On the low end, a U.S. Government Accountability Office report estimated that state and local governments could gain between $8 billion and $13 billion in additional annual revenue from online sales taxes. The National Conference of State Legislatures, however, pegs that figure at around $23 billion a year.
Even if state budgets don't see a billion-dollar bump in the coming months, the holiday shopping season will still provide valuable data, says Charles Maniace, director of regulatory analysis at the tax software provider Sovos. Any revenue effect, he says, is good information to have. It will also help states plan for the future as they look to their 2019 budgets… [Read more in Governing.]