What would "get[s] to keep the extra tax money" even mean in the context of the government? Bonuses for the employees? It's Monopoly money as far as I'm concern

What would "get[s] to keep the extra tax money" even mean in the context of the government? Bonuses for the employees? It's Monopoly money as far as I'm concerned. It's the criteria they're evaluated on. It's the driver behind every "for every $X you spend on the IRS the government gets $Y" talking point that legitimizes making the organization more/less powerful. It's the thing the organization is trying to maximize, and that's the rationale they give for where they target their current enforcement.