Employment income — the treaty article: where does doing it myself start to cost money?
Some of it, yes — and we will say so on the call if that is the honest answer. The parts that are worth paying for are the ones where a missed election, a missed deadline or an unverified threshold costs more than the fee: where the conditions fail, host-country tax applies to the income for the days worked there, with credit in the home country.
What if I have already filed and got it wrong?
That is a common starting point. We re-derive the position, identify whether an amendment or a disclosure route is the right vehicle, and tell you which one preserves the relief that is still available. The order matters more than the speed.
How long will it take?
It depends on the documents rather than on us. Once the pack is complete most filings turn around inside a fortnight; anything that needs a certificate from a tax authority runs on that authority's timetable, which we tell you at the start rather than at the end.
Do weekends and travel days count towards the treaty day count?
The employment article counts physical presence, not workdays, so a day you were in the country counts whether or not you worked on it. Weekends spent there, arrival and departure days, public holidays and days of sickness generally fall inside the count. That is the single most common reason an assignment that looked comfortably inside the limit turns out to be over it: the assignment was planned on working days, and the employee spent most weekends in the host country rather than flying home. Count from travel records, not from a project calendar.
Does it matter which entity actually bears the cost of my salary?
It is one of the conditions, and it fails quietly. The exemption generally requires that the remuneration is not borne by an employer resident in the host country, nor by a permanent establishment there. A recharge of your salary cost to the host entity can break that, even if your contract of employment never changes and even if nobody involved thought of it as a tax decision. Because the recharge is usually made in the intercompany accounts long after the assignment is agreed, the finance team creating it and the person relying on the exemption are rarely the same people.
If the treaty exempts me, does my employer still have to withhold?
Frequently yes. Exemption from host-country tax under the treaty and the employer's payroll obligation in that country are decided under different rules, and one does not follow from the other. A host country may require registration, withholding or reporting for an employee whose income it has agreed not to tax, sometimes with a relief application that has to be made and granted before withholding can be reduced. So an exempt employee can still put an employer into a payroll obligation it did not know it had, and the penalty for missing that sits with the employer rather than the employee.
Does the treaty exemption cover social security contributions as well?
No. The tax treaty deals with tax. Social security liability is settled under its own set of rules and its own agreements between countries, and it is entirely possible to be exempt from host-country income tax on an assignment while contributions remain payable somewhere, or become payable in a second country at the same time. The two questions need to be asked separately and at the same time, because the answers can point in opposite directions and the contribution cost is often the larger of the two on a short assignment.
What happens if I go over the day limit part-way through an assignment?
The exemption is lost for the income relating to the days worked in the host country, and it is generally not lost only from the day you crossed the line. The host country then taxes that income, and the home country gives credit for the tax paid, so the total is usually not double tax but it is more tax, later, with two filings instead of one. The practical damage is administrative: withholding that should have been running from the start was not, and the correction has to be made for a period already closed in payroll.
How do I claim credit at home for tax the host country charged?
Through the home country's own return, on the income the host country was entitled to tax under the treaty. Two things decide whether it works cleanly. The income has to be identified consistently in both returns, which means agreeing how the salary is apportioned to host-country working days before either return is prepared rather than afterwards. And the credit is limited by reference to the home country's tax on that same income, so where the host country has taxed something it was not entitled to tax, the answer is a claim in that country rather than a larger credit at home.
How do I claim tax treaty benefits?
Two moments, and the earlier one matters more. Before a payment is made, you give the payer a declaration so they withhold at the treaty rate rather than the domestic one — a W-8BEN for a US payer, an NR301 for a Canadian payer, a residency certificate and Form 10F for an Indian one. After the year ends, you claim the position on a return, and the United States often wants it disclosed there in its own right. Claiming late means asking for a refund instead. See NR301 declarations.
Is a tax treaty the same thing as a totalization agreement?
No, and being covered by one says nothing about the other. An income tax treaty deals with income tax. A totalization or social security agreement deals with contributions — which country's social security system you pay into while working abroad, and how periods in two systems combine for benefit eligibility. Canada and the United States have both; plenty of country pairs have one and not the other. See totalization agreements.
