The tax filing deadline for S Corps is an important date to keep in mind. Typically, S Corps must file their tax returns by March 15th of each year. This is a bit earlier than the April deadline most individuals are familiar with, so it’s important to mark your calendar. If March 15 falls on a non-working day, the deadlines move to the next business day.
The specific form to file is
Form 1120-S, which is kind of like Schedule C but for S Corps. If you’re not ready by March 15th, you can request an automatic six-month extension by filing Form 7004. This will push your deadline to September 15th.
However, it's essential to remember that this extension is for filing the paperwork, not for paying any taxes owed. Those payments are still due by March 15th to avoid interest and penalties.
If your S Corporation has employees, you might need to file Form 940, the annual Federal Unemployment Tax Return. You must file this if you pay $1,500 or more in wages in any quarter or have at least one employee working part of a day in 20 or more weeks.
Form 940 reports wages for unemployment taxes, which the corporation sends to the IRS. The filing deadline is January 31 each year, but if you pay the tax on time, you can file by February 10.