Form 1040-NR Is How Canadian Casino Winners Get Withheld Tax Back
Form 1040-NR — the U.S. Nonresident Alien Income Tax Return — is the filing that lets Canadian casino winners recover some or all of the 30% the IRS withheld from their gambling winnings. There is no other way to claim that money back. The IRS does not return it automatically, and holding on to your Form 1042-S without filing accomplishes nothing.
At U.S. Tax Recovery, we prepare and file Form 1040-NR on behalf of our Canadian clients, making sure every figure reconciles, every treaty citation is correct, and every document is in order before the return goes out.
KEY TAKEAWAYS
- Form 1040-NR is the U.S. nonresident return — the only filing that can generate a gambling tax refund for Canadians.
- Article XXII(3) of the Canada–U.S. Tax Treaty allows Canadians to deduct documented U.S. gambling losses against U.S. winnings in the same year.
- A valid ITIN must appear on the return before the IRS will process it — Canadians cannot use a Social Insurance Number.
- The refund claim window is generally three years from the original filing deadline for the tax year in question.
What Is Form 1040-NR and Who Has to File It?
Form 1040-NR is the U.S. tax return for nonresident aliens — anyone who is not a U.S. citizen or permanent resident but has U.S.-source income. For Canadian casino winners, that income is the gambling winnings the casino reported on Form 1042-S.
You file a 1040-NR to report those winnings, apply any losses you can document, calculate what you actually owe, and claim back the difference between that amount and the 30% already withheld. If your documented losses reduce your taxable winnings significantly — or to zero — the refund can be substantial.
This is not the same as a Canadian T1 return, and the rules are different in ways that matter. Electronic filing is not available for these returns. They must be mailed to the correct IRS processing centre, and the IRS processes them on a separate timeline from domestic returns.
What Documents Do You Need Before You File?
Getting the right documents together before you prepare the return saves time and reduces the risk of IRS correspondence later. The core documents are straightforward, but each one has to be correct.
Form 1042-S From the Casino
This is the withholding document the casino issues to nonresident winners. It shows the gross amount won and the 30% withheld. Every 1042-S you received for the tax year must be included — if you had multiple jackpots at different properties, you need a form from each one. The figures on your 1040-NR must match these forms exactly. To understand what each field on the form means, our guide to Form 1042-S for Canadian casino winners walks through it in detail.
A Valid ITIN
The IRS requires a taxpayer identification number on every return it processes. Canadians are not eligible for a U.S. Social Security Number, so an Individual Taxpayer Identification Number (ITIN) is required. If you do not have one, you apply using Form W-7, which is typically submitted alongside your 1040-NR as a single package.
If you have an existing ITIN from a prior filing, confirm it has not expired. ITINs that have not appeared on a U.S. return for three consecutive tax years are deactivated, and filing with a deactivated ITIN causes the IRS to hold your return until it is renewed.
Win-Loss Statement From the Casino
This is what supports your loss deduction under Article XXII(3) of the Canada–U.S. Tax Treaty. The statement summarises your tracked gambling activity for the full year at a given property. If you visited more than one U.S. casino during the year, you need a statement from each one. Losses from sessions you played without a rewards card will not appear on the statement and generally cannot be claimed. Our article on using a casino win-loss statement on your return explains how to request one and apply it correctly.
How the Canada–U.S. Tax Treaty Reduces What You Owe
Canadians are not exempt from U.S. gambling tax. What the treaty provides is something more practical: the ability to offset documented gambling losses against winnings from the same tax year.
Article XXII(3) of the Canada–U.S. Tax Treaty grants Canadian residents the same loss-deduction treatment as U.S. residents when it comes to gambling. That means if you lost money at U.S. casinos during the same year you had a jackpot withheld, those losses can reduce your taxable winnings — and therefore reduce the tax you actually owe. If your documented losses meet or exceed your winnings, your taxable amount could drop to zero, making a full refund of the withheld tax possible depending on your records.
This benefit is never applied automatically. It must be cited correctly on the 1040-NR, with the article referenced precisely and the supporting documentation attached.
Withholding Thresholds at a Glance
Not every casino win triggers withholding. The IRS applies the 30% rate when a payout crosses specific thresholds by game type.
| Game Type | Withholding Threshold |
|---|---|
| Slot machines | $1,200 or more from a single jackpot |
| Keno | $1,500 or more |
| Poker tournaments | More than $5,000 |
| Blackjack, baccarat, craps, roulette | Generally no automatic withholding |
When a win crosses the applicable threshold, the casino issues Form 1042-S — not Form W-2G, which is the document used for U.S. residents. Receiving a W-2G when you should have received a 1042-S is worth correcting before you file, since the IRS expects the two forms to match.
Why Filing This Return Alone Is More Complex Than It Looks
The 1040-NR is not a long form, but preparing it correctly for a gambling refund claim requires more than filling in the boxes. The treaty article must be cited precisely. Every figure must reconcile with your 1042-S. The loss documentation must be applied within the limits Article XXII(3) permits — losses can offset winnings, but they cannot create a net negative gambling income figure. And the completed package must be mailed to the correct IRS address, since electronic filing is not an option.
A name that does not exactly match your ITIN records, a missing certification, or an incorrect treaty citation can result in months of additional processing time. As an IRS Certified Acceptance Agent, we verify your passport in our office — so you keep your original document and never have to mail it to the IRS. You can review our complete refund process from start to finish to see how each step fits together.
The Three-Year Claim Window
The refund claim window is generally three years from the original filing deadline for the tax year in which your winnings were withheld. Once that window closes, the IRS keeps the withheld amount permanently — there is no appeal and no extension.
IRS processing of nonresident gambling refund returns typically takes many months from the date the IRS receives a complete return. Filing close to the three-year deadline leaves no margin for errors or IRS correspondence. The earlier you act, the more time you have to resolve any issues without losing eligibility.
Frequently Asked Questions
Can I file Form 1040-NR electronically from Canada?
No. The IRS does not allow electronic filing for nonresident gambling refund returns. The completed 1040-NR, along with any W-7 application and supporting documents, must be mailed to the IRS. This is one reason the overall timeline runs longer than most filers expect — mail transit and IRS intake add time before processing even begins.
Do I need to file a separate 1040-NR for each casino visit?
No. All U.S. gambling winnings and losses for a given tax year are reported on a single Form 1040-NR for that year. If you received multiple 1042-S forms from different casinos in the same year, all of them are combined on the one return. Each tax year with withholding requires its own separate return filed individually.
What if I filed a 1040-NR in a prior year — do I need a new ITIN?
No, your existing ITIN number stays the same. However, you need to confirm it is still active. ITINs are deactivated after three consecutive years without appearing on a U.S. return. If yours has lapsed, a renewal application using Form W-7 is required before the IRS will process your new return.
Have a Form 1042-S? Let’s File Your 1040-NR and Recover What You’re Owed.
If a U.S. casino withheld 30% of your gambling winnings, you may be entitled to recover some or all of that amount by filing Form 1040-NR. U.S. Tax Recovery is an IRS Certified Acceptance Agent — we handle your ITIN, your return, and your complete treaty claim from start to finish.
Disclaimer: This article is for general informational purposes only and does not constitute tax, legal, or financial advice. Tax rules change; consult a qualified tax professional regarding your specific situation. U.S. Tax Recovery services are subject to individual eligibility.
