Brokerage accounts are abstract channels to maintain their investments, not investments themselves. Therefore, you can simply withdraw cash from your brokerage account will not make the tax bill go up. However, if you sell the assets in the account edit cash to get, you could be on the hook for the largest project the Internal Revenue Service Code.
The brokerage kept its investments in securities account, but is not considered a tax-deferred account such as an individual retirement account or 401 (k). This means that the withdrawal of money from it, in itself, is not a taxable event in the same way to attract more money from your account does not mean that additional taxes. However, it is subject to tax any time you sell an investment in a brokerage account, regardless of whether the money makes a brokerage account did not take the event.
for further details check it out this link
http://finance.zacks.com/taxes-calculated-brokerage-account-withdraw-9982.html
