Can I add a service charge to QR table orders?

Yes, in most countries, as long as guests see it before they pay. Show it as optional so guests can remove it, or build it into your prices. In India, adding a service charge by default is not allowed.

• Show the rate on the menu and as its own line at checkout, never only on the final bill.
• UK: an optional service charge is outside the scope of VAT, and all of it must go to staff.
• UK: a compulsory charge must be in the menu price and takes the meal's VAT rate.
• India: the 2022 guidelines say no automatic or default service charge, and no forcing it.