Here’s how that works: Taxpayers can only claim Maryland tax exemptions if they’ve first claimed the corresponding exemption at the federal level. Since the new tax code would eliminate many of those federal exemptions, there’s no way Maryland residents could claim the state version on their Maryland taxes unless state law changes. Without those state-level exemptions, Schaufele said, Maryland residents will pay $450 million more in state taxes and $300 million in local taxes each year.