The deadline for filing South Carolina state taxes generally aligns with the federal tax deadline, which is typically April 15 each year. However, if April 15 falls on a weekend or holiday, the deadline may be adjusted to the next business day. For tax year 2022, for example, the filing deadline was April 18, 2023, due to the holiday. Taxpayers in South Carolina should also be aware that they may request an extension, which allows for additional time to prepare their returns. This extension generally pushes the filing deadline to around October 15. It is always advisable for individuals to check the current information on the South Carolina Department of Revenue's official website to stay updated on any changes or specific details related to tax filing deadlines and requirements.