In Massachusetts, the deadline for filing individual income tax returns is typically April 15 of each year. However, if that date falls on a weekend or a holiday, the due date for filing may shift to the next business day. Taxpayers are responsible for ensuring their returns are filed on time, and they may also consider possible extensions. If an extension is requested, it allows additional time to file the return but does not extend the time to pay any taxes owed. Generally, the extended deadline is October 15. It is always wise for taxpayers to check the official Massachusetts Department of Revenue website for the most current information regarding deadlines, as there may be updates or changes to tax laws.