryptocurrency tax compliance, so underreporting carries real risk of penalties and interest.
Tax treatment varies significantly by country. Before you invest, research the tax rules where you live. Some countries tax cryptocurrency more heavily than others, and some have different rules for different types of cryptocurrency activity.
Frequently Asked Questions
Should I invest in cryptocurrency instead of stocks?
No. Stocks represent ownership in real businesses that generate revenue and earnings. Cryptocurrency is purely speculative — its value depends only on what others will pay for it. If you have not already built a diversified stock portfolio through retirement accounts and index funds, start there first. Cryptocurrency can be a small addition to a portfolio, but not a replacement for stocks.
Is Bitcoin safer than other cryptocurrencies?
Bitcoin is older and has a larger network, which means it has been tested through more market cycles and is less likely to disappear entirely. But "safer" is relative — Bitcoin can still lose 50 to 70 percent of its value. Smaller cryptocurrencies are generally riskier because they have smaller user bases and less established track records. Newer cryptocurrencies are riskier still.
Can I get rich quick with cryptocurrency?
Some people have made large returns on cryptocurrency investments, but many more have lost money. The people who got rich early usually bought when cryptocurrency was obscure and cheap, which is not possible now. Anyone promising you quick riches from cryptocurrency is either lying or trying to sell you something. Treat any such claims with extreme skepticism.
What happens if a cryptocurrency exchange goes out of business?
If you left your cryptocurrency on the exchange, it may be lost. Cryptocurrency exchanges are not insured like bank accounts, and bankruptcy law does not clearly protect cryptocurrency holdings. If you moved your cryptocurrency to your own wallet, it is unaffected by the exchange's collapse — but you can only access it if you still have your private keys or recovery phrase.
Should I invest in multiple cryptocurrencies or just one?
If you decide to invest in cryptocurrency at all, holding two or three of the largest and most established cryptocurrencies (like Bitcoin and Ethereum) spreads risk more than holding only one. Holding dozens of small cryptocurrencies does not reduce risk — it increases it, because you are betting on multiple unproven projects. Start with one or two if you start at all.