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South Carolina Tax Update: Why Your 2025 State Return May Look Different From Your Federal Return

As taxpayers begin filing 2025 tax returns, many South Carolina residents are noticing something unexpected. Their federal return may include new deductions and tax benefits, while their South Carolina return does not. This difference is not a mistake. It is the result of how states adopt federal tax law.

OBBA Explained: What the New Tax Law Means for Your 2025 Tax Return

The One Big Beautiful Bill Act (OBBA) became law on July 4, 2025, and it now governs how taxpayers file their 2025 income tax returns. Despite heavy media coverage, OBBA didn’t overhaul the tax code. Instead, it locked in major rules, added targeted deductions, and reopened planning decisions many taxpayers assumed were settled.