How Much Does a Cross-Border Tax Return Cost?

A cross-border return between Canada and the US costs more than a domestic return in either country, and the gap is wider than most people expect. The complexity comes from filing in two countries, coordinating the foreign tax credit between them, handling information returns (FBAR, Form 8938, T1135, potentially Form 3520), and applying treaty provisions that domestic returns never touch. The price depends on the number of forms, the type of income, and the firm’s billing model.

What drives the cost of a cross-border return?

The price is driven by the number of forms, the complexity of the income, and the coordination between the two returns.

Number of forms. A basic cross-border filing includes a Canadian T1 and a US Form 1040 (or 1040-NR). Add Form 1116 (foreign tax credit), FBAR, Form 8938 (if thresholds are met), and T1135 (if foreign property exceeds $100,000 CAD). Each additional form adds preparation time and review time. More complex filings add Form 3520 (foreign trust), Form 3520-A, Form 8621 (PFIC), Form 5471 (controlled foreign corporation), Form 8865 (foreign partnership), state returns, and provincial returns. A filing with 15 forms takes longer than one with 6.

Type of income. Employment income with a W-2 and a T4 is the simplest cross-border scenario. Self-employment income adds Schedule C or T2125, plus the self-employment tax and CPP interaction. Rental income adds Schedule E and the Canadian T776, plus potentially NR6/section 216. Stock options add the treaty allocation calculation. Capital gains add the inclusion-rate comparison and potentially FIRPTA withholding. Each income type multiplies the work.

Foreign tax credit coordination. The Form 1116 calculation requires computing the limitation fraction (foreign-source income over worldwide income), applying it to the US tax, and comparing the result to the Canadian tax paid. The Canadian T2209 does the mirror calculation. If the CRA reassesses the Canadian return, the US return may need a redetermination under IRC 905(c). This back-and-forth is the single largest source of professional time in a cross-border engagement.

Treaty positions. If the return takes a position under the Canada-US treaty (the Article XVIII pension exemption, the tie-breaker, or any other provision), Form 8833 must be prepared and attached. Treaty work requires knowledge of both countries’ tax law plus the treaty itself, which is a narrower skill set than domestic preparation.

What are the typical price ranges?

These ranges are for specialized cross-border firms. Domestic-only firms and DIY software are cheaper, but they typically cannot handle the cross-border coordination.

Filing complexity	Typical range
Simple employment income, T1 + 1040 + FBAR + 1116	$2,000 to $3,500
Employment + investment income, T1 + 1040 + FBAR + 8938 + 1116 + T1135	$3,000 to $5,000
Self-employment or rental income, both countries	$4,000 to $7,000
Business income, stock options, or trust reporting	$5,000 to $10,000
Corporate structures (Form 5471, T2, intercompany pricing)	$8,000 to $15,000+
Catch-up filing (streamlined, multiple years)	$5,000 to $20,000+ (depends on years and complexity)

These ranges reflect the cost for both returns combined, not each one separately. A firm that quotes “$1,500 for the US return” is quoting half the engagement; the Canadian return and the FTC coordination are additional.

Why is it more expensive than a domestic return?

A domestic US return for a salaried employee (1040 + standard deduction) costs $200 to $500 at most firms. A domestic Canadian T1 for employment income costs $100 to $300. The cross-border premium exists because:

1. Two returns, not one. The firm prepares and reviews both a T1 and a 1040. Even if the income is identical, the forms are different, the software is different, and the deadlines are different.

2. The FTC links the two returns. The Canadian tax paid determines the US credit, and vice versa. The two returns cannot be prepared independently; each one’s output is the other one’s input.

3. Information returns. A domestic filer with a bank account does not file FBAR or Form 8938. A cross-border filer with a Canadian bank account, RRSP, and TFSA may file FBAR, Form 8938, Form 3520, and T1135. Each form has its own rules, thresholds, and penalties.

4. Specialist knowledge. The firm needs professionals who are licensed or knowledgeable in both countries’ tax law, the treaty, and the interaction between them. This is a smaller talent pool than domestic-only preparers, and the market prices accordingly.

5. Review and quality control. A cross-border return that gets the FTC wrong, misclassifies a TFSA, or omits an information return can trigger penalties that exceed the cost of the return itself. The review process is more intensive because the error surface is larger.

Can I use TurboTax or other DIY software?

For the domestic return in each country, yes. TurboTax handles US returns, and Wealthsimple Tax (or similar) handles Canadian returns. The problem is the coordination: neither software computes the FTC for the other country’s return, neither generates Form 8833, and neither checks whether the treaty position on one return is consistent with the position on the other.

A DIY approach can work for a truly simple filing (employment income only, no investments, no rental, no trust reporting), where the FTC is a straightforward calculation and no treaty positions are taken. For anything more complex, the risk of error usually exceeds the cost savings.

What questions should I ask before hiring?

Before engaging a firm for cross-border preparation:

1. Are you licensed or experienced in both countries? A US CPA who does not prepare Canadian returns (or vice versa) can only handle half the engagement. You want a firm that prepares both returns and coordinates the FTC.

2. Do you handle the information returns? FBAR, Form 8938, T1135, and Form 3520 are part of the cross-border filing stack. Some firms exclude them from the base fee and charge separately. Know what is included.

3. How do you handle CRA reassessments? A CRA reassessment that changes the Canadian tax paid triggers a US redetermination. Does the firm track this and amend the US return, or is that a separate engagement?

4. What is the fee structure? Fixed fee, hourly, or value-based? If hourly, what is the estimated range? If fixed, what is included and what is extra?

5. Do you file on extension? Most cross-border firms file the US return on extension (October 15) to wait for the Canadian notice of assessment. If a firm files the US return before the Canadian return is assessed, ask how they handle the redetermination if the Canadian tax changes.

What should I do next?

Get a quote from a specialist firm before the filing season starts. The best cross-border firms fill up by February, and a late engagement means rushed work or missed deadlines. Provide the firm with your prior-year returns from both countries, your information slips (T4, W-2, NR4, T5, 1099), and a list of your foreign accounts. The more organized the package, the lower the cost.

• Filing deadlines for cross-border returns, the full calendar
• What does the streamlined procedure cost?, if you are catching up on unfiled years
• Cross-border tax accountant by city, finding a specialist in your area
• Cross-border charitable donations, when cross-border giving adds Schedule 9 or Schedule A complexity
• Gambling winnings cross-border, recovering US casino withholding on Form 1040-NR

This guide is general information, not tax advice for your specific situation. Which points apply, and how, depends on your facts.