Custodial vs. non-custodial: who holds your keys?
On a custodial exchange, the platform holds the private keys to your crypto on your behalf — similar to how a bank holds your cash. It's more convenient (password reset instead of losing a key forever) but means you're trusting the exchange's security and solvency. On a non-custodial wallet, you control the private keys directly, which removes counterparty risk but also removes any safety net if you lose access.
Most large exchanges are custodial by default, with an optional self-custody wallet offered alongside. Understanding which mode you're in for a given balance is more important than which exchange you're comparing.
How exchange fees are actually structured
- Maker/taker fees — most exchanges charge a different rate depending on whether your order adds liquidity (maker) or removes it (taker). Rates are usually tiered by your trailing 30-day trading volume: smaller accounts can pay somewhere around 1% or more per trade, scaling down toward a fraction of that — sometimes 0% on high-volume pairs — as volume grows.
- Spread — simplified "buy/sell" interfaces (as opposed to an order book) often bake the fee into the spread instead of showing a separate line item, which can make cost comparison harder at a glance.
- Withdrawal fees — charged per coin when moving crypto off the exchange, and they vary a lot depending on the network fee of the underlying blockchain at the time.
How much do you need to gain back after a drawdown?
The math isn't symmetric — the more you lose, the disproportionately larger the gain needed to recover, since the gain applies to a smaller starting balance.
Coin support and liquidity
Exchanges differ significantly in how many coins they list and, more importantly, how much trading volume (liquidity) exists for each one. A coin listed on an exchange with thin order books can have a wider effective spread than the quoted price suggests, even before fees. If you plan to trade less-established coins, checking daily volume for that specific pair matters more than the size of the exchange's overall listing.
How Coinbase compares
Coinbase is a large, publicly listed exchange built around regulatory compliance and a simplified buy/sell interface for beginners, alongside a separate, more advanced trading product (Coinbase Advanced) with lower, order-book-based fees for active traders. The appeal is mostly about a straightforward account-opening process and broad regulatory registration across jurisdictions. How that trades off against the actual fees depends heavily on your trade size and how often you're trading.
Compare Coinbase's current fee schedule
Review Coinbase's supported coins and published fee tiers before funding an account.
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Frequently asked questions
Is a bigger exchange automatically safer?
Size and regulatory registration can reduce certain operational risks, but no exchange eliminates custodial risk entirely. Many holders split funds between an exchange (for trading) and a personal wallet (for longer-term holding) to reduce single-point-of-failure exposure.
Why did my trade cost more than the quoted fee?
Often because the platform's "simple" buy/sell interface bakes a spread into the price on top of the stated fee — checking the advanced/order-book trading view on the same exchange usually reveals a narrower effective cost.
Do I have to pay taxes on crypto trades?
In most jurisdictions, yes — crypto-to-fiat and often crypto-to-crypto trades count as taxable events. Rules vary significantly by country, so check your local tax authority's actual guidance rather than assuming one rule applies everywhere.