Is there a way to add a percetage to only some sales. Using a percentage instead of a $ amount?
Not natively in Square, no.
The best idea is to have a "Service Charge" (or the like) item that's a variable price. When you need to add this to the sale figure your percentage manually and add it here.
I want to add a flat percentage fee of the total invoice amount for all of my invoices. How can I add that to my invoice template?
Hey @ldunn! Welcome to the Community.
I moved your post to one of the existing threads for this same question.
As @ryanwanner listed above- you can add an item with a fixed price or you could add a tax and name it what you want.
These are really the only options for what you're looking to do.
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