Credits are maintained by the Alliance and carry the official Alliance seal. They are printed for the use of the system, but are only good in the Core and on the Midway worlds. Cash is printed and distributed by Rim mining worlds, Hestia being the major one, and is the only tender used on the edge. Credits can be turned into Cash and vise versa on most Midway planets.
Most transactions dealing with credits are not done by passing paper tender between parties (though it can be done) but through electronic means. ID cards linked to personal accounts and information are usually how transactions are processed. When it is person to person and no paper currency is used a datapad with ID cards inserted into it can also be used to transfer money between parties.
One credit is equal to about two US dollars.
Platinum is the term given to groups of ten credits, ie 30 platinum for 300 credits
Credits come in denominations of 1, 5, 10, 20, 50, 100, 500
Credits also come in coins are available in 1 or 5
The only kind of change comes in 5, 10, or 50 cents
One unit of cash is equivalent to a fourth a credit, or about fifty cents US
They come in 1, 5, 10, 20, and 50
Cash coins come in 5, 10, 25, and 50 cents and 1 and 2 cash coins