Fill IRS Form 7004 (business tax extension) online — free
Form 7004 asks the IRS for an automatic extension of time to file certain business income-tax, information, and other returns — including partnership (1065), C- and S-corporation (1120, 1120-S), and many estate and trust returns. It generally buys about six months. Important: it extends the time to FILE, not the time to PAY — you still estimate and pay any tax due by the original deadline. Bring the blank IRS PDF (linked below); AttachKit auto-fills the common fields — your business name and address — from your saved profile, on your device. You enter the form code for the return you're extending and any tax estimate, then file. AttachKit does not submit the form to the IRS and does not give tax advice.
Your PDF never leaves your browser — open DevTools → Network and watch: the file is never uploaded.
Who needs it: Businesses and entities that need more time to file — partnerships, multi-member LLCs, C and S corporations, and many estates and trusts. (Sole proprietors filing Schedule C on a personal Form 1040 use Form 4868 instead — see /fill/4868.)
Need a blank Form 7004? Download from the source, then drop it in below.
Save your name, address, and other common fields once. Then open the blank Form 7004 in the form filler below — AttachKit maps what it can from your saved profile, right in your browser with nothing uploaded.
Set up profile →Why fill it here
- Auto-fill your business name + address on-device from your saved profile — nothing uploaded.
- Form-specific entries — the form code for the return you're extending (Part I) and any tentative tax (Part II) — stay yours to enter and review.
- Free to fill; download a clean PDF to e-file through a provider or mail to the IRS yourself.
- Free to fill unlimited forms (10 signed PDFs/mo on the free tier).
Fill your Form 7004 now
Form 7004 questions, answered
General information, not legal or tax advice
This page is general information about a commonly-used tax form. Tax law is complex and fact-specific — for advice on your return, consult a CPA, enrolled agent, or tax attorney. AttachKit fills the PDF; the IRS holds you responsible for what's on it.
- Does Form 7004 extend the time to pay?
- No — it only extends the time to file. You must still estimate and pay any tax owed by the original due date to avoid interest and penalties. AttachKit helps you fill the form; it doesn't calculate your tax.
- Which form code goes on line 1?
- Part I asks for the form code of the return you're extending (for example 1065, 1120, and 1120-S each have a code listed in the Form 7004 instructions). Enter the code for your specific return — AttachKit doesn't choose it for you. See the IRS Instructions for Form 7004.
- 7004 or 4868 — which extension is mine?
- Form 7004 is for business and entity returns (partnerships, corporations, many estates and trusts). Form 4868 is for individuals filing a personal Form 1040, including sole proprietors with Schedule C. See /fill/4868 for the personal extension.
- Does AttachKit file the extension for me?
- No. AttachKit fills the form in your browser and gives you a PDF. You e-file it through a provider or mail it to the IRS yourself; your data and the PDF never leave your device.
More forms: Form 941 · Form 1040 · Form 2553 · Form 2848 · Form 4868 · Browse all 113 forms →
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AttachKit is a private, independent tool for filling and signing PDFs on your own device. It is not a government agency, law firm, or filing service, and is not affiliated with or endorsed by the IRS, USCIS, the U.S. Department of State, or any government body. Forms are provided for convenience — always download the current version and instructions from the official .gov website, and your completed document never leaves your browser.