How a small firm talks to clients about Form 4868 and Form 7004 so payment day is expected

The IRS is blunt. An extension gives you until October 15 to file without a failure to file penalty, if you requested it by the April due date. You still pay what you owe by the April filing date. The IRS lists three ways to get the extra time to file: pay online and check the extension box, use Free File to request the extension, or file Form 4868. (Get an extension to file your tax return)

Publication 509 is the calendar. Form 4868 is the automatic six month extension of time to file Form 1040 or Form 1040-SR. Form 7004 is the extension form for Form 1065, Form 1120, Form 1120-S and the other business returns listed in the 7004 instructions. Confirm the year's weekday shifts and any disaster relief before you put a date in an email. (Publication 509, Instructions for Form 7004)

• Admin tells the client, in writing, the day after your document date.
• A preparer estimates tax due from what is in the file.
• A CPA decides the filing position and whether you file the extension.
• Payment instructions go out before the original due date.
• The unfinished return sits on an extension board, not in Review.

File Form 4868 by the due date of Form 1040, Form 1040-SR, Form 1040-NR or Form 1040-SS. For most calendar year filers that is the April date in Publication 509. The IRS cannot generally extend filing more than six months (October 15 for most calendar year taxpayers). Out of the country filers and some Form 1040-NR filers have different dates. Read the current Form 4868 before you write those exceptions into a template. (Get an extension to file your tax return)

Form 8878 is the electronic filing signature authorization for Form 4868 or Form 2350. Complete it when Form 4868 is filed with the Practitioner PIN method, or when the taxpayer authorizes the electronic return originator to enter or generate the PIN. Publication 1345 adds that Form 8878 is only needed for Form 4868 when the taxpayer is authorizing an electronic funds withdrawal and wants the ERO to enter the PIN. Keep the signed Form 8878. Do not send it to the IRS unless asked. (About Form 8878, Self-select PIN method for Forms 1040 and 4868)

Use Form 7004 to request an automatic extension of time to file certain business income tax, information and other returns. File it on or before the due date of the return you are extending. Complete it properly, estimate the tax if applicable, and pay tax that is due. No signature is required on Form 7004. The IRS will not send an approval. They notify you only if the request is disallowed. File a separate Form 7004 for each return. (Instructions for Form 7004)

The automatic period is generally six months. Estates (other than bankruptcy estates) and trusts filing Form 1041 get five and a half months. C corporations with tax years ending 30 June and beginning before 1 January 2026 get seven months (six if filing Form 1120-POL). For tax years beginning in 2026 the automatic period is six months. Do not use Form 7004 for Form 1041-A. Use Form 8868. (Instructions for Form 7004)

Partnerships and S corps still need to get K-1s out. Extending the entity return does not give the 1040 client a K-1. Put K-1 delivery on the board as its own row. If you file Form 7004 electronically with an electronic funds withdrawal, Form 8878-A is the PIN authorization for that withdrawal. Receive the signed Form 8878-A before you transmit. Keep it. Do not send it to the IRS unless asked. (About Form 8878-A)

One row per return. Start it the week of your document date, not on 14 April. The tax season workflow already wants extension conversations on the Monday huddle. This is the board behind that question.

Send the day after your document date. A CPA has already said this file will not be complete.

Send once a preparer has a number, and early enough that the client can pay by the original due date.

If you will pull an electronic funds withdrawal on Form 4868 and you will enter the PIN, send Form 8878 with this email and do not transmit until it is signed. (About Form 8878)

After this, chase only the named list. Do not send Email 1 again in August. The document templates cover the nudges. Park the return on the extension board until the list is empty or you call.

Download the extension board. One row per return. Fill dates from Publication 509 for the year you are in, not from memory.

After Email 3, chase only the named list. Park the return on this board until October. If the remaining item is a K-1, the tax season operator can keep that list current and draft the nudges, with your staff approving what goes out.