TOPEKA, Kan. (AP) — Republican Gov. Sam Brownback’s spokeswoman says reversing an income tax break for business owners would not help Kansas maintain a pro-growth environment.

Brownback spokeswoman Eileen Hawley also said Friday that the proposal being considered by legislators could make the state’s tax climate unstable.

The proposal emerged from negotiations between three senators and three House members on tax issues. The House planned to consider it later Friday.

The measure would end a personal income tax exemption for more than 330,000 farmers and business owners enacted in 2012. Brownback championed the exemption.

Legislators must eliminate projected shortfalls in the state’s current and next budgets totaling more than $290 million. The tax proposal would close only part of the gap, but it would help keep the budget balanced in the future.