Go to IB's navigation page. Log in with your IB username and password.
Go to "Transfer Funds" via the left menu.
Select "Deposit" and your bank account information. Your view might be slightly different from the one below.
You may be prompted for more information regarding your bank account (e.g. Swift Code, Bank Code).
Key in information relevant to your specific bank account which you want to debit money from.
Step 4Key in the amount of money you wish to fund, and click "Continue".
Step 5Once done, you should see a screen similar to below. Until now, you have notified IB that you will transfer funds to them.
Proceed to do an inter-bank transfer to the (Citibank Singapore) account specified by IB. Your funds should appear in your IB account within one working day.