IMHO, YMMV, etc., etc.
The problem with money is that most people don't actually understand what it is or what it's for. For example most would fail to understand when I say money has no value… it exists because we believe it to it exist… it has value because we assign it value. In reality money is merely as a means of communication, and has the ability to appear from nowhere, and has no inherent worth.
So consider a zero based economy, designed in the first instance to leverage the flow of communication and democracy inside an socialist anarchist utopian collective (if it helps imagine the government has warranted to provide a basic standard of living for all pan-humanity). It's an economy that is designed to facilitate the flow of intangibles, so don't go thinking it allows you to buy "Stuff" just yet.
Every year each citizen-subject-person is awarded a stipend of #31,337 dollar-pounds Who cares where it's coming from merely that the issuing agency is trusted and the system is regulated (it's an inflationary currency by design - although this matters little). With this money goes the following tax regime: 5% is for Family, 10% for your Church, 20% for your Nation, 15% for your Globe, and the remaining 50% is for your self.
Faith is an unusual concept so let me just say that no matter what my stated allegiance to any specific faith I would have to ask for the Church of Secular Humanism to be considered as my Church and that my tax be paid there.
Now throw away your hierarchical models of government and authority and consider the phrase "put your money where your mouth is" in a world where the Senate is regarded as an open forum for the all the people and no man stands above another except by consent. In this situation money a becomes a flexible mechanism of allocating limited resources to the resolution of the unlimited wants of man; approximately #15 dollar-pounds per person per hour. A granular system whereby mankind can leverage a responsive and adaptive democracy in other words.
You "buy" your senators by contributing to those whose rhetoric impresses you, allowing them proportionally more time, and their views more weight. You sponsor Senate backed think tanks - select committees - because the subject is one you support and your money democratises the outcome. Collective bargaining and party politics are supported via the concepts of the Church, the Nation, and Global, an enablement leading to democratic and accountable mechanisms of government open to free marked forces mitigated by a fair and equitable system of Justice. The money will also serve to focus resources to get stuff done.
To be fair the money also allows you to tell the living from the dead, when you're gone you quit spending. One also suspects savings should be depreciated and one should use your money to maximise the intangible offered by your Culture's value added process. One should also realise that in the final analysis that a fiscal profit motive is a corrupt influence and that money should flow back to the issuing entity and offset the initial grant… two sides to the bank account perhaps: Mana from heaven, Soma from man.
In a similar manner, as just as with the currencies of today, Dollar-Pounds could be used buy "stuff". Value added Tax is inevitable, and one has to realise that nations require tax to provide the basic functions of society in a way that leverages economies of scale in a manner unavailable to nominal citizens. However one should insist that ultimately Taxation be regarded as value-for-money, and paying your tax makes you a stake-holder/share-holder in a system which must likewise maintain an open democracy.
(the above is for informational purposes only and should not be considered an endorsement for any specific policies practices or beliefs, nor indeed should you assume it to be well thought out or indeed the working of a sane Mind :-)