user74147: Many crypto exchanges impose quite low limits on withdrawing balances from their sites. For example Binance has an equivalent limits of 100 BTC for a daily withdrawal.
The question is, why do they need to impose a limit at all? Are the customers coins not in segregated custody, and when sold in a transaction on the exchange, the funds should be there irrespective of the size of the transaction. In short, why would an exchange need to limit withdrawals at all?

user63872: Limits could be in place for a number of reasons, such as:

Regulations imposed by the government of the country the exchange is operating within (eg unverified customers can only withdraw a certain amount)
The majority of the exchange's coin reserves are held in an offline, cold storage wallet. So a very large withdrawal may require more coins than the exchange has available in an automated hot wallet (this is a security consideration)

Every exchange will have its own considerations in this regard, but these examples should give you some basic understanding of why limits would exist. 

74147: <p>Many crypto exchanges impose quite low limits on withdrawing balances from their sites. For example Binance has an equivalent limits of 100 BTC for a daily withdrawal.</p>

<p>The question is, why do they need to impose a limit at all? Are the customers coins not in segregated custody, and when sold in a transaction on the exchange, the funds should be there irrespective of the size of the transaction. In short, why would an exchange need to limit withdrawals at all?</p>
 63872: <p>Limits could be in place for a number of reasons, such as:</p>

<ul>
<li><p>Regulations imposed by the government of the country the exchange is operating within (eg unverified customers can only withdraw a certain amount)</p></li>
<li><p>The majority of the exchange's coin reserves are held in an offline, cold storage wallet. So a very large withdrawal may require more coins than the exchange has available in an automated hot wallet (this is a security consideration)</p></li>
</ul>

<p>Every exchange will have its own considerations in this regard, but these examples should give you some basic understanding of why limits would exist. </p>
