ST. LOUIS - Proposition P is supposed to give raises to police and firefighters.

But that half-cent sales tax has small business owners worried that it could drive business out of the city and hurt their bottom line.

Karen Carty owns the Washington Ave Post Grocery store.

"I'm a business owner and right now I'm collecting 9.179 percent tax," she said. "So if I add another half percent to that it goes to 9.679 it is getting very close to ten percent. It occurred to me this morning that the state might have a cap.”

She believes the new tax is more than what the state maximum and isn’t fair to business owners like her.

The tax is expected to raise about $20 million dollars per year.