The government already has an infinite supply of money for itself, by virtue of being the issuer of the currency. Money supply means the money in circulation in the non-government sector. Then by definition, taxation takes money out the economy and government spending adds money to the economy.
See https://en.wikipedia.org/wiki/Sectoral_balances
Discounting foreign trade, private sector surplus is exactly equal to government deficit.
> Sectoral balances analysis states that as a matter of accounting, it follows that government budget deficits add net financial assets to the private sector. This is because a budget deficit means that a government has deposited more money into private bank accounts than it has removed in taxes. A budget surplus means the opposite: in total, the government has removed more money from private bank accounts via taxes than it has put back in via spending.
> Therefore, budget deficits, by definition, are equivalent to adding net financial assets to the private sector; whereas budget surpluses remove financial assets from the private sector. This is represented by the identity: (G – T) = (S – I) – NX
> which is
> (Government sector balance) = (Private sector balance) – External sector balance
> where G is government spending, T is taxes, S is savings, I is investment and NX is net exports.
> The conclusion drawn from this is that private net saving is only possible when running a trade deficit if the government runs budget deficits; alternately, the private sector is forced to dis-save when the government runs a budget surplus and the trade deficit exists
In the above equation, increasing T has exactly the same effect as decreasing G by the same amount.