Self-employment Tax: Even though the Canadian company doesn't issue a 1099,you are still responsible for reporting all your income, including this, on your US tax return.
The IRS requires a flat 30% withholding on ALL types of payments to foreign national individuals UNLESS: The individual has a U.S. tax identification number (SSN or ITIN) and qualifies for a tax reduction under the tax treaty between the U.S. and their country of tax residency.
Exemption from withholding To qualify for this exempt status, the employee must have had no tax liability for the previous year and must expect to have no tax liability for the current year. A Form W-4 claiming exemption from withholding is valid for only the calendar year in which it's furnished to the employer.
All persons ('withholding agents') making US-source fixed, determinable, annual, or periodical (FDAP) payments to foreign persons generally must report and withhold 30% of the gross US-source FDAP payments, such as dividends, interest, royalties, etc.
Payments to a foreign corporation in exchange for personal services performed in the US by either a US citizen or alien is considered to be US-sourced income and is usually subject to withholding. (Can be wages or self-employment income.)
While this opens doors to diverse talent and skill sets, it also introduces unique challenges in terms of tax compliance. One critical aspect of this compliance involves Form 1099, which US-based businesses may need to issue to foreign contractors for reporting payments made during the tax year.
If you're a sole-proprietor, self-employed or a certain type of partnership, you must fill out your T1 General, that's your standard personal income tax return. You must also complete a separate T2125 “Statement of Business or Professional Activities”. This is where you specify: Business and professional income earned.
Today, it's possible to hire independent contractors from any part of the world, thanks to improvements in technology and communications. It's a great idea to consider Mexico if you're looking to expand your team. Its proximity and strong economic ties to the US are definite advantages.