"To run a surplus" means having more money or resources than you need for your expenses or obligations. It is when your income or assets exceed your spending or debts.
Sentences with «to run a surplus»
The government runs a surplus when its revenues exceed its expenditures. (educationworld.com)
The city generally runs a surplus, unlike some cities, and has significant cash and investments on hand. (effectivecoverage.com)
He said in a statement that the state ran a surplus for each of the past four years and made an effort to put some of that money aside. (wxxinews.org)