Crypto trading works by buying and selling digital currencies on exchanges, where orders are matched between buyers and sellers much like a stock market. You can trade through a centralized platform like Coinbase or Kraken, which handles the matching internally, or through a decentralized exchange that uses automated software on a blockchain. Either way, the core loop is the same: place an order, get matched with someone on the other side, and pay a fee for the transaction.
Centralized vs. Decentralized Exchanges
Most beginners start on a centralized exchange (CEX). These platforms, like Coinbase, Kraken, Binance, and Gemini, work similarly to a brokerage account. You create an account, deposit money, and place trades through the platform’s interface. The exchange matches your buy and sell orders internally without settling every transaction on the blockchain, which makes trades execute quickly.
Decentralized exchanges (DEXs) cut out the middleman entirely. They use smart contracts, which are self-executing programs on a blockchain, to facilitate peer-to-peer trading. Every trade settles directly on the blockchain, so you can verify real-time trading activity, check liquidity levels, and even inspect the code governing the exchange. The tradeoff is speed: because each transaction hits the blockchain, settlement takes longer than on a centralized platform. DEXs also tend to have a steeper learning curve and require you to manage your own wallet.
How Orders Get Executed
When you place a trade, you’re choosing from several order types that control when and at what price your trade goes through.
- Market order: Executes immediately at the best available price. You get your trade done fast, but in a volatile market the price you pay might differ from what you saw on screen a moment earlier.
- Limit order: Sets the exact price you’re willing to buy or sell at. The trade only executes if the market reaches your price. This gives you control but means the trade might never fill if the price doesn’t hit your target.
- Stop-loss order: Triggers a market sell order when a cryptocurrency drops to a price you set. It guarantees execution but not a specific price, so during a sharp decline you could end up selling for less than your stop price.
- Stop-limit order: Combines a stop trigger with a limit price. Once the stop price is hit, the order becomes a limit order rather than a market order. This ensures you won’t sell below a certain price, but if the market moves too fast past your limit, the order may not execute at all.
Choosing the right order type matters because crypto markets trade 24/7 and can swing several percent in minutes. A market order is fine when you want speed and don’t mind small price differences. Limit and stop orders give you more precision when you’re not watching the screen.
Wallets and Who Holds Your Crypto
Where your crypto actually lives after you buy it depends on the type of wallet you use. This is one of the biggest differences between crypto and traditional investing.
When you buy crypto on a centralized exchange, your coins typically sit in a custodial wallet managed by that exchange. The exchange holds the private keys (the cryptographic passwords that control access to the funds) on your behalf. You can buy, sell, swap, and send crypto from this wallet, and the exchange handles security measures like cold storage (keeping keys offline) and fraud prevention. The convenience is real, but you’re trusting a third party with your assets.
A self-custodial wallet puts you in full control. You hold your own private keys, meaning no company can freeze your funds or transact on your behalf. You can connect to decentralized exchanges, swap tokens, and interact with blockchain applications directly. The flip side: if you lose your keys or your recovery phrase, no one can restore your access. There’s no customer support line to call. You are the bank.
Many active traders keep funds on a centralized exchange for quick trading and move longer-term holdings to a self-custodial wallet for added security.
What Trading Costs
Every trade comes with fees, and they add up faster than most beginners expect. Centralized exchanges typically charge maker and taker fees. A “maker” adds liquidity to the market by placing a limit order that doesn’t fill immediately. A “taker” removes liquidity by placing an order that fills right away (like a market order). Taker fees are usually higher.
For someone trading up to $10,000 in volume, typical fee ranges across major exchanges look like this: maker fees run from about 0.20% to 0.40%, while taker fees range from about 0.40% to 0.60%. On a $1,000 trade, that means you’d pay roughly $2 to $6 per transaction. Fees generally decrease at higher trading volumes.
On decentralized exchanges, you pay a swap fee (often around 0.3%, though it varies by protocol) plus network fees, commonly called “gas fees,” which go to the blockchain validators processing your transaction. Gas fees fluctuate based on network congestion and can range from a few cents on less-busy networks to several dollars on Ethereum during peak demand.
How a Trade Looks Step by Step
On a centralized exchange, the process is straightforward. You deposit funds, either by linking a bank account and transferring dollars or by sending crypto from another wallet. Then you navigate to the trading pair you want, like BTC/USD (Bitcoin priced in U.S. dollars), choose your order type, enter the amount, and confirm. The exchange matches your order, deducts fees, and updates your balance. The whole process can take seconds for a market order.
On a decentralized exchange, you connect your self-custodial wallet to the DEX interface, select the tokens you want to swap, approve the transaction, and confirm it in your wallet. The smart contract handles the rest. You’ll see the transaction pending on the blockchain before it settles, and you’ll pay gas fees from crypto already in your wallet. There’s no account to create and no identity verification, but you need to already have crypto in your wallet to get started.
Taxes on Crypto Trades
In the U.S., every time you sell cryptocurrency for a profit, you owe taxes on the gain. That includes selling crypto for cash and swapping one cryptocurrency for another. The taxable amount is the difference between what you paid (your cost basis) and what you received.
You report these sales on your federal income tax return in U.S. dollars. The IRS requires brokers to report your crypto purchases and sales on Form 1099-DA. For the 2025 tax year, brokers aren’t required to include cost basis details on that form, so you may need to calculate it yourself. Starting with the 2026 tax year (forms issued in early 2027), brokers will be required to include cost basis information. Tax software that connects directly to your exchange account can compile your transaction history and generate the necessary IRS Form 8949, which is especially helpful if you make dozens or hundreds of trades in a year.
If you simply buy crypto and hold it without selling, you don’t owe any tax on it until you sell. The tax rate depends on how long you held the asset: gains on crypto held for more than a year qualify for lower long-term capital gains rates, while gains on crypto held for a year or less are taxed as ordinary income.
What Moves Crypto Prices
Crypto prices are driven purely by supply and demand. There are no earnings reports or dividends like with stocks. Instead, prices react to factors like adoption news (a major company accepting Bitcoin as payment), regulatory developments (a government banning or embracing crypto), network upgrades, macroeconomic trends, and plain old market sentiment. Social media chatter and influencer endorsements can move smaller coins dramatically in either direction.
Volatility is significantly higher than in traditional markets. Daily swings of 5% to 10% are common for major cryptocurrencies, and smaller tokens can move 20% or more in a single day. This volatility creates opportunities for profit but also means losses can accumulate quickly, particularly for traders using leverage (borrowed funds to amplify their positions). Many exchanges offer leveraged trading, but a small adverse price move can wipe out a leveraged position entirely.