noun / adjective
surplus
SUR-plus/ˈsɜːrplʌs/
An amount beyond what is needed or required.
Two extra sandwiches form a surplus after the lunches are packed.
Etymology
“Over” and “more” express an excess beyond a required amount. A surplus is therefore not just a large quantity, but what remains after use or need has been accounted for.
In context
This isn't just a surplus. It's a system windfall. One that allows taxpayer money to be spent without the usual guard rails of a true check and balance budget system, the kind that should return over payments.