South Carolina Tax Changes: What You Need to Know for 2024 Filings (2026)

South Carolina residents, brace yourselves for a tax filing conundrum! Your state and federal tax returns might not match this year. But why? It's all due to a recent federal law, the One Big Beautiful Bill Act, which South Carolina has chosen not to embrace.

Here's the backstory: South Carolina once conformed to the Internal Revenue Code, but that ended in 2024. This means the state no longer automatically mirrors federal tax law changes. And this is where it gets tricky: the state hasn't passed any new laws to align with the federal deductions and changes.

In a January 30th letter, South Carolina revealed it won't implement specific deductions, such as those for qualified tips, overtime, and passenger vehicle loan interest. This decision will particularly affect service members and their tax filings.

Susan Vatell, a Liberty Tax franchise owner, explains, "South Carolina is not exempting tax on tips and overtime, so these amounts are being added back into the income calculations." This could result in a higher tax liability for some taxpayers.

And this is the part most people miss: seniors might also feel the pinch. Although South Carolina has its own senior deduction, the state's decision not to adopt the federal senior deduction could still lead to some differences in their tax calculations compared to previous years.

Vatell predicts noticeable disparities between federal and state tax calculations for those affected. She advises, "The sooner taxpayers file, the better, as we can't predict when or if the state will vote on new legislation."

But here's where it gets controversial: even if the state does conform to the federal law, there could still be exceptions made by state legislation, meaning taxpayers might not experience a seamless transition.

Stay tuned, as the tax filing season promises to be an intriguing one for South Carolina residents. And remember, it's always beneficial to file early!

South Carolina Tax Changes: What You Need to Know for 2024 Filings (2026)

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