The government can spend as much as it wants without needing your tax money. It doesn't matter how much money the government collects in taxes, it can spend as much as it wants regardless, because it can print as much money as it wants.
> The government DOES spend the money it garners through taxation
The government can spend the money regardless of how much it raises in taxes. Your taxes do not fund government spending.
Money is fungible. If government taxes $x and then spends $y, it is the same result as if it burns $x and then spends $y of newly printed money. In both cases the money supply changes by $y-$x