It would be smart to start forming those relationships now. Sure, by law you have to pay taxes on bartering, but ...That sounds communist as hell. "The People's Ledger" sounds like something from Russia or Red China.
Barter is going to be big among those who seek to avoid the prying eyes of the communists, or using alternate forms of money - non-government controlled cryptocurrency, precious metals, jewels - whatever. The problem is going to be that to exist in any form other than packing up and moving into the wilds - you have to participate in their system. If gas stations no longer take cash - you'll have no choice but to pay by whatever the new money is. Same with grocery stores, clothing stores, etc.
For people who are able and willing, it's usually not too tough to find some kind of material thing, service, or labor to trade.