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Home > Guides > Faxing documents to the CRA
Yes, but only to the right program: the CRA publishes separate fax numbers for specific programs, and there is no single CRA fax line for everything. Programs that accept faxes include service complaints, charity objections and appeals, the Voluntary Disclosures Program, CPP/EI appeals, and the National Leads Centre. Most individual tax matters go faster online. This is general information, not tax advice.
The CRA routes paperwork to dozens of specialized processing centers, and each program publishes the fax number printed on its own forms and instruction pages. Faxing to the wrong program's number is not a harmless detour: the National Leads Centre, which handles suspected tax-cheating tips, explicitly warns that information sent to its fax line will not be redirected to other CRA programs. So the first step is always the same: find the fax number on the instructions for the specific form or program you are dealing with, not on a general CRA contact page.
| CRA program | Fax acceptance | Note |
|---|---|---|
| Service complaints (form RC193) | Yes | The service-complaints page lists dedicated fax numbers; email is not accepted |
| Charity objections and appeals | Yes | Registered charities can fax objections; the CRA recommends fax or online over mail |
| Voluntary Disclosures Program | Yes | Fax is one of three accepted submission methods; use only one method |
| CPP/EI assessment appeals | Yes | Fax to the appeals division with your case number on the documents |
| National Leads Centre (tax-cheating tips) | Yes | Tips and supporting documents only; nothing else gets redirected |
| Ordinary personal tax returns | No | File through NETFILE software or mail; fax is not a filing method |
The CRA's preferred route for individuals is My Account's "Submit documents" service, which accepts scans and is usually faster than any paper channel. Fax makes sense in two situations: the program you are dealing with publishes a fax number and no online upload path, or you need the timestamped confirmation page a fax produces as your proof of timely submission. That confirmation page matters for appeals and objections with hard deadlines. One practical tip: if the CRA gives you a reference or case number, put it on the top-right corner of every page you fax, since that is how its systems match your documents to your file.
Do not fax documents the program's instructions do not ask for, and do not fax originals unless the instructions specifically require them: the CRA generally wants copies, and faxed pages are copies by definition. Never send the same submission twice through two channels: the Voluntary Disclosures Program explicitly says to use one submission method only, and duplicate submissions slow processing. And do not fax to report suspected tax cheating anywhere except the National Leads Centre's line, since that program will not forward misdirected mail.
LetterAgent sends faxes to US and Canadian fax numbers through your AI assistant: you get a per-fax quote with the page count verified, approve the exact total, and pay once through Stripe. Faxing is currently in testing, and Canada is fully covered, so a CRA program fax is within scope. One caution: CRA fax numbers and forms change, so confirm the fax number on the current canada.ca page for your program before sending, and keep the confirmation page for your records. For most individual matters, My Account's document upload remains the simplest route.
Ready to fax it? Fax with LetterAgent: describe it to your AI assistant, approve the exact quoted price, and it is sent.
LetterAgent is a working name. Prices include print, postage, and our service fee. US prices in USD, Canadian prices in CAD (Canadian prices exclude applicable sales tax, added at checkout). Currently in private testing.
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