As another concurrent thread indicates, Cash is no longer king.
I would assume that in such a post scarcity society, everyone’s needs are taken care of, and that most of their simple wants are as well.
If everyone simply has essentially a UBI with more money coming in than they could easily spend, and automatic transactions taking place without them even pulling out their card, then it would be easy to see a world where the citizens never think about money.
You go to a restaurant, order what you want, it comes out, you eat and leave. Your “credits” are automatically deducted from your personal account, without you doing anything.
Same with most mundane and regular goods and services.
It would only be when you start abusing it, or trying to buy up all the beachfront property in the world, that you would find yourself running into the limits of your personal credit.
Then there would be interpersonal transactions. If you go to a place of public accommodation, that would be linked into the overall computer network, but if you are just wanting something made, or a service from an individual, then you may be directly giving them something of value in return. Whether that be favors or something more tangible would be left to the involved parties to determine.
So, “there is no money” isn’t something that really could work. “We never think about money” seems pretty feasible.
Anyway, no source or cites, just speculation on how such a system would work.