Do I file Form 4868 if I am waiting on foreign tax slips?
That is the most common reason a cross-border filer needs one. A foreign employer's slips, a foreign assessment, or a business whose books close on a different fiscal calendar can all arrive after the US return is due, and none of them is a reason the return can simply wait. The extension is what makes the later filing date the correct one. What it does not do is postpone payment, so we build an estimate from the interim figures we do have and submit it with the request. When the foreign documents arrive, the return is completed against them and the estimate is reconciled. The full treatment is on the Form 4868 page.
Does Form 4868 give me more time to pay what I owe?
No, and the difference is where most of the cost on these files comes from. It extends the time to file the return. It does nothing to the date the balance was due. Interest, and where applicable penalties, run on an unpaid balance from the original due date even when the extension itself is perfectly valid. That is why the estimate submitted with the request matters: it is the figure you pay against, and paying it is a separate act from filing the extension. A filer who sends the request, pays nothing, and assumes both halves are covered is the one who hears about it later, by notice.
I live outside the US — do I still file Form 4868?
Living outside the United States does not end the US individual return, so the question is only whether you need longer to complete it. In practice most cross-border filers do, because the documents the return depends on — a foreign assessment, foreign employment slips, a foreign company's accounts — are produced on their own country's timetable, not the US one. The extension is the instrument that matches those two calendars. There is more than one extension route open to filers whose tax home is abroad, and they are not interchangeable, so we establish which one fits the facts before anything is transmitted. The payment position is dealt with separately in every case.
Does a federal extension cover my state return as well?
Treat them as two questions. Form 4868 is a federal request and it governs the federal return. State filing obligations are set by each state, and each state decides for itself how an extension is obtained and what it covers. So a filer who has a federal extension in hand may still have a state return sitting on its original footing, which is exactly how a year that felt handled produces a state notice later. When we take on a return we list the states in play from the facts — where you lived, where you worked, where property is held — and confirm each one's own requirement before relying on the federal request for any of it.
Do I need Form 4868 if I am getting a refund?
The interest exposure that makes the form urgent comes from an unpaid balance, so a filer who genuinely owes nothing has less at stake. The difficulty is that very few cross-border filers know which of the two they are until the return is substantially finished. A foreign tax credit that turns out smaller than expected, or income no employer withheld against, can move a position from refund to balance owing. Filing the request removes the consequence of being wrong about which one you are, and it keeps the later filing date correct. We would rather have it in place and discover the refund than the other way round.
What happens if my estimate on Form 4868 is wrong?
The estimate is not a formality. It is the figure the extension is judged against and the figure you pay to, so how it was arrived at becomes the question if the balance later turns out materially different. For a cross-border filer the estimate is usually built on interim foreign figures — a payslip run, draft accounts, a prior year's assessment adjusted for what has changed — and the useful discipline is to record that working at the time rather than reconstruct it afterwards. We keep the basis of the estimate on file with the request. When the final documents arrive the difference is paid or reclaimed on the return, and the reasoning behind the original figure is already written down.
Can I avoid capital gains tax on a foreign property?
Not by virtue of it being foreign — there is no exemption for that, and the "keep it offshore" advice you may have read is how people acquire penalties rather than savings. What genuinely reduces the gain is ordinary and legitimate: principal residence relief where the property qualifies and the designation is made correctly, a properly built cost base including acquisition costs and capital improvements, the timing of the disposition, the treaty rules for real property, and credit for the foreign tax paid. See principal residence and foreign property.
Is "fund transfer pricing" the same thing as transfer pricing?
No — and if you came here to calculate FTP, this is not it. Fund transfer pricing is a bank's internal allocation of funding costs and benefits between its own business units, a treasury and asset-liability management discipline used to measure branch or product profitability. Tax transfer pricing is about prices between legally separate related parties across borders, and about which country taxes the resulting profit. The words overlap; the fields do not. See our transfer pricing work.
