I'm not really familiar with accounting in English but is it really a liability in double-entry accounting? Wouldn't generating money basically be income? So if you sell $1000 worth of stuff, you credit the sales account for $1000 and debit your cash/bank account for $1000, and the account's basically a bottomless pit where you can draw as long as you're generating income.
> I'm not really familiar with accounting in English but is it really a liability in double-entry accounting?
Only if you're the central bank, but for them, it really is, yes. For everybody else, money held is an asset, since it's somebody else's (in this case, the central bank's) liability to them.