What makes professors & lecturers different from an ordinary filing?
Many treaties contain a professors-and-teachers article that exempts remuneration for a limited period from arrival — and the period does not restart for a second appointment in the same country. An ordinary preparer applies the general rule and stops there, which is how the relief in the specific provision goes unclaimed.
Can you work with my existing accountant?
That is how most of these engagements run. They keep the domestic file, we take the cross-border piece, and the boundary is agreed in writing so nothing is done twice or missed.
Which return should I file first when two countries tax me?
Usually the one that determines the other. Where one country gives relief for tax paid in the other, the return claiming that relief needs a figure it can rely on, so the source country return is generally prepared first and the residence country return second. That order is not always available. Filing seasons differ, and where the two returns are due close together an extension in one country is often the cleanest way to keep the sequence intact rather than estimate a credit and amend afterwards. Decide the order before the season starts, because it dictates when each set of documents must be ready.
Can I file my home return before the host country slip arrives?
You can, and it frequently creates more work than it saves. Filing on an estimate means either claiming relief for a figure you cannot yet evidence, or omitting it and amending later. Both are recoverable, but the amendment itself can restart an assessment window and invites a question about the original entry. Where the slip is simply late, an extension of time to file is normally preferable to filing something you already know will change. Where the slip will not come at all, because the income was treaty-exempt at source, that absence is part of the position and should be documented rather than worked around.
What do you need from me before either return can be started?
For an academic year that crosses a border: your appointment letter or contract, every payslip and year-end statement from each institution, award letters for grants and their payment records, evidence of your arrival date in the host country, and the residency documents that support where you were and when. If a treaty exemption is being claimed, we also want whatever the university has issued about it, however thin. The arrival date and the appointment terms are the two that hold up files most often, because they decide the exemption period and the split of a part-year.
What happens to my calendar when my exemption period expires mid-year?
That year becomes two periods on one return, and the calendar tightens around it. Remuneration attributable to the exempt part is separated from remuneration attributable to the taxable part, using the appointment terms rather than the pay run dates, and the withholding basis has to change from the expiry date onward. In practice the payroll change is made late and a balance is owing at filing. Knowing the expiry date before the year opens lets the change be made on time, which is the difference between a routine return and an assessment with interest running on it.
How do I plan filings for a sabbatical that crosses two tax years?
Map both countries' tax years against the sabbatical dates before anything else, because a period that feels like one year to you can touch four filing obligations. Then fix the residency conclusion for each segment, since that decides whether a return is a resident return, a part-year return or a non-resident return, and those differ in what they report and when they are due. Only after that does document collection make sense. Working in the other order is what produces a return filed on the wrong basis and a second one filed to correct it.
Do I need to file at all in a year with only grant income?
Often yes. A filing obligation and a tax liability are separate things, and grant income can trigger the first without producing much of the second. Whether the award is remuneration for services or support for a project affects how it is reported, not whether it is reported. Residency matters too: a resident is generally reporting worldwide income regardless of source, and a non-resident may still have to file where the payer withheld. The safest habit is to establish the obligation in each country first and let the calculation follow it.
Which countries have a tax treaty with the United States?
Around sixty, including Canada, the United Kingdom, India, Australia and most of western Europe — but the list matters less than the terms, because each treaty caps rates and allocates income differently. Two countries with treaties can produce opposite answers on the same pension or the same royalty. What decides your position is the specific article covering your income type. See our country guides.
How would a foreign tax authority know I am resident there?
Mostly from information you or your bank already provided. Account-opening forms ask you to self-certify tax residence, and that certification is reported between authorities under the Common Reporting Standard or, for US accounts, under the FATCA framework. Beyond that: employer and payroll filings, property registries, immigration records and the tax filings of anyone who paid you. The realistic planning assumption is that the data arrives. See FATCA and information reporting.
