Can debossing on the front of a business card affect printing on the back?

No. Debossing on the front presses an indentation into the paper, but it does not harm printing on the back. You can safely deboss one side and print normally on the other.

• Debossing creates a recessed impression in the stock.
• The back side still prints cleanly, including fine detail like QR codes.
• Keep back-side artwork clear of any area where a heavy deboss might show through on very thin stock.
• Thicker cover stocks handle debossing best and keep both sides crisp.