Accountant for LLC Alternative The spring filing a company still owes
No tax due is not the end of the federal calendar.

The date follows the letter
A calendar-year partnership generally files Form 1065 by 15 March. A calendar-year S corporation generally files Form 1120-S the same day. A C corporation and the owner's individual return generally land on 15 April. A Saturday, a Sunday, or a listed holiday slides that morning forward, and only the instructions for that year say how far. In a year when 15 March or 15 April is already a weekday, the date does not move. The K-1 that each owner needs rides with the entity return.
A year with no tax due can still have a return due. A partnership with a loss still files. An S corporation with thin wages still files. A disregarded company still puts the activity on the owner's Form 1040, even when the bottom line is small. A zero tax bill is not a zero filing.
Confirm the year on the form instructions before you rely on a sentence on a website, including this one. Dates move. The habit of looking does not. These lines are here so a spring conversation has a shape. A web page is not your return.
The return wants the same revenue the month already showed
The federal return is built on the revenue the books can defend. Form 1065, Form 1120-S, and Schedule C do not get a mood. They get the sales, the costs, and what the owner took out. Those three piles have to match the bank before anyone argues about which line they land on.
That is why a readable month matters before the spring date. A return built on a guess about revenue is how a quiet year accidentally looks taxable, or the reverse. The months get closed here before anyone fills that return.
A sales-tax receipt, in a state that collects one, is a different filing from the federal return. Any owner who has paid that tax at a register knows the receipt. The spring return is a different obligation. A quiet Saturday does not cancel it.
An extension is a date, not a nap
Form 7004 can move an entity return to a later morning. Form 4868 can move an individual return. A later filing morning, once Form 7004 or Form 4868 has been accepted, leaves the payment morning where the original due date put it. A payment that is short can draw penalty and interest on the unpaid share. The details live in the form instructions for that year. If your company paid a large amount last year, say so, because the calendar is not the simple one.
What gets missed is the return that has to travel with a zero bill. Owners hear no tax due and then send nothing. We put the entity date on the calendar in the month before it, before anyone treats the zero as a finished year.
If you are not sure whether last spring was filed, that is the question to send. We would rather look it up with you than assume a prior preparer handled a return you never saw. Write the spring date down before the month of the filing arrives.
Ask about the spring filing
Say whether last spring was filed, and whether you expect the tax itself to come out at nothing.
You will be talking to the Steven Palmieri practice.