There is no single "best" cryptocurrency to invest in, and anyone claiming otherwise is selling something

The cryptocurrency market moves on news, regulation, adoption, and speculation — not on a formula that produces a winner. Bitcoin has the longest track record and largest market value. Ethereum powers the most active applications. Smaller coins promise higher returns but carry higher risk of total loss. What matters is understanding what you are actually buying, how much you can afford to lose, and whether crypto fits your financial situation at all.

Most financial advisors recommend that cryptocurrency, if you hold it at all, should be a small portion of a diversified portfolio — often described as money you could lose without changing your life. That framing matters more than which coin you pick.

Key Takeaways

  • Bitcoin and Ethereum are the two largest cryptocurrencies by market value and have the longest operating history, but size does not may provide returns.
  • Smaller cryptocurrencies can move faster and larger in percentage terms, but they also carry higher risk of becoming worthless.
  • Cryptocurrency prices are driven by adoption, regulation, technical developments, and investor sentiment — not by earnings or cash flow like stocks.
  • You should only invest money in crypto that you can afford to lose completely, and crypto should typically represent a small portion of your overall investments.
  • Before buying any cryptocurrency, understand how you will store it, how you will pay taxes on gains, and what happens if the exchange or wallet you use shuts down.

How Bitcoin and Ethereum differ from smaller cryptocurrencies

Bitcoin was the first cryptocurrency and remains the largest by market value. It has a fixed supply cap of 21 million coins, which is built into its code. Ethereum is a platform that runs applications and smart contracts — ether (ETH) is the currency that powers those applications. Both have been operating for over a decade and have the deepest liquidity, meaning you can buy and sell large amounts without moving the price dramatically.

Smaller cryptocurrencies — sometimes called altcoins — often promise specific use cases: faster transactions, lower fees, privacy features, or applications in gaming, finance, or supply chains. Some of these projects are legitimate technical work. Many are not. The smaller the market value, the easier it is for a few large holders to move the price, and the higher the risk that the project fails and the coin becomes worthless.

Liquidity matters practically: if you own a coin with a tiny market, you may not be able to sell it quickly when you want to, or you may have to accept a much lower price than the last trade you saw.

What actually drives cryptocurrency prices

Cryptocurrency prices do not reflect earnings, cash flow, or assets the way stock prices do. They reflect what investors believe the coin will be worth in the future, regulatory news, adoption by merchants or institutions, technical developments, and often pure speculation.

Bitcoin's price has historically spiked when major companies announced they would accept it or hold it on their balance sheet. Ethereum's price moves on upgrades to its network and on the activity level of applications built on top of it. Smaller coins can spike on announcements, celebrity endorsements, or simply because traders are betting on a price increase.

This means cryptocurrency is more volatile than stocks or bonds. A 20% price swing in a single day is not unusual. If you cannot tolerate seeing your investment drop 50% in a month without panic-selling, cryptocurrency is probably not for you.

The practical costs and risks of holding cryptocurrency

Buying cryptocurrency is not the same as buying a stock through a brokerage. You typically buy it on a cryptocurrency exchange — a website or app that matches buyers and sellers. That exchange holds your coins in an account, or you can transfer them to a wallet you control yourself.

If you hold coins on an exchange and that exchange is hacked or shuts down, your coins may be lost. If you hold them in a wallet and lose the password or recovery phrase, they are gone forever — there is no customer service to call. If you hold them in a wallet connected to the internet, they can be stolen by malware. These are not theoretical risks; they happen regularly.

You also owe taxes on cryptocurrency gains. If you buy a coin for $100 and sell it for $500, you owe capital gains tax on the $400 profit — and you have to track every transaction yourself. The IRS treats cryptocurrency as property, not currency, which makes tax reporting complex if you trade frequently.

Questions to ask before buying any cryptocurrency

Before you invest in any coin, ask yourself: Can I afford to lose this entire amount? If the answer is no, do not buy it. Cryptocurrency is speculative, and total loss is possible.

Second: Do I understand what this coin actually does? If someone explains it to you and you still cannot describe it in one sentence, you probably do not understand it well enough to invest.

Third: Where will I store it, and have I tested that storage method? Do not buy a coin and then figure out where to keep it. Set up a wallet or exchange account first, transfer a small amount, and make sure you can access it and move it before you invest serious money.

Fourth: How will I track this for taxes? If you trade frequently, you will need to report every transaction. Some people use tax software designed for crypto; others hire accountants. Plan for this cost.

Fifth: What is my exit plan? When will you sell? If you are holding it hoping for a 10x return and have no plan for what happens if it drops 50%, you are gambling, not investing.

Diversification and cryptocurrency's role in a portfolio

Financial advisors who recommend cryptocurrency at all typically suggest it should represent no more than 5% to 10% of your total investments, and only if you have already built a foundation of stocks, bonds, and emergency savings. The reasoning is that cryptocurrency is highly volatile and uncorrelated with traditional markets — meaning it does not move in sync with stocks or bonds, which can be useful for diversification. But that volatility also means it can wipe out a significant portion of your wealth quickly.

If you have high-interest debt, no emergency fund, or are saving for something you need in the next five years, cryptocurrency should not be part of your plan. It is a speculative asset, not a savings vehicle.

Red flags and common mistakes

Be skeptical of anyone who tells you a specific coin is a may provide winner, that you should invest now before it is too late, or that you are missing out if you do not buy. These are sales tactics, not investment advice.

Avoid coins that are heavily promoted on social media or by celebrities. Influencers are often paid to promote coins, and the price often crashes after they stop talking about it.

Do not borrow money to buy cryptocurrency. If you use a margin loan or credit card, you can lose more than you invested.

Do not chase losses. If you buy a coin and it drops 50%, the temptation is to buy more at the lower price hoping to recover. This often leads to larger losses.

Frequently Asked Questions

Should I buy Bitcoin or Ethereum if I am going to invest in crypto?

Both have longer track records and deeper liquidity than smaller coins, which makes them less risky in the sense that you can actually sell them when you want to. But "less risky" does not mean safe — both have experienced 50% to 80% price drops. If you are new to crypto, starting with one of these two is more straightforward than trying to research smaller projects, but the decision should still be based on your risk tolerance and how much you can afford to lose.

Can I get rich quick by investing in cryptocurrency?

Some people have made large returns on cryptocurrency investments, usually by buying early and holding through volatility. Many more have lost money. Cryptocurrency is not a path to quick wealth for most people — it is a speculative asset with high volatility. If someone is promising you quick returns, they are either lying or selling you something.

What happens if the cryptocurrency exchange I use shuts down?

If you hold coins on an exchange and it shuts down or is hacked, you may lose your coins. If you hold them in a wallet you control, the exchange shutting down does not affect you — your coins are still accessible with your private key. This is why many investors move coins off exchanges to personal wallets, though that introduces the risk of losing the wallet password.

Do I have to report cryptocurrency on my taxes?

Yes. The IRS treats cryptocurrency as property, and you owe capital gains tax on any profit when you sell. You also owe taxes if you receive cryptocurrency as payment or as a reward (called staking). You need to track the purchase price, sale price, and date of every transaction. Many people use specialized tax software or hire accountants to handle this.

Is cryptocurrency a good investment for retirement savings?

Cryptocurrency is too volatile and speculative for most retirement accounts. If you have access to a 401(k) or IRA, those should be your priority for retirement savings because they offer tax advantages and you can invest in diversified, lower-volatility assets. Cryptocurrency, if you hold it at all, should be a small portion of your overall portfolio, not your primary retirement strategy.