Senate rejects conformity to federal tax changes after heated floor debate

The South Carolina Senate on April 1 rejected, by a roll-call vote of 16 to 27, a proposal to conform state tax law to recent federal tax changes often referred to in the debate as the “1 Big Beautiful Bill.” The motion failed during second reading after hours of floor debate that divided senators over immediate relief for some taxpayers and the long-term fiscal effects on the state budget.

Supporters said adopting conformity would let South Carolinians claim new federal deductions on this year’s returns and return roughly $280–$288 million to taxpayers this filing season. Opponents countered that the change would create a recurring budget hole, favor targeted carve-outs for narrow groups such as seniors and tipped workers, and undercut recent state income-tax restructuring aimed at broadening the base and lowering rates.

Senator from Edgefield argued against conformity on policy grounds, saying the Senate’s recent decision to restructure state income taxes should not be reversed for short-term gains: “We should be the saucer and the cup,” the senator said, urging the chamber to preserve the longer-term plan to lower rates for all taxpayers rather than adopt selective carve-outs. Senator from Dorchester, speaking for the no camp, framed the choice as one of fiscal stewardship and sustainability, saying a tax code that is “easy to file but impossible to fund is not a successful tax policy.”

Pro-confrontation exchanges focused on three practical concerns: the immediate fiscal cost to state revenues (estimates heard on the floor ranged from about $280 million to $288 million), the logistical burden on taxpayers and preparers if the legislature acts late in the filing season, and whether future Legislatures would be compelled to backfill recurring costs if federal provisions expire later. Senators also debated whether targeted federal changes (an additional senior deduction and a deduction for tipped workers) make sense in a state that does not tax Social Security and that is pursuing broader tax reform.

An amendment was adopted on the floor that sought to mitigate disruption for taxpayers who had already filed by providing either an amended-return option or a one-time state credit next year; that amendment passed before the final roll call on the conformity question. The Senate’s failure to move H3368 on second reading leaves conformity off the table for now; sponsors and opponents indicated the issue could be revisited, amended, or deferred to committee work.

What’s next: With H3368 defeated in the floor vote, supporters said they will continue to explore options to deliver tax relief while addressing budgetary concerns; opponents said they will press for continued adherence to the state’s recently passed income-tax trajectory. The Senate proceeded to other business and adjourned to meet again the next day.