Where to mail your tax return: Winnipeg Tax Centre

Mail your paper T1 income tax return to the Winnipeg Tax Centre, Post Office Box 14001, Station Main, Winnipeg MB R3C 3M3 if you live in Alberta, British Columbia, Manitoba, Saskatchewan, the Northwest Territories, or Yukon — or in the Ontario cities of Hamilton, Kitchener, Waterloo, London, Thunder Bay, or Windsor. Other CRA correspondence goes to a different PO box, so check the cards below before you seal the envelope.

T1 income tax returns

Winnipeg Tax Centre
Post Office Box 14001, Station Main
Winnipeg MB  R3C 3M3

Residents of AB, BC, MB, SK, NT and YT, plus the Ontario cities of Hamilton, Kitchener, Waterloo, London, Thunder Bay, and Windsor

Other CRA correspondence

Winnipeg Tax Centre
PO Box 14000, Station Main
Winnipeg MB  R3C 3M2

Letters, documents, and replies to the CRA that are not a T1 return (unless your CRA letter gives a different reply address)

Mail it without printing anything

Upload your document — we print it, seal it, and deposit it with Canada Post within 24 hours on business days. $6 flat, no account needed, and you get a Confirmation of Mailing email for your records.

Mail my tax return — $6

Key facts

  • The CRA considers your return filed on time if it is received or postmarked on or before the due date — usually April 30, or June 15 if you or your spouse are self-employed (any balance owing is still due April 30).
  • Returns go to PO Box 14001 (postal code R3C 3M3); other correspondence goes to PO Box 14000 (R3C 3M2). Mixing the two boxes up is the most common Winnipeg mistake.
  • Six Ontario cities — Hamilton, Kitchener, Waterloo, London, Thunder Bay, and Windsor — file in Winnipeg, not Sudbury.
  • Sign your return before mailing it; an unsigned paper return is not considered filed.
  • PostPal deposits your letter with Canada Post the next business day — order early for deadline filings.

How to mail it, step by step

  1. 1

    Confirm Winnipeg is your tax centre

    Winnipeg serves AB, BC, MB, SK, NT, YT, and the Ontario cities of Hamilton, Kitchener, Waterloo, London, Thunder Bay, and Windsor. If you live elsewhere in Ontario, in Atlantic Canada, or in Quebec, use the Sudbury or Jonquière tax centre instead.

  2. 2

    Assemble and sign your return

    Include your T1 jacket, all schedules, and any slips or receipts the guide tells you to attach. Sign and date page 8 of the T1 — unsigned returns get sent back.

  3. 3

    Address the envelope to PO Box 14001

    Use "Winnipeg Tax Centre, Post Office Box 14001, Station Main, Winnipeg MB R3C 3M3" for returns. Only use PO Box 14000 for non-return correspondence.

  4. 4

    Mail it before the deadline

    A postmark on or before the due date counts as on time. Upload your return to PostPal and we print, envelope, and hand it to Canada Post within 24 hours — $6 flat, no printer needed.

Common questions

Where do I mail my tax return if I live in Alberta or BC?

Mail it to the Winnipeg Tax Centre, Post Office Box 14001, Station Main, Winnipeg MB R3C 3M3. The Winnipeg Tax Centre processes paper T1 returns for Alberta, British Columbia, Manitoba, Saskatchewan, the Northwest Territories, and Yukon.

Is my return on time if it is postmarked by April 30?

Yes. The CRA treats a return as filed on time if it is received or postmarked on or before the due date. Keep proof of mailing for deadline filings — PostPal emails you a dated confirmation when your letter is handed to Canada Post.

What is the difference between PO Box 14001 and PO Box 14000?

PO Box 14001 (Winnipeg MB R3C 3M3) is exclusively for T1 income tax returns. PO Box 14000 (R3C 3M2) handles other correspondence — replies to CRA letters, documents, and forms. Sending a return to the wrong box can slow processing.

I live in Ontario — do I mail Winnipeg or Sudbury?

It depends on your city. Hamilton, Kitchener, Waterloo, London, Thunder Bay, and Windsor file with the Winnipeg Tax Centre. Toronto, Ottawa, Barrie, Kingston, and the rest of Ontario file with the Sudbury Tax Centre.

Can I mail my T1 instead of using NETFILE?

Yes. Paper filing is always allowed for T1 returns. Mailed returns take longer to assess than NETFILE, so file early if you are expecting a refund. If you cannot print at home, PostPal prints and mails your return for $6.

Do I need to include my T4 and other slips with a paper return?

Yes — when you paper-file, attach the slips and receipts that the T1 guide asks for (NETFILE users only keep them on hand). Keep copies of everything you mail in case the CRA asks again.

Related mailing addresses

Sources

Addresses verified June 2026 against official sources. Always confirm on the official site before time-sensitive filings.