> Average cash handling cost is typically estimated in the range of 4%-15%

I think the assumption is they declare only a portion of their cash receipts.

I think that is commonly the reason why some businesses do offer discounts, but note the person above replied to "but for rules-following merchants taking cash isn't any cheaper than paying the credit card fees" which seems to have specifically anticipated exactly that.

	▲	eszed 15 hours ago \| parent [-]
		Yes, exactly. The business team at my (rules-following) company were ecstatic when municipalities around us began disallowing cash payments during COVID. Taking cash is, for us, directly 2-3% (and actually more, if you count labor, which is difficult to track) more costly than the vig on credit cards.