The processing time for business tax payments by the CRA may vary depending on the method used. If you choose to get through the CRA's services, such as My Business, you can find out the processing time by logging in and checking the status. Payments made through e-banking, Interac, and PayPal are usually received by the CRA within 2 to 5 business days. It is advisable to plan ahead and make bills well in advance of the due date to ensure timely processing. For more information on payment options, and processing times, and to learn how to pay by credit card, you can visit the canada.ca website.