Non-resident taxes - collect fees
I would like to ask about the collecting the fees for filling 1040NR. I start a small company offering service for non-residents to file on their behalf the TAX RETURNS 1040NR mostly. Most other companies deduct the fee for the service from the IRS refunds before sending to the client. How I can do that as well? Is it doable to receive the cheques from IRS to Bank of America and using Power of Attorney to cash the cheque, then deduct the fee for the service and issuing personal cheque which to send to the client? Is there another way to do so?
Thank you very much in advance