State the company requiring payment of service charge, searched from CA registration number or BA customer account number
Display invoice information and the total service charge requiring payment; select Invoice which requires payment
Upload the file of the Withholding Tax Certificate into the system
In the case of choosing to pay by credit card, provide the card information and state the total after deducting withholding tax paid according to the attached file.
Successful transaction displays the status of service charge payment.
Select the category of pay by credit card.
Display information of the invoice and the total service charge; to record the total requiring payment
The system prompts a selection of banks and links to the Internet banking of that bank
You will receive one receipt for the full payment, plus total withholding tax deducted as sent
Send the original withholding tax document to PO Box 252, Dusit Post Office, Bangkok 10300
After the system has cleared the service charge payment, it will send a receipt/tax invoice by mail to the company address together with the bill for the next billing cycle.