Security should be the first thing you evaluate, because nothing else matters if the exchange loses your funds. Look at the exchange track record. Has it been hacked? How did it handle the incident? Does it publish proof of reserves? Does it use cold storage for the majority of customer funds? Exchanges that have survived security incidents and responded transparently are generally more trustworthy than those that have never been tested.
Regulatory status tells you about the exchange legitimacy and the protections available to you. An exchange licensed by regulators in the US, EU, Japan, or similar jurisdictions has undergone compliance reviews and is subject to ongoing oversight. This does not eliminate risk, but it means the exchange has met minimum standards for security, capital reserves, and customer protection. Unregulated offshore exchanges may offer more features but provide fewer protections.
Liquidity determines your execution quality. Check the order book depth for the pairs you plan to trade. A 1% price impact (the percentage the price moves if you place a market order of a specific size) is a useful metric. On major exchanges for BTC/USDT, you might see less than 0.1% impact on a $100,000 order. On smaller exchanges, the same order might move the price by 1% or more. Poor liquidity costs you money on every trade.
Fee structures vary significantly and compound over time. Most exchanges use a maker-taker model where maker fees (for limit orders that add liquidity) are lower than taker fees (for market orders that remove liquidity). The spread between maker and taker fees, and the volume-based discount tiers, can meaningfully affect your profitability. An exchange with 0.1% taker fees versus one with 0.05% saves you $50 on every $100,000 traded.
Available trading pairs and products matter depending on your strategy. If you trade altcoins, the breadth of listings is important. If you use leverage, the available futures and margin products are relevant. Some exchanges offer advanced order types, portfolio margin, or copy trading features that might be important to your workflow. Match the exchange product offering to your specific trading needs.
The trading interface and tools affect your daily experience. Is the charting package adequate? Does the order entry system support the order types you need? Is the mobile app functional if you need to manage positions on the go? API quality matters if you use automated systems. Some exchanges have modern, well-documented APIs with good library support. Others have poorly maintained APIs with frequent breaking changes.
Withdrawal and deposit options determine how easily you can move money in and out. Check which fiat currencies are supported, what payment methods are available, and what the withdrawal limits and processing times look like. Some exchanges restrict withdrawals during periods of high demand or require additional verification for large withdrawals. Understanding these policies before you need them prevents unpleasant surprises.
Customer support quality is something you will not appreciate until you need it. Read reviews about the exchange support responsiveness. Have they handled account issues, stuck withdrawals, or disputed trades in a timely manner? Exchanges that offer live chat or priority support for active traders are generally better than those that only provide ticket-based support with multi-day response times.
The practical approach is to use more than one exchange. Keep most of your trading on a well-regulated exchange with strong security and deep liquidity. Use a secondary exchange for assets or features not available on your primary platform. This diversifies your counterparty risk and gives you a fallback if one exchange has issues. Just be aware that splitting across too many exchanges fragments your capital and complicates your record-keeping.