Transfer money from your bank account to the account of the US-based beneficiary - Apex Clearing. Transfers to Apex are 100% safe and legitimate. It can take up to 4 working days after you initiate the transfer for the amount to reflect in your Groww USD balance. Groww is working with various banks to offer 100% online remittance. Currently, netbanking remittance is available with ICICI, HDFC, IDFC, and Kotak banks. If your bank does not allow online remittance, submit a duly-filled A2 form at your nearest branch.