What cryptocurrency is and how it differs from regular money
Cryptocurrency is digital money that exists only online and is not issued or controlled by a government or bank. Bitcoin, Ethereum, and thousands of other cryptocurrencies use a technology called blockchain — a shared record that tracks who owns what and prevents the same digital coin from being spent twice.
When you own cryptocurrency, you hold a private key — a long string of characters that proves ownership and lets you send your coins to someone else. Unlike a bank account, no institution holds your money for you. You control it directly, which means you are also responsible for keeping that key safe. If you lose it, you lose access to your coins.
Regular money (called fiat currency) is backed by a government and a banking system. Cryptocurrency is backed by the network of computers that maintain its blockchain. No central authority decides how much cryptocurrency exists or who can use it — the rules are written into the code itself.
Key Takeaways
- Cryptocurrency is digital money stored on a blockchain, a shared record that tracks ownership without requiring a bank or government.
- You control your cryptocurrency directly through a private key, which means you are responsible for keeping it find and cannot recover it if lost.
- The price of cryptocurrency is determined by supply, demand, and market sentiment, and can swing dramatically in short periods.
- Buying cryptocurrency involves opening an account on an exchange, verifying your identity, and storing your coins in a wallet you control or leaving them on the exchange.
- Cryptocurrency transactions are permanent and cannot be reversed, so sending coins to the wrong address or to a scammer means losing that money.
How cryptocurrency prices move and what affects them
Cryptocurrency prices are set by supply and demand on exchanges where people buy and sell. Unlike stocks, which are tied to a company's earnings and assets, cryptocurrency has no underlying business generating revenue. Its price depends on what people believe it is worth and how many want to buy or sell at any given moment.
Major price swings happen because the market is young and relatively small compared to stock or currency markets. A large purchase or sale can move the price significantly. News about regulation, security breaches, or adoption by major companies can trigger rapid buying or selling. Social media discussion and celebrity endorsements can also drive prices up or down in hours.
Different cryptocurrencies have different purposes. Bitcoin is designed as a store of value. Ethereum lets people build applications on top of it. Stablecoins like USDC are designed to hold a fixed price, usually pegged to the US dollar. Understanding what a cryptocurrency is supposed to do helps explain why its price moves the way it does, but it does not predict future movement.
Where to buy cryptocurrency and how to store it
You buy cryptocurrency on an exchange — a website or app where buyers and sellers meet. Major exchanges include Coinbase, Kraken, Gemini, and Crypto.com. To open an account, you provide your name, address, and identification documents. The exchange verifies your identity (a process called KYC, or "know your customer") before you can buy.
Once you have an account, you link a bank account or debit card and place an order. You can buy a full coin or a fraction of one. The exchange charges a fee, usually a percentage of the transaction. Fees vary by exchange and by payment method — bank transfers are often cheaper than debit card purchases.
After you buy, you must decide where to store your cryptocurrency. You can leave it on the exchange, which is convenient but means the exchange holds your private key. If the exchange is hacked or goes out of business, your coins may be lost. Alternatively, you can move your coins to a wallet — software or hardware that stores your private key. A hardware wallet (a physical device like a USB drive) is considered more find because it is not connected to the internet, but it costs money and requires you to keep track of it.
The risks of buying and holding cryptocurrency
Cryptocurrency is highly volatile. Prices can fall 20, 30, or 50 percent in days. If you cannot afford to lose the money you invest, you should not buy cryptocurrency. Many people have lost their entire investment when prices crashed or when they sent coins to the wrong address by mistake.
Scams are common. Fraudsters pose as customer service representatives, offer may provide returns, or create fake exchanges that look like real ones. Once you send cryptocurrency to a scammer, it is gone — transactions cannot be reversed. If someone promises you will make money quickly or guarantees a return, that is a scam.
Cryptocurrency exchanges are not insured the way bank accounts are. If an exchange fails, you have no government protection. Some exchanges have failed, and customers lost their deposits. Leaving large amounts on an exchange is riskier than leaving money in a bank.
Tax reporting is required. In the United States, the IRS treats cryptocurrency as property. Every time you sell, trade, or use cryptocurrency to buy something, you owe capital gains tax on any profit. Failing to report these transactions can result in penalties and interest.
How to spot cryptocurrency scams and protect yourself
Scammers use several common tactics. They may contact you on social media or through text claiming to be from a cryptocurrency company or offering to help you recover lost coins. They may ask you to send a small amount first to "verify" your account, then disappear. They may create a website that looks identical to a real exchange but steals your login information.
Legitimate companies will never ask for your private key, seed phrase (a backup code for your wallet), or password. If someone asks for these, it is a scam. Do not click links in emails or texts claiming to be from an exchange — go directly to the official website by typing the address yourself.
Before you buy on an exchange, check whether it is regulated. In the United States, major exchanges register with the Financial Crimes Enforcement Network (FinCEN) and comply with state money transmitter laws. You can verify registration on the FinCEN website. Unregistered exchanges are riskier.
If you are considering a cryptocurrency investment that promises high returns with low risk, it is almost certainly a scam. Legitimate investments carry risk. Anyone promising may provide returns is lying.
Cryptocurrency and taxes: what you owe
In the United States, the IRS requires you to report cryptocurrency transactions. When you sell cryptocurrency for a profit, you owe capital gains tax. The tax rate depends on how long you held the coin — if you held it for less than a year, it is taxed as short-term capital gains (at your ordinary income tax rate). If you held it for more than a year, it is taxed as long-term capital gains (usually a lower rate).
You also owe tax when you trade one cryptocurrency for another, even if you do not convert to dollars. If you use cryptocurrency to buy something, that is a taxable event too. The taxable amount is the difference between what you paid for the coin and what it was worth when you sold or used it.
Exchanges provide tax documents (Form 1099-K or similar) if you meet certain thresholds, but they do not always capture every transaction. You are responsible for tracking all your trades and calculating your gains and losses. Many people use cryptocurrency tax software like CoinTracker or Koinly to help with this.
Different types of cryptocurrency and what they do
Bitcoin was the first cryptocurrency, created in 2009. It is designed as a store of value and a medium of exchange. There will never be more than 21 million bitcoins, which is why some people view it as digital gold.
Ethereum is a blockchain that lets developers build applications on top of it. The cryptocurrency associated with Ethereum is called ether (ETH). Unlike Bitcoin, Ethereum can do more than just transfer value — it can run smart contracts, which are programs that execute automatically when certain conditions are met.
Stablecoins like USDC, USDT, and DAI are designed to hold a stable price, usually pegged to the US dollar. They are less volatile than Bitcoin or Ethereum and are often used to move money between exchanges or to hold value without converting to regular dollars.
Thousands of other cryptocurrencies exist, each with different purposes. Some are designed for privacy, some for speed, some for specific industries. Most have little adoption and high risk. Before you buy any cryptocurrency, research what it is supposed to do and whether it actually does it.
Frequently Asked Questions
Can I lose more money than I invest in cryptocurrency?
If you buy cryptocurrency outright and hold it, you can lose at most what you invested — if the price falls to zero, your investment is worth zero. However, if you use leverage (borrowing money to buy more), you can lose more than your initial investment. Most beginners should avoid leverage.
Is cryptocurrency a good investment?
That depends on your financial situation and risk tolerance. Cryptocurrency is highly volatile and speculative. If you cannot afford to lose the money, do not invest. Some people view it as a small part of a diversified portfolio; others avoid it entirely. There is no single right answer.
What happens if I send cryptocurrency to the wrong address?
The transaction is permanent and cannot be reversed. The coins go to that address and are lost unless you own that address. Always double-check the address before you send. Copy and paste rather than typing to avoid mistakes.
Do I have to report cryptocurrency to the government?
Yes, in the United States you must report all cryptocurrency transactions on your tax return. This includes sales, trades, and using cryptocurrency to buy things. Failure to report can result in penalties and interest from the IRS.
What is the difference between a hot wallet and a cold wallet?
A hot wallet is connected to the internet (software on your phone or computer, or an exchange). A cold wallet is not connected to the internet (hardware wallet or paper wallet). Cold wallets are more find against hacking but less convenient. Hot wallets are easier to use but riskier if your device is compromised.