Using DocuSign for CRA Form RC366 (GST/HST Direct Deposit)

Can You Use DocuSign for CRA Form RC366?

Yes — you can use DocuSign to prepare and sign Form RC366 as part of your internal workflow, but DocuSign itself does not submit the form to the Canada Revenue Agency (CRA). The CRA's official channels for setting up or changing business direct deposit are: enrolling online through My Business Account (no paper form required), or mailing a signed Form RC366, Direct Deposit Request for Businesses, to your tax centre. A CRA guidance page has also referenced faxing the form to your tax centre. Because the CRA does not publish a blanket statement confirming acceptance of third-party e-signed RC366 forms sent by mail, the safest digital route is My Business Account — and if you plan to mail an electronically signed copy, confirm acceptance with the CRA first (business enquiries: 1-800-959-5525) or keep a wet-ink signature on the mailed original.

That nuance matters: Form RC366 controls where your GST/HST refunds land, and getting the signature and submission steps right avoids weeks of delay.

What Form RC366 Does (and Who Needs It)

Form RC366, officially titled Direct Deposit Request for Businesses, tells the CRA to deposit business refunds and rebates electronically into a Canadian bank account instead of mailing cheques. According to the CRA's instructions on the form, it covers refunds and rebates across your program accounts — which include GST/HST (RT), payroll deductions (RP), corporation income tax (RC), and excise-related accounts — tied to your nine-digit business number (BN).

You typically need RC366 when you are expecting a GST/HST refund and want it deposited directly, when your business banking details have changed, or when you are a new registrant who has not enrolled online.

Two points from the CRA's form instructions are worth noting. The bank account must be in the business's name and hold Canadian funds at a Canadian financial institution. And until the CRA processes your request, it keeps issuing cheques — if a deposit fails, it mails a cheque to the address on file. For many businesses, the fastest path is skipping the paper form entirely: the CRA lets business owners manage direct deposit directly in My Business Account, the channel it highlights in its guidance for GST/HST registrants.

What the CRA Requires on Form RC366

The form is short, but three sections carry compliance weight:

• Part A – Business information. The business name must exactly match what the CRA has on file, plus your nine-digit BN. If you do not have a BN yet, the form's instructions say to attach it to your refund or rebate application.
• Part B – Direct deposit routing information. You choose between depositing all amounts from all program accounts into one bank account, or routing specific program accounts to specific accounts. You provide the five-digit branch (transit) number, three-digit institution number, and account number (up to 12 digits), or attach a blank cheque marked VOID. If you are changing existing direct deposit details, you must also enter the old banking information exactly as the CRA has it on record.
• Part C – Certification. You must sign and date the form. Two rules stand out: the CRA must receive the form within six months of the date it was signed, or it will not be processed; and the form must only be signed by an individual with proper authority for the business — such as an owner, partner, or officer.

These details come from the CRA's published form and registrant guidance. If your situation is unusual — multiple branch accounts, a recent legal name change, a representative signing — confirm the requirements with the CRA before mailing anything.

Where DocuSign Fits — and Where It Stops

DocuSign is genuinely useful in the RC366 workflow, just not at the final submission step. Here is the realistic breakdown:

Canada's legal framework is friendly to electronic signatures in general. Federal law (PIPEDA, Part 2) and provincial electronic commerce statutes recognize e-signatures for most commercial purposes — our guide on whether e-signatures are legal walks through that framework, and for private contracts the answer to whether DocuSign is legally binding is generally yes.

Government forms are a different question. Tax authorities set their own acceptance rules: the IRS publishes specific e-signature policies, and as our analysis of HMRC's rules on accepting DocuSign shows, each agency draws the line differently. For RC366, the CRA has not explicitly confirmed that it accepts third-party electronically signed copies by mail. The practical takeaway: use DocuSign to move the signature through your organization, then file through a channel the CRA documents — ideally My Business Account, where no paper signature is needed. When in doubt, call the CRA business line first. We applied the same channel-first logic in our walkthrough of using DocuSign with IRCC's IMM 5476 representative form.

RC366 Completion and Submission Checklist

Use this checklist before anything leaves your desk:

1. Confirm the business name and nine-digit BN match CRA records exactly (Part A).
2. Decide the routing: one account for all program refunds, or specific accounts per program account (Part B).
3. Gather the five-digit branch number, three-digit institution number, and account number — or a VOID cheque from the business account.
4. If changing existing details, enter the old banking information exactly as the CRA has it.
5. Confirm the signer has proper authority (owner, partner, officer, or otherwise authorized individual).
6. Sign and date Part C; calendar the six-month receipt deadline.
7. Choose the channel: enrol in My Business Account (fastest, no form), or mail the signed form to your tax centre — confirm current mailing addresses and e-signature acceptance at canada.ca/cra-direct-deposit or 1-800-959-5525.
8. Keep the completed form, the DocuSign certificate of completion (if used), and proof of mailing.
9. Watch for continued cheques until the change is processed, then verify the setup in My Business Account.

DocuSign vs Alternatives for CRA Form Workflows

If your team signs CRA forms and other financial documents regularly, the tool question is really about cost structure and fit. DocuSign is the most recognized option and uses a per-seat, envelope-based pricing model — every team member who sends documents typically needs a paid seat, and plans include envelope allowances. Our breakdown of the cost of DocuSign covers how that model behaves as teams grow, and our broader roundup of DocuSign alternatives maps the landscape.

For a periodic, low-volume task like RC366, the differences that matter:

• DocuSign. Deepest feature set (templates, bulk send, integrations) and strong audit trails; per-seat pricing means occasional signers still occupy paid seats.
• Dropbox Sign (formerly HelloSign). Simpler interface aimed at small teams; per-user pricing on paid tiers with a limited free option for very light use.
• Nota Sign. FaDaDa's global e-signature platform, with no per-seat fees — a structure that suits small finance teams where several people may need to send or sign occasionally — plus tailored plans for mid-market and enterprise buyers.

For most Canadian SMBs, any of these handles the signing side of RC366 equally well; the decision turns on how much else you sign, how many people need access, and how the pricing model scales with occasional users.

Handling CRA Forms Digitally: Nota Sign

Nota Sign is FaDaDa's global e-signature platform. FaDaDa is IDC-ranked #1 in China's e-signature software market for consecutive years, with legal coverage across 100+ countries and regions and deep APAC compliance capabilities — iAM Smart, Singpass, SES/AES/QES signature levels, and regional data centers. For small businesses handling government forms and client paperwork, Nota Sign's no-per-seat-fee model keeps costs predictable when signing volume is uneven; mid-market and enterprise teams can get tailored plans.

If you are digitizing document signing across your finance operations — CRA forms included — talk to the Nota Sign team about a plan that fits.