AccountantPortal

E-signature

T183 electronic signature, built into your document portal

You can’t e-file a return until the client has signed the T183. AccountantPortal gets it signed electronically, along with Quebec’s TP-1000.TE-V and your engagement letter, in the same place the client sent their slips.

What the T183 is, and why it holds up filing

Form T183, Information Return for Electronic Filing of an Individual’s Income Tax and Benefit Return, is the client’s authorization for you to EFILE their return. The CRA requires it to be signed before the return is transmitted and kept for at least six years after filing, in case the CRA asks for it. For Quebec residents, Revenu Québec’s form TP-1000.TE-V plays the same role for the provincial return.

The CRA accepts an electronic signature on the T183, and Revenu Québec states on the form’s own page that the TP-1000.TE-V can be signed electronically. The CRA’s conditions are practical ones: you have verified the client’s identity, the form reaches them at the electronic address they gave you or through a secured, access-controlled location, the signature carries a date and time, and you keep the certificate of completion with the signed form.

How signing works in AccountantPortal

  1. You upload the T183 (or any PDF), place the signature and date fields, and choose the signers: both spouses, in order if you like.
  2. Each signer gets an email with their own link.
  3. They confirm a one-time code sent to their email address.
  4. They consent to sign electronically and review the document.
  5. They draw or type their signature, on a phone or a computer.
  6. When everyone has signed, you get a sealed PDF with a certificate of completion and a SHA-256 fingerprint.

What you keep on file

  • The signed PDF, sealed so any change is detectable
  • A certificate of completion: who signed, when, the email address that received the code and the consent given
  • An audit trail that can’t be edited or deleted
  • A SHA-256 fingerprint anyone can check on the public verification page

Keep the signed T183 for at least six years after the return was filed, as the CRA requires, and check both agencies’ current guidance each season: the sources below are the pages to re-read.

Included, not an add-on

E-signature comes with every plan: 30 envelopes a month on Studio, 40 per user on Team, no limit on Unlimited, and more at $5 per 25. No separate e-signature subscription, no second tool for clients to learn.

Sources

Official pages, last checked on November 11, 2026. Rules change: re-read them before each tax season.

Free checklist

The T1 document checklist, ready to send

T4, RL-1, T5 and RL-3, RRSP receipts, medical, childcare, donations, RL-31 for Quebec renters: the slips and receipts personal returns need, with a plain-language hint for each one. It comes loaded in your account as a checklist template in English and French, alongside templates for self-employed, rental, corporate year-end and monthly bookkeeping.

Get the free checklist Comes with your free trial. No card needed.

Frequently asked questions

Does the CRA accept an electronic signature on the T183?

Yes. The CRA lists the T183 among the forms it accepts an electronic signature on, provided you have verified the client’s identity, the signature is date- and time-stamped, and you keep the certificate of completion. It remains the client’s choice to sign on paper instead.

Can both spouses sign the same form?

Yes. Add several signers to one envelope, and choose whether they sign in order.

What about the Quebec TP-1000.TE-V?

It works the same way: upload the form, place the fields, send it. Clients can sign in French or English.

Do clients need an account to sign?

No. They use the link in their email and confirm a one-time code.

Try it on your next tax season.

Set up your checklists, send one to a real client and watch the reminders do the work. If it isn’t for you, you’ve lost nothing.

Start your free trial See pricing

14 days free · No credit card · Cancel anytime