I’m paying the same as cash customers , there are some places mostly small businesses that will offer a discount for cash.but that has to be posted.

Nope. I either get cash back or points to use as cash. The purchase price never changes whether I use a "cash back" card, a regular card, or cash...

Not what I meant. Think that perhaps the restaurant ups its menu pricing a bit to cover a higher cc cost.

Well that would only mean the cash customer is only paying more for his meal then the cc that’s going to get back something for using card and pricing for any business includes many variables

I agree on charge cards.

Also about the tip.
Isn't it better to leave cash then add it to you charge card for tax purposes.

Actually, the banks do charge the merchants more to process cash back credit cards than they do for non-cash back cards. Each type of credit card has a separate bank fee, and it is all rolled into the monthly fee to the merchant. However, the restaurants definitely benefit by accepting credit cards. For example, when McDonalds started accepting credit cards in 2003, their average transaction amount increased from $4.50 to $7.00. People just spend more money when they can charge it.

I never add tips to CC. I do not trust the restaurants to pass on full, or any of the amount to workers.
By cash tipping, I know server has had the money in hand.
I will not eat at a restaurant that adds a 'service fee' either.
A. For same reason as above.
and,
B. Who are the management to presume I/we enjoyed meal, or service?
JMO.

If you mean that the server could under-report income because of the lack of a paper trail, then yes, the server could pay less income tax.

But you're assuming they actually up the CC charges...

If I get 3% back from my sams cc at restaurants somebody is paying for it.

The people that pay cash help.

When I owned a business many years ago, the bank who processed the credit card charges had a complete list of every card that we could accept. The bank fees ranged from about 1 to 3 percent depending on the type of card used and the amount and our average monthly transaction. The cash back cards had higher fees. But, the fact is that most restaurants could never survive if they didn't accept credit cards. The credit card customers spend more money than cash customers. Raising prices to cover credit card fees would not make sense. I think the banks are actually helping merchants to make more money.

People paying 19% interest on their credit cards...

Whether you go shopping, restaurants, doctors office, whatever, always look at the receipt BEFORE you leave the establishment. That way any questions you may have can be addressed immediately. Mistakes happen.

Whenever I write a 7, I put a line through the vertical so that we could not be confused with number nine. One always has a horizontal line at bottom.