Tax Deadline 2027name the form before the day

Four forms, four claims on the year

Form 1120-S is the S corporation return. For a calendar year it claims March 15, 2027, a Monday, and the K-1s go with it. Form 1065 is the partnership return and, for a calendar year, it claims that same Monday. They are not interchangeable just because the day matches. The books and the owners are different.

Form 1040 is the household return. For a calendar year it claims April 15, 2027, a Thursday. A calendar year Form 1120, the C corporation return, often claims that same Thursday. Again the day is shared and the work is not. We want the form number, not the season.

If you are not sure of the number, describe the company. One owner and wages, or two owners and a partnership, is usually enough for us to ask the right second question. We will not guess the form from a logo or from the way the shop talks about itself.

The forms that only ask for time

Form 4868 asks for more time on an individual return. Form 7004 asks for more time on the business returns. Neither one is the return. Both of them leave the original payment day in place. Naming 4868 when you mean the 1040, or 7004 when you mean the 1120-S, sends us to the wrong month.

An extended calendar year 1120-S or 1065 files by September 15, 2027, a Wednesday. An extended calendar year 1040 or 1120 files by October 15, 2027, a Friday. If you already filed the time request, say so, and say whether money moved that day. Those two facts change the conversation more than the form number alone.

Estimates are a form of their own kind

Estimates are not a fifth annual return. They are a cadence. April 15, June 15, September 15, and the following January, for many calendar year filers. In 2027 the first three are a Thursday, a Tuesday, and a Wednesday. January 15, 2027, a Friday, is the close of the prior set. The January 15 that follows the 2027 year falls on a weekend, and we will not invent the business day it moves to.

If your question is only which estimate is next, say the last one you paid. We can place you on the cadence without rebuilding the whole return on the first call. If none were paid, we will say that plainly too.

A year that ends in a month other than December does not use this cadence unchanged. Put the month in the note. Publication 505 has a different path for farmers and fishers, and we do not teach that path on this page.

What we do after the form has a name

We put that form on its day, we look at the month before the day, and we say whether that month matches your bank statement. If it does, the return can be prepared from it. If it does not, closing the month is the work, and the return waits. We prepare the return. We do not pretend a half closed month is a finished one.

Payroll setup can sit beside that work when you want it. We leave the wage run where it already lives. A deposit schedule will not be folded into the form name.

The copied list problem, if you have been carrying weekdays forward, is on a copied list. The reason one date cannot cover every form is on one day.