Can I apply for a regulation 105 waiver after I am paid?
No. The waiver is prospective. It has to be applied for before the fee is paid, because it tells the payer to release the money without withholding, or with less of it. Once the payment has gone through with tax deducted, the waiver route is closed for that fee. What remains is the return route. The non-resident files a Canadian return for the year, reports the Canadian-source fee, deducts the costs of earning it and recovers the difference between the tax on the net amount and the tax already withheld. It works, but the money sits with the CRA in the meantime.
Why is Canadian tax withheld on my whole fee, not my profit?
Because withholding on fees for services rendered in Canada is computed on gross fees. It is a payment on account collected at source, and at that moment nobody has seen your travel, subcontractor, equipment or staff costs. For work with real costs behind it, the amount withheld routinely exceeds the eventual Canadian tax by a multiple. That gap is not a penalty and it is not lost, but it is recovered in only one of two ways. A waiver obtained before the fee is paid, or a Canadian return filed for the year reporting the income net of what it cost to earn.
What is the difference between a treaty waiver and an expense waiver?
They ask for relief on different grounds. A treaty-basis waiver argues that the treaty prevents Canada taxing the fee at all, so no withholding is appropriate. An income-and-expense basis waiver accepts that Canada may tax the work but shows that the costs of earning the fee leave little or no Canadian tax to collect, so the withholding should be reduced to something closer to the real liability. Which one fits depends on the contract, where the work is performed and what the costs actually are. Both must be applied for before the fee is paid.
My Canadian client withheld tax, must I file a Canadian return?
If you want the excess back, yes. Without a waiver, the money is recovered only by filing a Canadian return for the year in which the fee was earned. The return reports the Canadian-source income, claims the costs of earning it, and settles the actual liability against the tax already withheld. If no return is filed, the withholding simply stands as the final Canadian tax on a gross amount, which is almost always more than the correct figure. This is also why the year of the engagement matters. The return follows the fee, not the invoice date.
We are engaging a foreign consultant in Canada, is the waiver ours?
The application is the non-resident's, but the exposure is yours. As payer you are the one required to withhold from the fee, and you are the one assessed if you release the money without a waiver in hand. In practice the two sides have to be coordinated. The consultant applies, the payer holds the payment until the outcome is known, and the contract says which of you carries the cost if no waiver is granted. Agreeing that before the assignment starts avoids the common ending, where the invoice is paid gross and both parties argue about a deduction afterwards.
No waiver was obtained, how do we get the withheld money back?
By filing. A Canadian return for the year reports the fee, deducts what it genuinely cost to earn, such as travel, subcontractors, staff time in Canada and equipment, and produces the real Canadian liability, against which the tax already withheld is credited. The difference is refunded. The work is in the evidence rather than the form. Costs have to be attributable to the Canadian engagement and supported, which is much easier if the records were kept with this in mind during the assignment. Where several years were withheld and never claimed, each year is filed separately.
Which kind of investor income is most exposed to double taxation?
Dividends from a foreign corporation. They have already borne corporate tax, the source country withholds on payment, and your residence country taxes the receipt — three layers, only two of which a credit can reach. Interest and royalties carry the same source withholding without the corporate layer. This is why the withholding article and the paperwork that reduces it matter more for portfolio income than for salary. See dividends, interest and royalties articles.
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.
