What each funding rail actually is

Every rail here has a cost. On three of the four it is not shown as a fee, which is why "zero fee" is the least informative sentence on a funding page.

Why there is no country list

The obvious version of this page would be a table of countries against available deposit methods. We are not publishing one, for a reason worth stating plainly rather than hiding behind "check with the platform".

Availability by country is the fastest-moving data on any exchange. It changes because a partner bank revised its risk policy, because a payment provider ended a relationship, or because a rule changed in one jurisdiction — and none of those events come with an announcement. A country table would be wrong in places within weeks of publication, and a reader has no way to tell which rows have gone bad.

Worse, it would be wrong in the direction that costs money. Someone reading a stale row would attempt a rail that no longer exists, or budget for a fee structure that has changed. So this works one level up, at the rail type, where the facts hold: what the route is, where the cost sits, roughly how fast it settles, and how reliably it stays available.

Where the cost hides on each rail

Only one of the four normally shows you its cost as a line item. On the other three it is inside the exchange rate.

A bank transfer usually charges a visible flat fee, which is why it looks expensive on small amounts and cheap on large ones. Card funding, payment providers and peer-to-peer trading typically quote you a rate rather than a fee, and the cost is the distance between that rate and the mid-market rate at the same moment.

This is why comparing published fees across rails produces the wrong answer. The correct comparison is: how much fiat left your account, and how much crypto arrived. Everything between those two numbers is the cost, whatever it was labelled. Running that comparison once, on a small amount, tells you more than any fee page.

Availability is not a property of the platform

When a funding rail disappears, the instinct is to read it as a signal about the platform. Usually it is not.

Every fiat rail depends on at least one business that is not the exchange: a partner bank, a card issuer, a licensed payment institution. Any of those can change its own risk appetite for this entire category, with no reference to the specific platform and no notice to you. The exchange finds out at roughly the same time you do.

The practical consequence is worth more than the diagnosis: knowing a second route in advance is worth more than optimising the first one. If your only way to fund an account stops working on a day you need it, the saving you made on fees is irrelevant. This is also true in the other direction, which matters more — a rail that works for deposits may not be available for withdrawals, and that is worth confirming before you fund rather than after.

The full classification by clearing route, including why the route decides both the cost and the failure mode, is in the article on fiat rails.

How to check what is available to you

Three steps, in this order:

1. Look inside a verified account. Available rails depend on your verification level and your registered region, so the public help pages will show you a superset of what you can actually use. The deposit screen after verification is the authoritative answer.
2. Check the withdrawal side at the same time. The set of rails is not always symmetrical, and finding out afterwards is the expensive way to learn it.
3. Run one small deposit and one small withdrawal. This gives you the real cost, the real settlement time, and confirmation that both directions work — none of which any documentation can tell you.

Step three costs one round trip of fees. Compared with discovering a broken exit route while holding a balance, it is inexpensive.