To complete and sign Form T183, fill in your name, address, and Social Insurance Number in the taxpayer section, enter the key totals from your finished return (including your refund or balance owing), confirm those figures match the return your preparer has in their software, and then sign Part F either by hand or with an accepted electronic signature. The form is prepared in duplicate: one copy for you, one for your preparer.1Canada Revenue Agency. Form T183 and Authorizing a Representative Nothing gets transmitted to the CRA until it is signed.
What You Are Authorizing
Form T183 is the authorization that lets a tax professional electronically file your individual income tax and benefit return with the Canada Revenue Agency through EFILE.2Canada Revenue Agency. T183 Information Return for Electronic Filing of an Individual’s Income Tax and Benefit Return Your signature confirms the figures on the return are yours and gives the preparer permission to transmit them. Without it, they cannot legally send the file.
The CRA publishes the form as a fillable PDF (Adobe Acrobat Reader 10 or higher) and as a print-and-fill version, and alternate formats such as braille, large print, and digital audio are available on request.2Canada Revenue Agency. T183 Information Return for Electronic Filing of an Individual’s Income Tax and Benefit Return Most commercial tax software generates the T183 automatically, pre-populated from your return.
Filling In Your Section
Your part of the form asks for your full legal name, current residential address, and Social Insurance Number. Take the SIN seriously. Failing to provide it when required can trigger a $100 penalty.3Canada Revenue Agency. Social Insurance Number (SIN) If you have applied for a SIN but do not yet have one, you can file using a temporary tax number or an individual tax number instead.
The form also captures key financial figures from your completed return, including total income and your refund or balance owing. Your refund amount comes from line 48400 of the return.4Canada Revenue Agency. Line 48400 – Refund These numbers must match your return exactly. Any mismatch between the T183 and the return data in the software will cause problems at transmission, so compare them line by line before you sign.
Filling In the Preparer’s Section
Your preparer completes their own portion with their EFILE number and credentials assigned by the CRA.1Canada Revenue Agency. Form T183 and Authorizing a Representative EFILE registration falls under subsection 150.1(2) of the Income Tax Act, and the CRA screens applicants for a history of tax fraud, unpaid taxes, and unfiled returns before granting access.5Canada Revenue Agency. Eligibility You do not need to verify any of this yourself, but the fields must be filled before the form is complete.
Signing Part F
Part F is the signature block, and your signature there is what allows the preparer to transmit the return.1Canada Revenue Agency. Form T183 and Authorizing a Representative You can sign in wet ink or electronically. The CRA accepts electronic signatures on the T183 under specific conditions.6Canada Revenue Agency. Using Electronic Signatures
If you sign electronically in person, the signature must be applied in the preparer’s presence using something like a stylus or your finger on a tablet. If you sign remotely, you have two acceptable routes. You can apply the signature to the form and send it back from the electronic address your preparer already has on file for you. Or you can sign through an access-controlled, secured website that the preparer has set up and given you access to.6Canada Revenue Agency. Using Electronic Signatures
The form also needs a date-and-time stamp in the format year/month/day and hour/minute/second. The CRA accepts this whether it is generated automatically by the software or entered by hand.6Canada Revenue Agency. Using Electronic Signatures
What Happens After You Sign
Your preparer does not mail the physical T183 to the CRA. They keep it on file and use it as the authorization to transmit your return data through EFILE. Under section 150.1(3) of the Income Tax Act, a return filed electronically is considered filed on the day the CRA acknowledges acceptance.7Canada Revenue Agency. File Returns
Once the CRA’s system processes the file and confirms it meets all specifications, it generates a confirmation number.7Canada Revenue Agency. File Returns That number is the proof the return was received and accepted. Ask your preparer for it and keep it with your records. Without it, the return is not considered filed. If the preparer has to correct data and retransmit, you only need to sign a new T183 when the correction changes the financial figures you originally authorized.
Keep Your Copy for Six Years
You and your preparer each keep a signed copy of the T183 for at least six years from the end of the tax year it covers.8Canada Revenue Agency. How Long Should You Keep Your Income Tax Records The retention rule comes from section 230 of the Income Tax Act. If a year’s return has not been filed yet, the clock does not start until it is. If you file a notice of objection or appeal, the retention period extends until that is fully resolved.9Department of Justice Canada. Income Tax Act – Section 230
A scanned version of the signed original is acceptable as long as it is stored in a readable electronic format, meets the minimum resolution, and does not alter the information on the signed page.1Canada Revenue Agency. Form T183 and Authorizing a Representative Saving your own PDF takes two minutes and settles any later question about whether you actually authorized the filing.
When the T183 Route Is Not Available
EFILE currently accepts initial individual returns for tax years 2018 through 2025, and amended returns through ReFILE for 2022 through 2025.10Canada Revenue Agency. EFILE News and Program Updates Some returns cannot be transmitted electronically even within those years, which means no T183 signing at all. The situations that most often disqualify a return include bankruptcy years, deceased-taxpayer returns for a year before the current tax year, most non-resident and deemed-resident filings, returns filed under the Voluntary Disclosures Program using Form RC199, and returns that include Schedule C (section 217), Form T1159 (section 216), or Form T1136 (Old Age Security Return of Income).7Canada Revenue Agency. File Returns If any of these apply, the return has to be paper-filed and Form T183 is not part of the process.