Form 7004 is the IRS extension form for most business returns, including the pro-forma 1120 that accompanies Form 5472 for a foreign-owned disregarded LLC. It buys you six months. It is not complicated. It is also not a silver bullet — plenty of real deadlines are not extendable by it, and a 7004 filed on the wrong day is useless.
This guide walks through everything a non-US founder needs to know about Form 7004: when to use it, how to file it, the small print, and what to actually do with the extension once you have it.
What Form 7004 does
Form 7004 is an “application for an automatic extension of time to file certain business income tax returns, information returns, and other returns”. Three keywords matter in that sentence:
- Automatic. You do not have to justify the extension. If you file 7004 correctly and on time, the extension is granted; there is no approval letter and no waiting. The absence of a reply is the reply.
- Time to file. It extends the deadline to file the return. It does not extend the deadline to pay any tax owed. For a pro-forma 1120 attached to a 5472, there is typically no tax to pay — the whole package is an information filing — so in practice this distinction does not bite most of our customers. But if you are an LLC that elected C-corp taxation, and you owe estimated tax, that estimated tax is still due at the original filing deadline.
- Six months. The extension is specifically six months. A calendar-year 15 April filing moves to 15 October. There is no further automatic extension available.
When Form 7004 is the right call
A 7004 is a tool, not a reflex. Reach for it when at least one of these is true.
Your statements are not ready
Banks occasionally delay year-end statements, especially for accounts that closed mid-year or for accounts at smaller institutions. If you are coming up on 15 April and a Wise statement from November is still missing, filing on an incomplete statement set is worse than filing the extension. The six months buys the statement.
A borderline transaction needs an EA/CPA call
Some transactions do not fit cleanly into the 5472 categories. The owner transfers a laptop into the LLC for business use — is that a capital contribution of property, or a loan? The owner pays a US-sourced marketing invoice from a personal card — is that a reimbursement, a capital contribution, or an owner-paid expense? These calls affect the totals on the 5472 and sometimes have multi-year consequences. A 7004 gives you time to speak with a credentialed professional and get it right.
You are in physical motion on the deadline week
An IRS filing is not something to e-sign from a train. Travel, moves, visa appointments, caregiving duties — many entirely normal reasons mean the week of 10–15 April is simply not the week to concentrate on a tax filing. The extension is a legitimate tool for that.
You just learned you have a 5472 obligation
If today you discovered you should have been filing 5472 for several years, the first conversation is “late / catch-up filing” — Form 7004 does not retroactively save you. But for the current year, if you can get a 7004 out before 15 April, you buy a clean slate for the current year while the prior-year work proceeds in parallel.
When Form 7004 will not help you
Three fact patterns are worth calling out explicitly because people hope for them anyway.
You missed the original deadline
Form 7004 must be filed on or before the original due date of the return it extends. A 7004 filed on 16 April does not retroactively extend the 15 April deadline — the return is already late, and the 7004 does nothing. BorderFile locks new 7004 purchases once the original date has passed so we do not sell you a product that cannot work.
You owe money
As noted above, 7004 extends time to file, not time to pay. For a pro-forma 1120 on a disregarded entity this is usually moot. For a C-corp 1120, or a 1120-F for a foreign corporation with ECI, estimated tax is still due at the original date and interest accrues from that date forward on any underpayment.
Your filing is somehow stuck
The 7004 is a routine administrative filing. It does not resolve an IRS notice, an EIN mismatch, a prior-year 5472 non-filing, or an audit letter. If one of those is in play, you need the expert desk, not an extension.
How to file Form 7004
Mechanically, Form 7004 is one page.
1. Identify the return being extended
The form has a numeric list of return types. For a pro-forma 1120 attached to a 5472 for a disregarded entity, the code is 12 (Form 1120). That tells the IRS what return you are extending and what deadline rules apply.
2. Identify the taxpayer
Legal name, EIN, address. Same values as the pro-forma 1120 itself. If your pro-forma 1120 uses the registered-agent address, the 7004 should too — consistency across the filings matters.
3. Tax year
The year you are extending. For a calendar-year LLC that is the full calendar year.
4. Payment lines
Fill in zero for a zero-income disregarded LLC. For a real 1120 with estimated tax owing, fill in the estimated tax paid or being paid with this filing.
5. Transmit
For the 5472 / pro-forma 1120 combination the IRS wants fax or mail transmission. The IRS fax number for 7004 is published in the current year’s 7004 instructions. BorderFile uses the current-season number by default; self-filers should always verify the fax number before dialling.
6. Keep the confirmation
The fax confirmation page is your proof the extension went in on time. Keep it. If the IRS later queries whether you filed timely, the confirmation page is the entire case.
What to do with the extension
The worst thing you can do with a 7004 is nothing. The six months disappears fast. Our recommended cadence:
- Weeks 0–2. Chase missing statements. Confirm the current-year EIN letter is on file. Resolve any legal-name mismatches.
- Weeks 2–6. Statement intake and transaction tagging. Confirm with the owner on any “unclear” tags.
- Weeks 6–10. Reviewer runs the checklist. The reviewer loop usually goes 1–2 rounds.
- Weeks 10–14. EA/CPA review. One pass if the reviewer did their job; two passes occasionally.
- Weeks 14–20. You sign; we fax; confirmation stored.
- Buffer. The last three weeks are deliberately empty. Deadlines slip; buffers are what keep slip from becoming miss.
If you push the extension to the final week of September and discover a surprise, you are back in the same spot you were in April — only now there is no further extension available.
Form 7004 and the state side
Form 7004 is federal. State deadlines run on their own calendars. In particular:
- Delaware LLC annual tax is due 1 June regardless of any federal extension. If your federal filing is on a 7004 to 15 October, your Delaware filing is still due 1 June. These are independent duties.
- Delaware franchise tax + annual report is due 1 March for corporations; again, independent of federal 7004.
- Home-country filings (India Schedule FA, UK self-assessment with foreign-ownership disclosure, etc.) have their own calendars, usually anchored to the home country’s income-tax year rather than the US tax year.
The compliance calendar in the BorderFile dashboard shows every one of these next to the extended federal deadline so you do not accidentally let a state or home-country deadline slip while you focus on the federal one.
When to buy the extension vs. just file on time
If you can file cleanly by 15 April, file. The extension does not “look” bad to the IRS — plenty of healthy businesses extend every year — but it is not free: it is one more filing to track, one more deadline in your calendar, one more thing to remember six months from now. A clean on-time filing closes the year.
If you cannot file cleanly by 15 April, buy the extension. A rushed, imprecise 5472 is a worse outcome than an extended, careful one. The IRS does not reward speed on an information filing.
In one sentence
Form 7004 is a straightforward, free, automatic six-month extension for your federal filing; file it on time, use the time, do not let it lull you into missing state deadlines, and keep the fax confirmation forever.
Questions on a specific 7004 situation? Email support@borderfile.io.