Canadian Developer Gets ITIN for U.S. Tax Compliance and Treaty Benefits

Problem

Marcus contracted with two U.S. software companies as an independent developer. At year end, he received Form 1042-S showing U.S.-source income. His Canadian accountant confirmed he needed to file a U.S. non-resident return (1040-NR) to document his treaty position and get a formal record with the IRS — but he had no ITIN to file under.

Approach

We prepared Marcus's W-7 application for the 1040-NR filing exception. We certified his Canadian passport as a CAA and attached the tax return as required. The complete package was submitted to the IRS Austin Service Center.

Outcomes

• ITIN issued in 13 weeks
• 1040-NR filed claiming Canada–U.S. treaty exemption
• U.S. income properly reported with zero U.S. tax liability
• 1042-S income reconciled — no IRS follow-up
• ITIN valid for future years of U.S. contract work

When a Canadian Receives U.S. Income

Canada and the United States share one of the most comprehensive bilateral tax treaties in the world. For most Canadian residents earning business income from U.S. sources — without a U.S. office or fixed place of business — the treaty eliminates U.S. tax entirely. The income is taxed only in Canada.

But "no U.S. tax" doesn't always mean "no U.S. filing." When a U.S. company issues a 1042-S to a foreign contractor, the IRS has a record of that income. Filing a 1040-NR — even a zero-tax return claiming the treaty — creates a paper trail that protects the contractor and satisfies any IRS inquiry.

The 1042-S and Why It Matters

Form 1042-S is the U.S. information return that American companies use to report payments to foreign persons. If you receive one, the IRS already knows about your U.S.-source income. Filing a 1040-NR with your ITIN formally claims the treaty position and closes the loop.

Without an ITIN, you cannot file a 1040-NR. Without a 1040-NR, the 1042-S income sits unreconciled in IRS records — which can trigger notices, inquiries, or backup withholding issues in future years.

The W-7 Filing Process

To obtain an ITIN for a 1040-NR filing, the W-7 application must be submitted together with the tax return. ITINSERVICES prepared both documents for Marcus — the W-7 as the primary ITIN application, and the 1040-NR as the required attachment.

As a Certifying Acceptance Agent, we certified Marcus's Canadian passport ourselves. He didn't need to visit a U.S. consulate or mail his original passport to the IRS. The complete package was mailed to the IRS Austin processing center.

Outcome

Marcus received his ITIN 13 weeks after submission. His 1040-NR was processed, correctly reflecting zero U.S. tax liability under the Canada–U.S. treaty. His U.S. clients updated their records with his ITIN, and his future payments were made without any withholding.

For Canadian developers, consultants, and contractors working with U.S. companies, this process is straightforward — but the timing matters. ITINs can take 11–14 weeks, so applying before tax season is essential.