Who files Form 7004, the company or its owners?
The entity does, for its own return. Form 7004 is the automatic extension for business, partnership, trust and corporate returns, so it belongs to whichever entity is asking for more time, and each entity in a group asks for itself. Owners and partners have their own returns and their own extension routes, and one request made by the parent does not sweep up its subsidiaries or the partnerships beneath it. A frequent failure in a group is not a missed form but a missed entity: everything was extended except the one nobody had on the list.
Does Form 7004 give us more time to pay the tax?
No. The extension protects the filing, not the payment. That distinction does real damage every year, because an entity that believes it has bought itself months discovers that the liability fell due on the original timetable and only the paperwork moved. Treat the extension as separating two dates that used to feel like one: the date the return goes in, which has moved, and the date the liability has to be met, which has not. Where an entity is waiting on overseas figures, we quantify the liability well enough to meet it while the return itself is still open.
Does the extension also cover the forms that go with our return?
Not in every case, and that is the assumption worth testing before you rely on it. The extension protects the filing it was requested for; the information returns that travel alongside a business return do not all follow it automatically. So an entity can be properly extended on its main return and still be late on something that accompanied it, which is a poor outcome because the exposure on those filings does not depend on tax being owed. We list an entity's whole filing set once, mark which items the extension reaches, and keep that list with the calendar.
Our foreign parent closes its books late, can we extend every year?
Routinely, and it is one of the ordinary reasons the extension exists: entities very often need more time because a foreign parent or subsidiary closes its books on a different calendar. What we would not do is treat the extension as the whole answer. In a cross-border group the binding constraint is usually the foreign audit timetable, and that is worth mapping before the season starts rather than discovering each spring. Once the two calendars sit on one page, most groups find that some entities need the extension every year, some occasionally, and some never did.
Do we need to give a reason to get the extension?
The extension is automatic in the sense that it does not depend on persuading anyone that your reason is good enough. What it depends on is the request being made properly and in time, for the right entity and the right return. That shifts the risk from the merits to the mechanics, and the things that go wrong are mechanical: the wrong entity identified, a return type that does not match the entity, or a request made once the time it was meant to extend has already run out. We check those before lodging rather than after.
Can one Form 7004 cover every company in our group?
No. Each entity extends its own return, so a group with corporations, partnerships and a trust inside it has a set of requests to make rather than one. Groups are caught here because the group feels like a single taxpayer internally, with one finance team, one set of books and one closing timetable, while the filing population is a list of separate entities. The practical fix is a schedule of every entity, the return it files, and whether it is being extended this year, kept by the person who closes the books rather than remembered each spring.
Is double taxation legal?
Yes. Nothing prevents two countries from taxing the same income under their own domestic law — each is exercising its own jurisdiction. What treaties and credit systems do is relieve the outcome rather than prohibit the charge, and relief is generally something you must claim on a return or a form, not something applied automatically. Miss the claim and the double charge stands. Double taxation explains the mechanism.
Which country do I pay tax to first?
Generally the source country — where the income arises — taxes first, often by withholding before you receive it. Your country of residence then taxes the same income and credits what the source country took. That order is why timing matters: a residence-country return filed before the source-country tax is settled has nothing to credit yet. Getting the sequence right is most of the work. See international tax planning.
