There's also about $6.5 billion in additional money for property tax relief on top of what was passed two years ago. That may include what the Senate has proposed, which is an increase in the homestead exemption from $100,000 to $140,000 for most homeowners. For seniors, the exemption would rise from $110,000 to $150,000.

Legislation advances after a budget analysis estimates the cost of the voucher-style program will nearly quadruple in 4 years.

The Texas House and Senate are both seeking $1 billion for school choice this year, according to budget proposals shared Wednesday.