What is minimum deposit?

The smallest amount an exchange or payment method will accept, set separately for each currency and each network.

It is the number printed in small type on a deposit screen, and it is not one number per exchange. A venue can accept $10 by card, $50 by bank transfer, and a different figure again for each crypto asset on each network it supports. The same asset on two networks frequently has two different minimums, because the chain fee the exchange must pay to sweep the deposit differs.

The consequence people meet the hard way is asymmetric. Below the fiat minimum, a bank transfer is usually returned minus fees. Below the crypto minimum, the deposit is often not credited at all and recovery is discretionary.

How it works

Exchanges set a minimum for three reasons. The first is cost: crediting a deposit means eventually moving it out of the receiving address, and if the chain fee to do so exceeds the deposit, the exchange loses money processing it. The second is compliance overhead, which is roughly fixed per transaction. The third is banking partner rules, which set their own floors on fiat rails.

For fiat, the minimum sits with the payment method rather than the exchange as a whole, so the figure differs between a card, a bank transfer, and a local instant payment scheme. For crypto, it sits with the asset and network combination.

There are two related floors that are easy to confuse with this one. A minimum trade size is the smallest order the matching engine accepts, which is separate from a deposit. A withdrawal minimum is usually higher than the deposit minimum, because the exchange pays the chain fee on the way out.

Minimums change. The figure shown on the deposit screen at the moment you deposit is the operative one, which is why that screen rather than a help-center article is the source to check.

Example

Illustrative case. An exchange sets a minimum of 0.0001 BTC on the Bitcoin network and 10 USDT on one chain but 1 USDT on another, because the sweep costs differ.

You send 4 USDT on the network with the 10 USDT minimum. The transaction confirms on chain and a block explorer shows it arriving at the correct address. Your balance stays at zero. The exchange's policy for below-minimum deposits then decides the outcome, and on many venues that policy is that recovery is not guaranteed and, where offered, carries a fee that can exceed the deposit itself.

Why it matters when you buy

A first purchase is exactly when this bites, because first purchases are small and often exploratory. Check the deposit minimum, the withdrawal minimum, and the trade minimum before funding an account, since a venue that accepts your deposit may not let you withdraw an amount that size afterwards. Payment rails and their limits by venue are recorded at the exchange directory, and the all-in cost of a small purchase is compared at the fee comparison.

Related terms

• withdrawal limit — the ceiling on the way out
• withdrawal fee — why exits cost more
• deposit address — where the transfer lands
• verification tier — what raises your limits
• network fee — the cost driving the floor
• fiat gateway — where fiat minimums are set

Questions

Why is the minimum different for the same coin on two networks?

Because the exchange pays a different chain fee to move the deposit afterwards. A cheap network supports a lower floor than an expensive one, and the deposit screen lists each separately.

I deposited below the minimum. What now?

Open a support ticket with the transaction hash. Some venues recover below-minimum deposits for a fee, others state that they cannot. The policy is published in the deposit terms and is worth reading before, not after.

Is the minimum deposit the same as the minimum I can buy?

No. The minimum trade size is a separate figure set by the matching engine, and it is usually much smaller. You can deposit the minimum and still find you cannot place the order you wanted.