Choosing a Cryptocurrency Exchange: Fees, Limits and Custody

Three costs, one of which gets compared

The trading fee applies to order book trades and is usually a fraction of a percent. The
instant-buy spread applies to the simplified purchase screen and is frequently several percent.
The withdrawal fee applies when coin leaves and is often a flat amount per asset.

A first-time buyer using the simplified screen and then moving coin to a wallet pays the second
and third, and never touches the first. Ranking exchanges on the trading fee therefore ranks
them on a cost that particular user will not incur, which is how the standard comparison
manages to be both accurate and useless.

Indicative relative weight for a small purchase moved off-platform, not a measurement of any
specific exchange. The ordering is the point: the cost most compared is the one that matters
least in this pattern of use.

Limits are the constraint people meet late

Depositing is frictionless everywhere. Withdrawal limits are tiered by verification level, and
a ceiling that was irrelevant while you were accumulating becomes the whole problem in the week
you want to move a position.

Three things worth knowing before the first deposit: the limit at your current tier, what
raising it requires, and how long that review takes when the platform is busy. Those answers
predict your experience better than any fee table.

A balance is a claim

While coin sits on a platform, the platform holds the key and you hold an entry in its
database saying it owes you. That works until it does not, and this industry’s history is
substantially a history of it not working, through insolvency, through freezes during
volatility, and through jurisdictions being exited overnight.

Not an argument against exchanges, which are the only practical on-ramp for most people. An
argument for treating “I will move it later” as a decision with a cost rather than a neutral
default.

Two accounts, for a reason that is not fees

Most people want two things no single platform does equally well: a straightforward route from
their bank, and reasonable costs on the pairs they trade. Platforms strong at the first tend to
charge for it; those with better fee schedules often have narrower funding options.

Splitting the job costs one extra transfer and removes the compromise. The larger benefit is
redundancy: if one platform restricts your account, pauses withdrawals or exits your market,
you already have a working alternative rather than opening one under time pressure.

Order types are part of the fee

Fee tables usually list two rates, and the difference between them is larger than most of the
differences between platforms. An order that sits in the book waiting to be filled is charged
at one rate; one that takes an existing order immediately is charged at the other, typically
higher. On some venues the first is free or close to it.

Nothing about this is hidden, and almost nobody trading small amounts uses it, because the
default in every interface is the immediate one. Placing an order slightly away from the
current price and waiting costs patience and saves the difference every time, which compounds
quickly for anyone buying regularly.

The comparison worth running is therefore not the headline rate but the rate for how you
actually trade. A platform advertising the lowest immediate-execution fee can be more expensive
than one whose resting-order rate is zero, if you are willing to wait. It is the single largest
controllable cost on this page and the one least often mentioned in a comparison.

What support quality tells you before you need it

Ask one specific question before depositing, say the withdrawal limit at your verification tier, and note what comes back. A precise answer from someone who read the question is a
reasonable predictor of what happens when you have an actual problem.

A template reply, or no reply, is also information, and it is much cheaper to collect now than
during the week a withdrawal is stuck. This is the one due-diligence step that costs nothing
and that almost nobody performs.