The deadline for filing state income taxes in Maryland typically aligns with the federal deadline, which is usually April 15. However, if April 15 falls on a weekend or a holiday, the deadline may be extended to the next business day. For those who require additional time to file, Maryland allows taxpayers to request an automatic extension, which provides an additional six months. It is important to note that while an extension grants extra time to file the tax return, any taxes owed are still due by the original deadline. Therefore, taxpayers should ensure they make any necessary payments by that date to avoid penalties and interest. For the most accurate and up-to-date information regarding tax deadlines and potential extensions, it is advisable to refer to the official website of the Comptroller of Maryland.