Is credit card surcharging legal in Nevada?

Usually yes, with conditions. Nevada allows a credit card surcharge but attaches rules you have to meet. Nevada appears to have no statute prohibiting credit card surcharges, but the Attorney General has publicly set the terms on which they are acceptable: surcharges must be posted at the point of entry and point of sale before the transaction, itemised on the receipt, and must not exceed what the merchant actually pays to accept the card. The Attorney General has warned that burying such fees on a consumer's bill without notification is deceptive and has advised consumers to ask for the merchant's surcharge policy. Enforcement runs through Nevada's deceptive-trade-practices regime rather than a dedicated surcharge statute.