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If you’re searching for TurboTax 2021 Canada, you probably need to file or fix a 2021 return now. Good news: the CRA says you can still send an initial 2021 return electronically with NETFILE, until January 29, 2027. Whether TurboTax or any other program still sells its 2021 version is something we couldn’t confirm, so check with the maker before you pay a few bucks for anything.
Can you still file a 2021 return online?
Yes, for a first return. The CRA’s NETFILE page lists 2018 through 2025 as years you can file electronically as an initial return. Amending is narrower. The CRA’s ReFILE service, which preparers use for changes, covers 2022 to 2025, so a 2021 correction isn’t on that list.
| What you want to do | Electronic route (per the CRA) |
|---|---|
| File a first 2021 return yourself | NETFILE with certified software |
| Have a preparer file it | EFILE, with your signed Form T183 |
| Amend a 2021 return electronically | Not listed for ReFILE (2022 to 2025 only) |
| Anything else | Check the CRA’s page, or use paper by mail |
Two practical points. You need a NETFILE access code, which the CRA now shows in your CRA account. And you need software built for 2021, because a program made for the 2025 return can’t take a 2021 return on its forms and with its rates.
Not sure which products still cover 2021? The CRA keeps a page of certified tax software for NETFILE, and it shows which tax years each product is certified for. Start there instead of a search engine ad.
What does software like TurboTax do for an old year?
Any certified program, TurboTax being one example among several, works the same way. It asks questions, fills in the forms and calculates the tax using that year’s rules. The value is in the calculation, because the rates, brackets and credit amounts for 2021 are not the ones in use now.
That’s also why our calculators won’t reproduce a 2021 answer. They use 2026 rates. They’re fine for seeing how your situation looks today, and no good for checking a 2021 total. If your software gives a number, trust the software for 2021 and use us for today’s planning.
Our income tax calculator shows a 2026 picture. An Ontario worker on $52,000 comes to $6,625.43 of tax, for example. The 2021 figure would be different, and we haven’t calculated it.
What should you gather for a 2021 return?
Slips first. T4s, T5s, T4As and any receipts for claims. Employers and banks may not hold them forever, and we didn’t confirm how long the CRA keeps copies in your account, so look there early.
Then your old paperwork. A 2021 assessment, if you ever received one, tells you things like carried forward amounts. No assessment? Then you may be starting from nothing, and that’s fine. Plenty of people do.
Picture Dana in Winnipeg, who stopped working in mid-2021, never filed, and found a shoebox of slips while cleaning out a closet. She doesn’t need the whole shoebox. She needs the T4, the T4A for any benefits, and a short list of anything she paid for that could be claimed. Everything else can wait.
One more thing to keep in mind: a missing return can hold up benefits that depend on it. We didn’t check the details for 2021, so read the CRA’s page on your benefits before you assume either way.
Is it worth filing an old return at all?
Usually yes.
You can’t get a refund or a benefit you never claimed. And if you owe, silence doesn’t make the balance go away. The CRA mentions interest and penalties for late filing on its due dates page, though we didn’t find the amounts there and we won’t guess them.
Take a sense of scale from our tax refund calculator. A single Ontario employee with $52,000 of pay and $7,000 withheld gets about $374.57 back at current rates. Older years will differ, but the method holds: tax owed minus tax paid. Withheld $7,000 and owed $6,625.43? The difference is the $374.57.
The tax credits calculator is federal only and uses current amounts, so treat it as a prompt for what to look for, not as a 2021 figure. For a business year, see how self-employed tax is built up today, and read our guide to filing income tax online for the steps.
What goes wrong most often with a late return?
Using the wrong year’s software is the big one. Check the year on the box or the login screen before you type a single number. Next is losing the NETFILE access code, which sits in your CRA account, so sign in first and not at 11 p.m. on the last night. And filing only part of the picture: if you had two jobs in 2021, you need both T4s.
Keep the confirmation number the program gives you after sending. It’s your proof the return went in.
The sources behind this page
Service details and years come from the Canada Revenue Agency‘s NETFILE and EFILE pages, read on September 30, 2026. The tax figures are from our own calculators at 2026 federal and Ontario rates. We couldn’t confirm anything about a named product’s versions, prices or features. This site has no link with the CRA or with Intuit.
Frequently asked questions
Can I still file a 2021 return electronically?
The CRA lists 2021 among the years NETFILE accepts for an initial return, with services open until January 29, 2027.
Does TurboTax still offer a 2021 version?
We couldn't confirm that. Ask the software maker or check its own site before you buy.
Can I amend a 2021 return with ReFILE?
The CRA lists ReFILE for 2022 to 2025 only, so 2021 isn't covered there.
Will your calculators give my 2021 tax?
No. They use 2026 rates, so they can't reproduce a 2021 result.
Do I need a NETFILE access code?
Yes, for NETFILE. The CRA shows it in your CRA account under your tax returns.
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